INSAT-4A

INSAT 4A
	INSAT-4A spacecraft in deployed configuration
Mission type	Communications
Operator	INSAT
COSPAR ID	2005-049A
SATCAT no.	28911
Website	INSAT 4A
Mission duration	Planned: 12 years ; Achieved: 13 years, 9 months, 29 days
Spacecraft properties
Bus	I-3K
Manufacturer	ISRO
Launch mass	3,081 kilograms (6,792 lb)
Dry mass	1,386 kilograms (3,056 lb)
Dimensions	2.8 x 1.7 x 2.0 m
Power	5,922 watts
Start of mission
Launch date	21 December 2005, 22:33 UTC
Rocket	Ariane 5GS
Launch site	Kourou ELA-3
Contractor	Arianespace
End of mission
Disposal	Moved to a graveyard orbit
Deactivated	21 October 2019
Orbital parameters
Reference system	Geocentric
Regime	Geostationary
Slot	83° East (0°N 83°E / 0°N +83°E)
Period	24 hours
Transponders
Band	12 Ku band; 12 C-band
Bandwidth	36 megahertz
TWTA power	140 & 63 watts
EIRP	51 & 38 dbW

INSAT-4A was the first one in the INSAT-4 Satellites series, providing services in the K_u and C band frequency bands. At the time of launch, it was the heaviest satellite India had produced. The K_u transponders cover the Indian main land and C-Band transponders cover an extended area. It has a dozen K_u transponders and another dozen of C-band transponders. This spacecraft was placed at 83°E along with INSAT-2E and INSAT-3B, by Ariane launch vehicle (ARIANE5-V169).^[3]^[4]^[5]^[6]

Overview

INSAT-4A was a communication satellite intended for providing high quality television, telecommunication, broadcasting services and was the first satellite to be launched in the INSAT-4 series.

Launch

INSAT-4A was launched by an Ariane 5, produced by Arianespace, on 21 Dec 2005 at 22.33 UTC^[7]^[8] from Kourou, French Guiana. It was placed into a Geosynchronous Transfer Orbit (GTO), 30 minutes after lift-off in 3-axis stabilized mode, with a perigee of 859 km and an apogee of 36,055 km. Its co-passenger on board was Meteosat-9 of EUMETSAT.

Payload

12 K_u band transponders. It was being used by Tata Sky.
12 C-band transponders

End Of Life and Replacement

The satellite was placed in the graveyard orbit on 21 October 2019 after almost 14 years in service.^[2] A replacement satellite GSAT-30 was launched on 21:05 UTC, 16 January 2020 aboard Ariane 5 VA251.^[9]^[10]

References

^ "Salient features of INSAT-4A". Archived from the original on 28 October 2019. Retrieved 28 October 2019.
^ ^a ^b "Historical satellite position data for INSAT-4A for the month of October 2019". Retrieved 28 October 2019.
^ "Insat 4A, 4B".
^ "Insat-4A - Isro". Archived from the original on 2015-09-27. Retrieved 2017-01-29.
^ "SALIENT FEATURES OF INSAT-4A". www.ursc.gov.in. Archived from the original on 15 September 2015. Retrieved 2020-01-16.
^ "Space India, October 2005 - March 2006" (PDF).
^ "Ariane: 5 for 5 in 2005, Successful launch of Insat 4A and MSG-2". Arianespace. Retrieved 2022-12-20.
^ "INSAT-4A Launched Successfully". 2006-05-07. Archived from the original on 2006-05-07. Retrieved 2022-12-20.{{cite web}}: CS1 maint: bot: original URL status unknown (link)
^ "Press Release: India's communication satellite GSAT-30 launched successfully - ISRO". www.isro.gov.in. Archived from the original on 2020-05-30. Retrieved 2020-01-16.
^ "Flight VA251 – first Arianespace mission of 2020 a success: EUTELSAT KONNECT and GSAT-30 in orbit". Arianespace. Retrieved 2020-01-16.

