Спутник ФКИ. Deep Impact/EPOXI. [Редактировать]

Дип Импакт — космический аппарат НАСА, предназначенный для изучения кометы Темпеля 1. Аппарат впервые в истории сбросил на комету зонд, который протаранил её поверхность (также сфотографировав её с близкого расстояния). Курировал проект астрофизик Майкл Ахерн. Название миссии схоже с названием кинофильма 1998 года Deep Impact, в котором комета поражает Землю. Учёные из миссии и создатели фильма разработали имя независимо друг от друга, примерно в одно и то же время.
Космический аппарат состоял из двух основных секций: отстреливаемого ударного устройства «Smart Impactor» («импактор»), который врезался в комету, и «Flyby» («Облёт»), который снимал комету с безопасного расстояния во время удара.
Секция «Облёт» размером около 3,2 метров в длину, 1,7 метров в ширину и 2,3 метров в высоту состояла из корпуса, двигательной установки, двух солнечных батарей, противопыльного экрана, пары телескопов оптической навигации и нескольких научных инструментов, в том числе фотокамеры высокого (HRI) и среднего (MRI) разрешения. HRI могла делать снимки не только в видимом, но и в инфракрасном свете (в её состав входил инфракрасный спектрометр «Spectral Imaging Module» или SIM).
370-килограмовый «импактор» (49 % меди по массе), также называемый «Cratering Mass», включал в себя ядро (payload) из 100 % меди, испарение которой не помешало бы измерению состава ядра кометы. Импактор был оборудован камерой, аналогичной MRI. При приближении к комете она позволила сделать снимки ядра кометы с разрешением 0.2 м (7.9 дюймов) на пиксель.
Аппарат был запущен 12 января 2005 года.
4 июля 2005 г. импактор столкнулся с кометой, вызвав выброс кометного вещества массой около 10 тыс. тонн; энергия столкновения была приблизительно эквивалентна взрыву пяти тонн динамита. Из-за выброса данного газопылевого облака яркость кометы кратковременно увеличилась в 6 раз.
При подлёте импактора к поверхности кометы камера сфотографировала её с высоким разрешением в режиме реального времени. Последний снимок был сделан за 3,7 секунды перед ударом, после чего импактор вместе с камерой были разрушены.
Анализ состава выброшенного вещества показал, что комета состоит из водяного льда, летучих фракций, карбонатов, полиядерных ароматических углеводородов, сульфидов и других компонентов. Химический состав оказался не соответствующим ранее принятым моделям. Некоторые из обнаруженных минералов образуются при температурах 1100—1200 К. В то же время, в составе были обнаружены летучие газы, которые стабильны лишь при температуре ниже 100 К. Это говорит о том, что комета содержит в себе смеси материалов, которые образовывались в разных условиях и, возможно, в разное время и в разных местах.
Последующие наблюдения обнаружили ударный кратер, образованный зондом: диаметр кратера составляет около 100 м при глубине около 30 м.
После пролёта кометы Темпеля орбитальная часть аппарата оставалась в работоспособном состоянии на орбите вокруг Солнца. НАСА приняло решение направить его к комете 103P/Хартли, пролёт мимо которой состоялся 4 ноября 2010 года.
Аппарат в самой близкой точке сблизился с кометой на расстояние около 700 километров. Ядро кометы 103P/Хартли самое маленькое из всех снятых в настоящее время (2010 год): в длину оно составляет всего около 2 километров.
При сближении с кометой 103P/Хартли бортовой аппаратуре удалось обнаружить необычные струи газа и пыли, срывающиеся с поверхности концов кометы. Некоторые частицы в составе струй достигали размеров баскетбольного мяча. По инфракрасному спектру ученые определили, что струя состоит из сублимирующего углекислого газа, подхватывающего и уносящего снег и льдинки.
Последний успешный сеанс связи с КА состоялся 8 августа 2013 года, после чего связь с ним была утеряна. 20 сентября 2013 года NASA объявила о завершении миссии. По предварительным оценкам, обрыв связи возник из-за потери ориентации аппарата в пространстве, вызванной сбоем в работе компьютерной программы зонда.
По одному из предположений, ошибка связана с переполнением счётчика времени в модуле защиты от сбоев. Если в нем для учета времени использовалось количество десятых секунды, прошедших с 1 января 2000 года, то 11 августа 2013 года счетчик достиг величины 2^32 и переполнился (сходная проблема ожидалась в 2000 году для обычных ПК). После переполнения счётчика модуль начал вызывать перезагрузки бортового компьютера.

