Спутник связи. Protostar 2. [Редактировать]

ProtoStar 2 / IndoStar 2 – второй космический аппарат (КА) орбитальной группировки оператора ProtoStar, который заменил находящийся на орбите спутник Cakrawarta 1. Новый спутник обеспечил прямое телевещание и другие услуги связи, включая широкополосный доступ в Интернет, на территории Индонезии, Индии, Филиппин и Тайваня. 
На спутнике, изготовленном на базе платформы Boeing 601 HP, установлены транспондеры S- и Ku-диапазонов, которые значительно увеличат орбитальную емкость компании ProtoStar. Этот аппарат стал самым мощным в группировке ProtoStar, вырабатывая почти 10 кВт мощности. 
Полезная нагрузка S-диапазона включает 10 активных и 3 запасных усилителя на лампе бегущей волны. По соглашению с ProtoStar индонезийский оператор Indovision предоставляет услуги непосредственного телевизионного вещания (DTH) в S-диапазоне для Индонезии. 
Первая полезная нагрузка Ku-диапазона предназначена для непосредственного телевизионного вещания и других услуг связи на территории Индии. Вторая полезная нагрузка Ku-диапазона может переключаться между Филиппинами, Индонезией и Тайванем для обеспечения доступа в Интернет и других коммуникационных услуг.

Дополнительные наименования

#НаименованияПоиск в новостяхПоиск в документах
1IndoStar 2НайтиНайти
234941НайтиНайти
3SES-7НайтиНайти

Дополнительная классификация

#Наименования
1Страна оператор(владелец) - США
2Тип оператора(владельца) - коммерческий
3Тип орбиты - ГСО
4Страна производитель - США
5Все спутники связи

Новостная лента[Найти информацию в новостях] [Найти информацию в документах]

#Новостная лента.
12016-06-01. SES-9 готов к коммерческой эксплуатации.
Космический аппарат компании SES, который оснащен 81 эквивалентными 36 МГц транспондерами (57 физических Ku диапазона) начал свою совместную с КА SES-7 работу и в скором времени полностью заменит на орбите космический аппарат NSS-11.
SES-9, был построен компанией Boeing и, на текущий момент времени, является крупнейшим космическим аппаратом оператора в Азиатско-Тихоокеанского регионе. Тэги: SES 9Protostar 2GE 1ASES

Технические характеристики

#ХарактеристикаЗначение
1Масса, кг3905
2Масса (сухая), кг3087
3Платформа 1xHS-601HP
4Количество (Ku-стволов), шт.27
5Количество (S стволов), шт.13
6Мощность, Вт9900

Характеристики орбиты

#ХарактеристикаЗначение
1Наклонение, град0.1
2Апогей, км35798.1
3Перигей, км35790.2
4Период, минут1436.1
5САС, год15
6Длинный диаметр эллипса, км42165

Пусковые характеристики

#ХарактеристикаЗначение
1Код NSSDC2009-027A

Экономические характеристики

#ХарактеристикаДата измеренияЗначение
1Оператор SES
2Производитель BOEING COMPANY
3Срок (производства), месяц24

Информация об удачном запуске

#ХарактеристикаЗначение
1Космодром Байконур
2Дата пуска2009-05-16 at 00:57:00 UTC
3Полезная нагрузка 1xProtostar 2
4Ракета-носитель 1xПротон-М с РБ «Бриз-М»

Найдено 404 документов по запросу «Protostar 2». [Перейти к поиску]