Zdroj:https://en.wikipedia.org?pojem=INSAT-4A
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[URSC_INSAT-4A-1] "Salient features of INSAT-4A". Archived from the original on 28 October 2019. Retrieved 28 October 2019.

[eol-4a-2] "Historical satellite position data for INSAT-4A for the month of October 2019". Retrieved 28 October 2019.

[3] "Insat 4A, 4B".

[4] "Insat-4A - Isro". Archived from the original on 2015-09-27. Retrieved 2017-01-29.

[5] "SALIENT FEATURES OF INSAT-4A". www.ursc.gov.in. Archived from the original on 15 September 2015. Retrieved 2020-01-16.

[6] "Space India, October 2005 - March 2006" (PDF).

[7] "Ariane: 5 for 5 in 2005, Successful launch of Insat 4A and MSG-2". Arianespace. Retrieved 2022-12-20.

[8] "INSAT-4A Launched Successfully". 2006-05-07. Archived from the original on 2006-05-07. Retrieved 2022-12-20.{{cite web}}: CS1 maint: bot: original URL status unknown (link)

[9] "Press Release: India's communication satellite GSAT-30 launched successfully - ISRO". www.isro.gov.in. Archived from the original on 2020-05-30. Retrieved 2020-01-16.

[10] "Flight VA251 – first Arianespace mission of 2020 a success: EUTELSAT KONNECT and GSAT-30 in orbit". Arianespace. Retrieved 2020-01-16.

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v t e INSAT satellites
INSAT-1 series	INSAT-1A INSAT-1B INSAT-1C INSAT-1D
INSAT-2 series	INSAT-2A INSAT-2B INSAT-2C INSAT-2D INSAT-2DT INSAT-2E
INSAT-3 series	INSAT-3A INSAT-3B INSAT-3C INSAT-3D INSAT-3DR INSAT-3DS INSAT-3E
INSAT-4 series	INSAT-4A INSAT-4B INSAT-4C INSAT-4CR GSAT-6 / INSAT-4E GSAT-7 / INSAT-4F GSAT-8 / INSAT-4G

v t e ← 2004 Orbital launches in 2005 2006 →
January	Deep Impact Kosmos 2414, Universitetsky-Tatyana
February	AMC-12 USA-181 XTAR-EUR, Maqsat-B2 (Sloshsat-FLEVO) Himawari 6 Progress M-52 (TNS-0)
March	XM-3 Inmarsat-4 F1 Ekspress AM-2
April	USA-165 Apstar 6 Soyuz TMA-6 DART Spaceway 1 USA-182
May	Cartosat-1, HAMSAT NOAA-18 DirecTV-8 Foton-M No.2
June	Progress-M 53 Molniya-3K No.12 Cosmos 1 Intelsat Americas 8 Ekspress AM-3
July	Shijian 7 Suzaku STS-114 (Raffaello MPLM)
August	FSW-4 2 Thaicom 4 MRO Kirari, Reimei Monitor-E FSW-3 3
September	Kosmos 2415 Progress-M 54 (RadioSkaf) Anik F1R USA-183 USA-185
October	Soyuz TMA-7 CryoSat Shenzhou 6 Syracuse 3A, Galaxy 15 USA-186 Beijing-1, TopSat, Sina-1, SSETI Express (CubeSat Xi-V, UWE-1, nCUBE-2), Mozhaets-5, Rubin-5
November	Inmarsat-4 F2 Venus Express Spaceway-2, Telkom-2
December	Progress-M 55 Gonets-M No.1, Kosmos 2416 Meteosat 9, INSAT-4A Kosmos 2417, Kosmos 2418, Kosmos 2419 GIOVE-A AMC-23
Launches are separated by dots ( • ), payloads by commas ( , ), multiple names for the same satellite by slashes ( / ). Crewed flights are underlined. Launch failures are marked with the † sign. Payloads deployed from other spacecraft are (enclosed in parentheses).