Дополнительные наименования

#НаименованияПоиск в новостяхПоиск в документах
1EPOXIНайтиНайти
2Deep ImpactНайтиНайти
328517НайтиНайти

Дополнительная классификация

#Наименования
1Тип оператора(владельца) - государственный
2Страна оператор(владелец) - США
3Страна производитель - США

Технические характеристики

#ХарактеристикаЗначение
1Масса, кг650
2Мощность, Вт620.0

Характеристики орбиты

#ХарактеристикаЗначение
1САСContact with probe lost, Mission canceled.

Пусковые характеристики

#ХарактеристикаЗначение
1Код NSSDC2005-001A

Экономические характеристики

#ХарактеристикаДата измеренияЗначение
1Оператор NASA Jet Propulsion Laboratory

Информация об удачном запуске

#ХарактеристикаЗначение
1Дата пуска2005-01-12 at 18:47:08 UTC
2Полезная нагрузка 1xDeep Impact/EPOXI
3Ракета-носитель 1xДельта 2

Найдено 261 документов по запросу «Deep Impact/EPOXI». [Перейти к поиску]


Дата загрузки: 2017-10-24
Скачать документ
Скачать текст
0.12/5
... Space Telescope: Science Return and Impact 103 – AGN: Jets and Feedback.... Wilson. He realized the social impact that viewing the heavens could... Space Telescope: Science Return and Impact Plenary Session – Grand Ballroom (Long... Space Telescope: Science Return and Impact B.T. Soifer, Spitzer Science Center, Pasadena... striking example being its major impact on exoplanet studies, itself an... present an investigation into the impact of feedback from outflows of..., we briefly discuss the potential impact of planets in clusters on... this requirement, still, their exact impact is not yet understood. We... cluster outskirts. I briefly consider the impact of Galaxy clusters display an... magnetic field lines have a greater impact on jet production than the... of those studies show significant impact on participants. Participants ranged from... in planetariums. We studied the impact of formative assessment—as measured... Foundation. 141.09 – Enhancing the Impact of NASA Astrophysics Education and... also discussed. 141.1 – Enhancing the Impact of NASA Astrophysics Education and... progress. 141.11 – Enhancing the Impact of NASA Astrophysics Education and... During Roche Lobe Overflow Direct Impact Mass Transfer J.F. Sepinsky, University of... during Roche lobe overflow direct impact accretion mass transfer. In many... use Double White Dwarf direct impact accretion as a specific example of... of this experiment will directly impact our K. Law, Johns Hopkins University... is critical to understand the impact of this environment on galaxy... may impact derived relations between M*, 12 + log(O/H), and SFR. 147.21 – A Deep... surface gravity, transit duration (T14), impact parameter (b) and their uncertainties. We... cluster that has had a profound impact on our understanding of stellar... a Curiosity EDL event created a clear impact in Northern New Jersey. I will..., have the greatest potential to impact the largest number of students...α absorption lines such as the impact parameter - equivalent width correlation, velocity.... Such detections will have large impact on several key questions such... extreme regimes; we explore the impact of episodic star formation histories... these galaxy properties at various impact parameters. We also show how... their mass and stellar distributions impact our understanding of galaxy evolution... Searcher) and has had a major impact on our understanding of planets... and Subsequent Evolution of Post-Impact Remnant Stars K. Pan, P.M. Ricker, University... test our understanding of the impact on these transitory features of... broader and will have a greater impact on discovery of both literatue... provides a summary of the basic impact indicators for a list of records... ‘Article Evolution’ but will also impact widely on third party services... quasar sightlines through M31, with impact parameters between 13 kpc and... spectra from the simulations at impact parameters ranging from ~0.1 Rvir to...’s other deep field surveys. It is our goal is to impact students... desired observing cadences, study the impact of changing support 'PI mode.... This leadership has enabled high-impact scientific results, as evidenced by..., Minneapolis, formation will not significantly impact the current stellar mass of..., University of few Gigayears. The impact of this star formation is... We systematically explore non-zero impact parameter collisions of white dwarfs... mass pairings, we use two impact parameters, b=1 (one white dwarf radius.... A merger-rich assembly history will impact the distribution of stellar and....01 – Comet Garradd Seen With Deep Impact M.F. A'Hearn, L.M. Feaga, University of Maryland... a series of observations using the Deep Impact Flyby Spacecraft as a remote observatory... Recent space missions (such as Deep Impact & EPOXI) have provided spectra from comets... those seen in Deep Impact observations of 9P/Tempel 1 and EPOXI observations of...-dimensional fluctuations. 323.05 – Baryon Impact on Weak Lensing Peaks and... l>1,000). We then study the impact of the halo concentration increase... low redshift ~L* galaxies out to impact parameters ~150 kpc using the... help to better gauge the impact of, e.g., the environmental pressure on... taken by the Deep Impact spacecraft as part of the EPOXI mission. Critically... from massive stars and its impact 337.01 – Computational Cosmology in... their ionic constituents with the impact parameters of the galaxies in... GREAT3 challenge will test the impact on weak lensing measurements of... degree DES footprint, including the impact of bright stars. In addition... about light pollution and its impact, not only on astronomical facilities.... Such arrays will have a major impact on a diverse range of scientific... interstellar molecules would have a profound impact on our understanding of the... to both the scientific and impact hazard communities. The Moving Object... collider mass and interaction potential impact explicitly calculated rate coefficients and... inclusion of rotation has a substantial impact on the main-sequence lifetimes... field spectroscopy, we investigate the impact of feedback from Active Galactic...