Дата загрузки: 2017-03-22
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0.14/5
... and detailed structure of the protostar all the way from its... three timescales relevant for the protostar: (1) the free-fall timescale of... when we consider the forming protostar itself. Initially, the temperature of... estimate the maximum size that a protostar can have as well as... maximum possible radius of the protostar � � M∗ 3 GM∗2 = 36 R⊙ Rmax = . (5.10) 10... equation tells us, that for a protostar with a fixed mass M∗ , the energy... referred to as ’Hayashi track’. A protostar is often defined as an... etc.. Figure 5.3: Structure of a spherical protostar and its infalling envelope. The.... Note ity and size of a protostar, but these are rather the... of emission is not the protostar itself, but rather a sort of.... For the center of the protostar, Mr and Lint vanish M (0) = Lint... mass and radius of our protostar from the start. Initial conditions... 2004). temperature exceeds �Lcrit �, the protostar becomes quickly fully convective. This... the gravitational energy of the protostar. Thus, deuterium regulates in that... mass-radius relation of the protostar (this depends on the mass... in the core of the protostar reaches ∼ 2.5 106 K, Li-burning consumes... the disk onto the central protostar. 5.5.1 Theory Within the accretion disk... the inner disk onto the protostar and leads at the same..., mass and luminosity of the protostar (pre-main sequence star). Fig... finding of Hayashi (1966) that a protostar of a certain radius and mass... temperatures lower than that, the protostar is not stable and will...



Дата загрузки: 2017-10-09
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0.01/5
... the central object is a single protostar, a multiple system or an unresolved... of a rapidly rotating and contracting protostar ͑for a review see Durisen & Tohline... the infalling envelope surrounding the protostar and disk. Since circumstellar envelopes... formed as the gas around a protostar accretes to the central star... in protoplanetary disks near the protostar using local three-dimensional resistive... including the magnetosphere of the protostar and the “dead zone” ͑low...͒. Both in the magnetosphere of a protostar and in the dead zone... boundary between the magnetosphere of a protostar and the disk͒. Then Kelvin... believe is a high mass embedded protostar perhaps heated by magnetically channeled...



Дата загрузки: 2017-09-24
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0.41/5
... star from gases in the protostar. Protostar. It is a highly condensed cloud... of protostar is only a stage in the formation of complete star. A protostar does not emit light. Formation of star from protostar. The protostar is... tremendous gravitational force. As the protostar begins to contract further, the... cloud of Contracting hydrogen gas (b) A protostar. (c) A star is formed, (Formed by... atoms raise the temperature of protostar from – 173°C to 107°C. At... temperature and pressure inside. The protostar now begins to glow and... under its molecules in the protostar raised its temperature greatly which... energy duo to which the protostar began emitting heat and light... position of stars. How is a protostar formed? Name any two constellations...? Name the gases that constitute a protostar. Name any one celestial object...? Write any one difference between a protostar and the sun. Mention one... is fusion of helium nuclei: A protostar, a red giant star, a white dwarf... in the life of a star protostar or neutron star? State the... briefly the formation of a star a protostar. Write two points of differences...



Дата загрузки: 2017-09-25
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0.03/5
... a bi-modal distribution of multiple protostar system separations. The bi-modal... luminosity dramatically increases after the protostar reaches ~ 5 Msun due to KelvinHelmholz... have performed simulations of isolated protostar formation, studying the production of... angular momentum away from the protostar and reducing the efficiency of... present the results from our protostar and molecular cloud simulations. Author... observed from a number of massive protostar candidates. Studies of the morphologies... driven by a low-mass Class 0/I protostar. Previous ALMA Cycle 0 12CO observation... then undergo collapse to form a protostar (Seo et al. 2015). We... 0.084±0.004 AU from the protostar on average. This size is... of the Eruptive FUor/EXor Protostar V1647 Ori with ALMA Fu...



Дата загрузки: 2017-06-15
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0.11/5
... is transferred to the central protostar. Material from the molecular cloud... with radial distance from the protostar and with a median value given... the mass of the accreting protostar in solar masses and rd..., rotating, free-fall collapse, with a protostar and its accretion disk forming... the second hydrostatic object, the protostar. Submillimetre and FIR observations can... sources where the deeply embedded protostar/disk system is still growing... greater than that of the protostar plus disk. Class I sources are... to form closer to the protostar than the Kuiper belt (short... is eventually consumed by the protostar. Later evolutionary phases are more... radial transport onto the central protostar was treated by Bauer et... UV radiation from the central protostar gets scattered and redistributed in... of the dynamics of collapsing protostar, MNRAS 145, 271–295. Lee... methanol in the solar-type protostar IRAS 16293–2422, A&A 393, L49... mass to the stabilizing central protostar (see Bodenheimer et al. 1993...