Дата загрузки: 2017-10-09
Скачать документ
Скачать текст
0.03/5
... to the question of NEO impact mitigation. In a year of development... of the water at the impact site. In an advance in... to the question of NEO impact mitigation. >> In November 2010, it... of the water at the impact site. >> That same month, ISRO... 770 km above Earth. >> NASA's Deep Impact/EPOXI spacecraft flew past Earth. This... are likely to increase their impact in years to come, possibly... not expected to have an impact on Intelsat’s financial position or... space - 78 - regulations and their impact on the U.S. civil, commercial, and... is a plague that has an impact on pay-TV operators worldwide... piracy situation may have an impact on analogue cable TV operators... system in one market can impact markets around it. It can... University found an ancient meteor impact crater in a remote location of... the region. A date for the impact that caused the newly found... the centre would have a positive impact for the locals, especially in..., due to concerns about their impact on fishermen near the launch... its member states that could impact its work. There was even... in Romania with a minimum of impact for customers. This consolidation coincides... it will have a low environment impact. While the first Angara launch... availability of financing have on impact on satellite plans in a region... on-the-ground showed the impact of the earthquake in Haiti... the last two decades. One impact of this is a loss of... regulations have had a negative economic impact on US space industries. Nearly.... NASA officials are weighing the impact of appropriations legislation approved by... lander projects - doubling the potential impact of the $30 million Google... business, as well as the impact of domestic and foreign competition... SMART-1 mission ended with a controlled impact in the Lunar Lake of... and debris created by the impact in real time. Chang’e 1, the... to 50 km and a planned impact ended the mission on 10.... It also deployed the Moon Impact Probe to test technologies for... as well as of giant impact structures. It is scheduled for.../LCROSS impact experiment and lunar spectral data from three spacecraft, Chandrayaan-1, Deep Impact... from the LRO and LCROSS impact experiment as well as Earth..., new boulder tracks, recently-formed impact craters, and diminishing amounts of... extended mission to another target. Deep Impact, NASA’s Discovery-class mission, has... as well as from the Deep Impact spacecraft and ESA’s Rosetta spacecraft... strength. Spectra taken shortly after impact revealed emission lines of water... circular features thought to be impact craters. Small patches of water... EPOXI is a combination of proposals to use the re-tasked NASA Deep Impact... and Characterization) investigation and DIXI (Deep Impact eXtended Investigation of comets). The... with EPOXI, uses the re-tasked NASA Stardust spacecraft to visit Deep Impact... since Deep Impact’s visit in 2005 and may enable viewing of the impact crater left by Deep Impact’s projectile. - 180 - Rosetta... observation campaign that accompanied the Deep Impact event on July 2005, obtaining... Ceres, to search for possible impact features on its surface, the... - 181 - projectile released by the Deep Impact spacecraft and comet 9P/Tempel... around the world in the Deep Impact campaign, observing, with its infrared... surface, with only a few large impact craters detected. In addition to... lower ionosphere along with their impact on the region and coupling... on the region; understanding the impact of geomagnetic storms on the...; climatic impact of changes in trace constituents and solar input; impact of... atoms and molecules and 2) the impact ionization of neutral species by... of electron temperature, and the impact of precipitating electrons on the... to produce important results that impact the space science community. These.... This mission will have a huge impact on science, similar to that.... It also has a huge potential impact both on our economies and... or movement (e.g. selfsustained oscillations without impact of gravity), gene expression studies... future ISS studies is the impact of the retirement of the.... They also propose that multiple, impact-induced temperature anomalies could have... orbit planning led to a successful impact in the southern lunar crater... to provide further support to impact risk assessments of the space... the electric power infrastructure and impact numerous other space-based and... a more complete assessment of the impact of solar variability on the... the Panel in 2002. NASA’s Deep Impact/EPOXI mission (Category II) performed an... of the two telescopes on Deep Impact to search for Earth-sized... orbits, resulting in eventual lunar impact. These missions are: • JAXA’s SELenological... 14 November 2008, the Moon Impact Probe separated from the Chandrayaan... launching rocket’s upper stage to impact into the lunar surface near... a long-range traverse towards a large impact crater. Spirit, on the other... impacted by a projectile from the Deep Impact mission in July 2005. The... Experiment Dropping In Microgravity Environment Deep Impact Extended Investigation of comets Deutsches...



Дата загрузки: 2017-09-24
Скачать документ
Скачать текст
0.22/5
..., Entladungstiefe DSM Deep Space Maneuver DSN Deep Space Network DSV Deep Space Vehicle... jedoch ebenso die Herausforderungen von Deep Space Missionen mit sich bringt... zur Art der Beteiligung an Deep Space Missionen bezogen. Wesentlicher Bestandteil... auf einem NEO hat die Deep Impact Mission am 3. Juli 2003 auf... der Deep Impact Mission hat zuletzt im Jahr 2010 unter der Bezeichnung EPOXI... zurückgeführt und eine Impact-Mission durchgeführt. ROSETTA wird... sind dabei sehr genaue Frequenzgeneratoren. Für Deep-Space-Missionen werden daher standardm... Erdorbit und Zusammenbau des Transferkomplexes (Deep Space Vehicle – DSV). Phase 2 – Hinflug... )2 + 2µE � − � rLEO rSOI µE vk = � rLEO (3.7) (3.8) (3.9) Die Deep Space Maneuver (DSM) am Asteroiden... sind nötig, um das Raumfahrzeug für Deep-Space Missionen einsetzbar zu machen... Ida DAWN Deep Impact EPOXI Hayabusa (before launch: MUSES-C) STARDUST STARDUST-NExT Deep Space... flyby flyby lander orbit orbit impact flyby 5-Sep-2008 10-Jul... 4-Nov-2010 mission got named EPOXI orbit 12-Sep-2005 touch... by Radio wave Transmission Grain Impact Analyser and Dust Accumulator Rosetta... Surface electrical, acoustic and dust impact monitoring MUPUS Measurements of surface... Aeronautics and Space Administration (NASA), „Deep Impact Legacy Site,“ National Aeronautics and... Aeronautics and Space Administration (NASA), „EPOXI Encounter with Comet Hartley 2,“ National...]. Available: http://www.nasa.gov/epoxi. [Zugriff am 28 Oktober 2011...-337, Oktober 2006. [127] R. Marc, "Deep Space 1," National Aeronautics and Space...