Дата загрузки: 2017-10-09
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0.18/5
... is 20 AU. A solar-mass protostar is located at disks center... a precocious child, the developing star (protostar) is far too young for.... The strange behavior of this protostar reveals that something else might... precursor to a star, called a Class 0 protostar, far earlier in a star’s evolution... matter is falling toward the protostar core 10 times faster than... sources are stars) The Class 0 protostar that Kenji Hamaguchi’s team observed.... Zooming in on the Class 0 protostar, we see it once more...’s team discovered X-rays from a Class 0 protostar in the R Corona Australis star... magnetic fields in the spinning protostar core accelerate infalling matter to... of X-rays in the Class 0 protostar to what happens during solar... from an extremely young Class 0 protostar provides a crucial link in understanding... Subaru telescope to determine the protostar’s age. ”The age is based... the infrared light, as the protostar evolves over the course of...



Дата загрузки: 2017-03-22
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0.18/5
... of colors and fluxes of protostar in the Herschel filters. We.... 2010), and the Herschel Orion Protostar Survey (HOPS) and DIGIT programs... the emergent spectrum of the protostar in the far-IR since... parameters used to model the protostar SEDs. flux density ratios. The... the entire set of 2016 protostar systems as seen with 10... sample the peak of the protostar’s SED and we expect Herschel... densities, we first selected a typical protostar system, here defined to have... coldest dust present in the protostar. Thus, we note significantly more.... The fluxes are reported for a protostar at the distance of Orion... only one parameter for that protostar. The diamond symbols show the... more luminous than our typical protostar of 1 L . Only 3 sources with two... the phase space occupied by protostar in the Herschel filters. Disentangling...



Дата загрузки: 2017-04-23
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0.06/5
... the molecular core around the protostar. 158 The early stages of... gas kinematics expected near the protostar, where infall, outflow, and rotation... toward the S140 IRS1 massive protostar. The continuum emission arises from... environmental conditions (e.g., the Herschel Orion Protostar Survey (HOPS) in the Orion... 3 mm wavelength in the young protostar NGC1333-IRS3 ([14]). Right: Radio... moving away from the central protostar at velocities of several hundreds... of the evolution of the protostar-disk-jet systems. Such maser... 1010 K, allowing us to observe protostar-disk-jet systems at very... radio jet associated with the protostar NGC2071IRS3 ([54]). Top-right panel...), bipolar outflow from a very embedded protostar of unknown nature in the...: Magnetic field structure around the protostar-disk-jet system of Cepheus...) for a full modeling of the protostar-disk-jet systems. In addition...



Дата загрузки: 2017-09-24
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0.2/5
... both increases the likelihood that a protostar is identified within a core, and... the mass available to each protostar as it grows in mass... AU (30 ) of the central protostar and both starless and protostellar... of which happens to contain a protostar. This could occur due to... one object is identified as a protostar. In clusters, it is often... of a given mass to form a protostar (tsf ) to the timescale for..., t = 0 is the time at which a protostar forms, and T = 0.5 Myr the timescale... through accretion and outflow as a protostar. For this model, the time... total mass available to each protostar for accretion, which relates directly... which continue after the central protostar has formed (Adams & Shu 2007... to grow in mass once a protostar has formed, M˙ acc and m ˙ have... peaking at the point when a protostar is formed. The observed distributions...



Дата загрузки: 2017-06-15
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0.06/5
...-fide starless core or Class 0 protostar (60 sources). This classification is... it is a very young Class 0 protostar, or maybe even at the... or contain an embedded Class 0 protostar or first hydrostatic core (one... toward the only confirmed young protostar in Cha I (Cha-MMS1 or... (2) (3) 60 starless core or Class 0 protostar 13 young stellar object (Class... and is certainly not a Class 0 protostar (see also Lommen et al... the luminosities of the central protostar and its circumstellar disk, if... second outflow produced once the protostar (second core) is formed. It... I. Only one object is a Class 0 protostar (or first core), hence a very... K). It contains the single Class 0 protostar (Cha1-C1) and two of...