Дата загрузки: 2017-03-09
Скачать документ
Скачать текст
Скачать перевод
Посмотреть билингву
0.05/5
... to the question of NEO impact mitigation. In a year of development... of the water at the impact site. In an advance in... to the question of NEO impact mitigation. >> In November 2010, it... of the water at the impact site. >> That same month, ISRO... 770 km above Earth. >> NASA's Deep Impact/EPOXI spacecraft flew past Earth. This... are likely to increase their impact in years to come, possibly... not expected to have an impact on Intelsat’s financial position or... of space regulations and their impact on the U.S. civil, commercial, and... is a plague that has an impact on pay-TV operators worldwide... piracy situation may have an impact on analogue cable TV operators... system in one market can impact markets around it. It can... University found an ancient meteor impact crater in a remote location of... the region. A date for the impact that caused the newly found... the centre would have a positive impact for the locals, especially in..., due to concerns about their impact on fishermen near the launch... its member states that could impact its work. There was even... in Romania with a minimum of impact for customers. This consolidation coincides... it will have a low environment impact. While the first Angara launch... availability of financing have on impact on satellite plans in a region... on-the-ground showed the impact of the earthquake in Haiti... the last two decades. One impact of this is a loss of... regulations have had a negative economic impact on US space industries. Nearly.... NASA officials are weighing the impact of appropriations legislation approved by... lander projects - doubling the potential impact of the $30 million Google... business, as well as the impact of domestic and foreign competition... SMART-1 mission ended with a controlled impact in the Lunar Lake of... and debris created by the impact in real time. Chang’e 1, the... to 50 km and a planned impact ended the mission on 10.... It also deployed the Moon Impact Probe to test technologies for... as well as of giant impact structures. It is scheduled for.../LCROSS impact experiment and lunar spectral data from three spacecraft, Chandrayaan-1, Deep Impact... from the LRO and LCROSS impact experiment as well as Earth..., new boulder tracks, recently-formed impact craters, and diminishing amounts of... extended mission to another target. Deep Impact, NASA’s Discovery-class mission, has... as well as from the Deep Impact spacecraft and ESA’s Rosetta spacecraft... strength. Spectra taken shortly after impact revealed emission lines of water... circular features thought to be impact craters. Small patches of water... EPOXI is a combination of proposals to use the re-tasked NASA Deep Impact... and Characterization) investigation and DIXI (Deep Impact eXtended Investigation of comets). The... with EPOXI, uses the re-tasked NASA Stardust spacecraft to visit Deep Impact... since Deep Impact’s visit in 2005 and may enable viewing of the impact crater left by Deep Impact’s projectile. - 180 - Rosetta... observation campaign that accompanied the Deep Impact event on July 2005, obtaining... Ceres, to search for possible impact features on its surface, the... - 181 - projectile released by the Deep Impact spacecraft and comet 9P/Tempel... around the world in the Deep Impact campaign, observing, with its infrared... surface, with only a few large impact craters detected. In addition to... lower ionosphere along with their impact on the region and coupling... on the region; understanding the impact of geomagnetic storms on the...; climatic impact of changes in trace constituents and solar input; impact of... atoms and molecules and 2) the impact ionization of neutral species by... of electron temperature, and the impact of precipitating electrons on the... to produce important results that impact the space science community. These.... This mission will have a huge impact on science, similar to that.... It also has a huge potential impact both on our economies and... or movement (e.g. selfsustained oscillations without impact of gravity), gene expression studies... future ISS studies is the impact of the retirement of the.... They also propose that multiple, impact-induced temperature anomalies could have... orbit planning led to a successful impact in the southern lunar crater... to provide further support to impact risk assessments of the space... the electric power infrastructure and impact numerous other space-based and... a more complete assessment of the impact of solar variability on the... the Panel in 2002. NASA’s Deep Impact/EPOXI mission (Category II) performed an... of the two telescopes on Deep Impact to search for Earth-sized... orbits, resulting in eventual lunar impact. These missions are: • JAXA’s SELenological... 14 November 2008, the Moon Impact Probe separated from the Chandrayaan... launching rocket’s upper stage to impact into the lunar surface near... a long-range traverse towards a large impact crater. Spirit, on the other... impacted by a projectile from the Deep Impact mission in July 2005. The... Experiment Dropping In Microgravity Environment Deep Impact Extended Investigation of comets Deutsches...



Дата загрузки: 2017-01-16
Скачать документ
Скачать текст
0.16/5
Autonomous Navigation for Deep Space Missions Downloaded by 94...., USA Autonomous navigation (AutoNav) for deep space missions is a unique capability... the challenging aspects of flying deep space missions is navigation, that...). For the vast majority of deep space missions, this process is... to impact a small body (as in the case of the Deep Impact mission... it was used on the Deep Space 1 (DS1) mission will be... later. For the flyby or impact scenario (which forms the bulk... for the DS1, STARDUST, and Deep Impact (DI) missions will be provided... some accuracy. Analogous to the deep space cruise scenario described above... missile guidance, but for most deep space applications, this speed is... critical (such as for an impact), then just the two parameters... five missions: Deep Space 1, STARDUST, Deep Impact, EPOXI (the follow-on mission to Deep Impact), and.../Annefrank STARDUST/Wild 2 DI/Tempel 1 EPOXI/Hartley 2 STARDUST NExT/Tempel 1 Flyby... 150 72 62 86 82 D. Deep Space 1 DS1 was the first...; among them were the first deep space ion propulsion system, a low... | DOI: 10.2514/6.2012-1267135 F. Deep Impact DI, the eighth mission in... challenging use of AutoNav Figure 3. Impact points after each maneuver on... perform a Impactor spacecraft9. high speed impact of a comet with one spacecraft..., 2005 for a 6 month cruise to impact comet Tempel 1 on July 4, 2005... the dual spacecraft for the impact. Twenty-four hours before encounter... the flash resulting from the impact were sent to the ground... the hours prior to the impact event and had dual roles... comet nucleus, and bias the impact site towards the side where...: (1) “scene analysis” – selecting the actual impact site to be on a lit... of the nucleus, (2) time-of-impact and time-of-imaging updates... based on the Impactor’s expected impact time, and (3) autonomous coma cutoff... was critical to the Figure 4. Impact as viewed from DI Flyby... dust impacts through closest approach. G. EPOXI EPOXI was the follow-on mission... assumed that running AutoNav for EPOXI would be relatively simple since... 2 close approach image taken by EPOXI. Left panel shows the nucleus... at the same time as EPOXI. NExT’s purpose was to revisit... obscured a clear view of the impact site from the DI Flyby... 2 for Tempel 1. Because, unlike on EPOXI, the system was used in... resolution stereo images of the impact site. The former was a problem... asteroid well before its Earth impact. The DI mission demonstrated that... Determination Performance Evaluation of the Deep Space 1 Autonomous Navigation System”, AAS..., August 1997. 9 Kubitschek, D. G., et al, “Deep Impact Autonomous Navigation: The Trials of... Bhaskaran, S., Riedel, J. E., Synnott, S. P., Wang, T. C., “The Deep Space 1 Autonomous Navigation System: A Post..., N., et al, “Autonomous Navigation for Deep Impact”, AAS 06-177, AAS/AIAA... Design and Performance for the EPOXI Hartley 2 Flyby, SpaceOps 2012 Conference... 2012. 14 a’Hearn, M. F., et al, “EPOXI at Comet Hartley 2”, Science, Vol... Riedel, J. E., et al, “Configuring the Deep Impact AutoNav System for Lunar, Comet...



Дата загрузки: 2017-01-16
Скачать документ
Скачать текст
0.17/5
Autonomous Navigation for Deep Space Missions Shyam Bhaskaran1 Jet ..., USA Autonomous navigation (AutoNav) for deep space missions is a unique capability... the challenging aspects of flying deep space missions is navigation, that...). For the vast majority of deep space missions, this process is... to impact a small body (as in the case of the Deep Impact mission... it was used on the Deep Space 1 (DS1) mission will be... later. For the flyby or impact scenario (which forms the bulk... for the DS1, STARDUST, and Deep Impact (DI) missions will be provided... some accuracy. Analogous to the deep space cruise scenario described above... missile guidance, but for most deep space applications, this speed is... critical (such as for an impact), then just the two parameters... five missions: Deep Space 1, STARDUST, Deep Impact, EPOXI (the follow-on mission to Deep Impact), and.../Annefrank STARDUST/Wild 2 DI/Tempel 1 EPOXI/Hartley 2 STARDUST NExT/Tempel 1 Flyby... 150 72 62 86 82 D. Deep Space 1 DS1 was the first...; among them were the first deep space ion propulsion system, a low... images surrounding closest approach. F. Deep Impact Figure 3. Impact points after each maneuver on... was to perform a high speed impact of a comet with one spacecraft..., 2005 for a 6 month cruise to impact comet Tempel 1 on July 4, 2005... the dual spacecraft for the impact. Twenty-four hours before encounter... the flash resulting from the impact were sent to the ground... the hours prior to the impact event and had dual roles... comet nucleus, and bias the impact site towards the side where...: (1) “scene analysis” – selecting the actual impact site to be on a lit... of the nucleus, (2) time-of-impact and time-of-imaging updates... based on the Impactor’s expected impact time, and (3) autonomous coma cutoff... the nucleus and not Figure 4. Impact as viewed from DI Flyby... dust impacts through closest approach. G. EPOXI EPOXI was the follow-on mission... assumed that running AutoNav for EPOXI would be relatively simple since... 2 close approach image taken by EPOXI. Left panel shows the nucleus... at the same time as EPOXI. NExT’s purpose was to revisit... obscured a clear view of the impact site from the DI Flyby... 2 for Tempel 1. Because, unlike on EPOXI, the system was used in... resolution stereo images of the impact site. The former was a problem... asteroid well before its Earth impact. The DI mission demonstrated that... Determination Performance Evaluation of the Deep Space 1 Autonomous Navigation System”, AAS..., August 1997. 9 Kubitschek, D. G., et al, “Deep Impact Autonomous Navigation: The Trials of... Bhaskaran, S., Riedel, J. E., Synnott, S. P., Wang, T. C., “The Deep Space 1 Autonomous Navigation System: A Post..., N., et al, “Autonomous Navigation for Deep Impact”, AAS 06-177, AAS/AIAA... Design and Performance for the EPOXI Hartley 2 Flyby, SpaceOps 2012 Conference... 2012. 14 a’Hearn, M. F., et al, “EPOXI at Comet Hartley 2”, Science, Vol... Riedel, J. E., et al, “Configuring the Deep Impact AutoNav System for Lunar, Comet...



Дата загрузки: 2017-03-10
Скачать документ
Скачать текст
0.07/5
....Баумана полетит в космос через год EPOXI совершил пролет близ Земли 27... будут исследовать комету Хартли-2 Зонд Deep Impact в воскресенье поздно вечером сблизился с Землей... он встретится 4 ноября. Межпланетная станция Deep Impact отправилась в космос еще в январе 2005..., получившего приставку Epoxi к названию (Extrasolar Planet Observation and Deep Impact Extended Investigation). "Вторая... зонд к Хартли-2. На пути к цели Deep Impact/Epoxi должен был совершить целую серию... пяти месяцев", - сказал руководитель проекта Epoxi Тим Ларсон (Tim Larson). Уже.... EPOXI совершил пролет близ Земли Американский межпланетный зонд EPOXI (ранее назывался Deep Impact) совершил... to the Near-Earth Object Impact Threat" («Рекомендации по организации международного...



Дата загрузки: 2016-11-23
Скачать документ
Скачать текст
0.04/5
... actual geologic fragments generated from impact comminution. 105.05 Investigation of... A Numerical Investigation into Low-Speed Impact Cratering Events 1 1 2 - Stephen Schwartz , D. C. Richardson... impact history, surviving near fatal collisions that left global scars. Its impact... small-scale variations exposed by impact gardening. Elemental abundances have been....04 Observing Campaign for Potential Deep Impact Flyby Target 163249 (2002 GT... Technology, Johnson Space Center. The Deep Impact spacecraft is currently on course... cases of high-precision computations (impact monitoring, detection of non-gravitational... accretionary stage. The impact melt generated after an impact is mixed with... conditions are determined by the impact parameters (velocity, radius, angle, ...). We... Asteroids: Diopside, Magnesite, and Fayalite Impact Studies 1 2 3 4 5 6 - Susan M. Lederer , E. A. Jensen , D. H. Wooden... impact experiments were conducted in the Johnson Space Center Experimental Impact Laboratory using the vertical gun. Impact speeds ranged... impact processing that has occurred on small bodies. At the Experimental Impact... impactor densities, temperature, and additional impact velocities. Results on diopside, fayalite... extending around the equatorial region, impact basins, enigmatic dark material, and... surface alteration features (1). Two large impact basins, Veneneia (400km) underlying the... their formation (1,3). Numerous unusual asymmetric impact craters and ejecta indicate the... preferential ejecta distribution suggests an impact on a slope. Color properties of... to large impact basins on midsize icy satellites of Saturn. Impact melt... difficult to determine. Post-Rheasilvia impact craters are relatively pristine but... impact craters, extensive ejecta blankets, giant troughs around the equator, impact basins... ~3.4-4.1Gyr. Intriguingly, the overall HED impact age distribution shares several common... low average impact velocity (~5km/s). We suggest that the HED impact ages... which will provide unprecedented observations. Impact probabilities :IP_y refers to the... region. 210.12ATLAS: Asteroid Terrestrial-impact Last Alert System 1 1 1 2 3 4 1 5 - Robert Jedicke... evolution of the impact probability for objects on an impact trajectory as a function of time before impact for different... more precise estimation of terrestrial impact fluxes of sporadic micrometeoroids on... Atmospheric Volatiles At Mars Via Impact 1 1 - David Brain , B. Jakosky 1 LASP / University... impact rate at different epochs as a function of impactor size. This impact... agencies. 215.03 AIDA: Asteroid Impact & Deflection Assessment 1 1 2 2 3 1 - Andrew F. Cheng , A. Rivkin..., some of which impact the Earth. The impact of an object as... an impact trajectory that robustly intersects with the secondary surface. On impact...-1900 Ǻ) emissions arising from photoelectron impact and photofragmentation of molecular nitrogen... as the impact risk is increasingly “retired.” 305.09 Impact Hazard Assessment... Earth impact on 2040-Feb-05.2 with probability 0.2%. The 2040 potential impact... still a chance for eliminating the impact hazard through observations rather than...-bearing magmas. Bright deposits within impact craters host fresh-appearing, rimless... of extensional deformation that accompanied impact crater and basin 150 modification... the launcher to create the impact. Impact velocities are controlled by initial...-velocity impacts into regolith, including impact velocity, impactor mass, target shape... results from one-g and microgravity impact experiments. 312 Titan Wednesday, 3:30... observed in situ from the Deep Impact spacecraft on UT 2010 November... Extrasolar Planet Observation and Deep Impact Extended Investigation (EPOXI) spacecraft revealed that its... Volatiles as Observed by the Deep Impact HRI-IR Spectrometer 1 1 1 1 1 2 - Lori M. Feaga... Maryland, JPL. In 2012, the Deep Impact (DI) spacecraft observed comet C/2009... and Analysis of the LCROSS Impact Plume 1 2 2 2 3 4 - Paul D. Strycker , N. J. Chanover , C. Miller... analysis. 412.04 Jovian Impact Modeling: Impact Angle Variation and Remapping for... also preserves important impact characteristics, such as expanding impact shocks, during a remapping... observations. Selected results are: (1) Electron impact ionization and charge exchange conspire... emission after each impact. After the largest CME impact, we found the..., France, Planetary Science Institute. The Deep Impact eXtended Investigation (DIXI) to comet... Physics Laboratory. The Deep Impact eXtended Investigation (DIXI) redirected the Deep Impact Flyby (DI..., accepted for publication. 506.05 Deep Impact MRI Observations Of Comet Garradd... , L. M. Feaga 1 Univ. of Maryland. The Deep Impact spacecraft observed comet C/2009 P1... ratio. Given the differences in impact velocity and surface gravitational acceleration... depth effects. Recent space missions (e.g. Deep Impact & EPOXI) have provided spectra from comets... from macro-porosity (gravitational aggregates, impact fractures) and 272 micro-porosity...



Дата загрузки: 2017-01-16
Скачать документ
Скачать текст
0.15/5
... ppm. Furthermore, EPOXI, NASA’s extended mission for the Deep Impact spacecraft, had been...). Prompted by the M3 discovery, EPOXI observed the Moon on its... [Sunshine et al., 2009]. These EPOXI observations were of the highest... metallic iron during local micrometeorite impact melting of the soil [Housley... Moon, shortly after the Giant Impact forming the Earth‐ Moon system... would be conspicuous. However, the impact velocity of these materials on... grains. This is accompanied by impact melting of the silicate soil... chemical changes. In addition, this impact‐induced comminution, with its instantaneous... with minute mass, have tremendous impact velocities (as high as ∼70..., it is this same micrometeorite impact force that has sufficient energy... and overturning the grains (impact gardening). This stochastic impact processing creates a chaotic... [22] Soil grains melted by impact may vaporize as a result of... glass pieces held together with impact‐generated melt, now present as.... This is due to micrometeorite impact and partial melting (Figure 3) and... particle radiation (Figure 4), all in deep vacuum (10−12 torr). The... actions of space weathering and impact gardening are capable of both... unsatisfied chemical bonds. Generally, an impact event provides a chemically reactive surface... created an autoreduction of the impact melt. The focus was on... region where M3, VIMS and EPOXI detected the features for the.... However, the proof of the impact‐induced vaporization and deposition by... for Temporal Variations From the Deep ImpactEPOXI Mission [68] An obvious answer... any future observational investigations. The EPOXI spacecraft spectrometer did cover the... E00G05 Figure 17. Examples of EPOXI observations of the 3 mm absorption... examples of our analysis of EPOXI observations [Sunshine et al., 2009... soil spectrum and 2.089 × the deep shadow spectrum (assumed to be... thought to come from the deep interior [e.g., Saal et al., 2008... ∼10 nm or 100 Angstroms deep – about 100 atomic layers [Starukhina... more: An overview of LCROSS impact results, Lunar Planet. Sci., 41st... 16 sample 66095: Origin by impact of a comet or a carbonaceous chondrite... by solar wind sputtering and impact vaporization, Bull. Am. Astron. Soc... hydration as observed by the Deep Impact spacecraft, Science, 326, 565–568...



Дата загрузки: 2017-10-24
Скачать документ
Скачать текст
0.43/5
... hotspot in the area of deep space communication. DTN uses a standard... delays and intermittent connectivity in deep space communications. Space craft disappear..., like Delay Tolerant Networking (DTN), Deep Space Networking (DSN), InterPlaNetary Internet... saving a lot of labor cost. • Deep Impact Network Experiment (DINET) On October... planet network) was called the Deep Impact Network Experiment (DINET)(Mukherjee J., 2012... 10 nodes: One is the Deep Impact Epoxi spacecraft (that is located at... was successfully uploaded on the Epoxi spacecraft and data was sent... - Images were sent to the Epoxi spacecraft and 3 hours later the... is very much common in deep space communication. To understand the... transfer will definitely help in deep space exploration where the hindrances... first from the workstation to a deep space antenna complex, then from..., i.e. from the workstation to the deep space antennae complex, of this... as the best option in deep space exploration in where communication...