INSAT-3C

INSAT 3C
Mission type	Communications; Weather
Operator	INSAT
COSPAR ID	2002-002A
SATCAT no.	27298
Website	INSAT 3C
Spacecraft properties
Bus	I-2K
Manufacturer	ISRO
Launch mass	2,750 kg (6,060 lb)
Dry mass	1,210 kg (2,670 lb)
Power	2.765 kilowatts
Start of mission
Launch date	23 January 2002, 23:46:57 UTC
Rocket	Ariane-42L H10-3
Launch site	Kourou ELA-3
Contractor	Arianespace
Orbital parameters
Reference system	Geocentric
Regime	Geostationary
Longitude	74° East (0°N 74°E / 0°N +74°E)
Inclination	4 degrees
Period	24 hours

INSAT-3C is a multipurpose satellite built by ISRO and launched by Arianespace in Jan 2002.^[1] INSAT-3C is the second satellite of the INSAT-3 series. All the transponders provide coverage over India. Insat-3C is controlled from the Master Control Facility at Hassan in Karnataka. It will provide voice, video and digital data services to India and neighboring countries.

Launch

INSAT 3C was launched by the Ariane 4 launch vehicle of Arianespace at 5:17 am IST from Kourou, French Guiana in South America. INSAT-3C was placed into a Geo-synchronous Transfer Orbit (GTO), 21 minutes after the lift-off, in a 3-axis stabilised mode, with a perigee of 570 km and an apogee of 35,920 km and an inclination of 4° with respect to the equator. After 4 maneuvers INSAT-3C has been put in its final three axis stabilised mode on February 1, 2002. The orbit rising maneuvers were carried out in phases by firing the 440 Newton Liquid Apogee Motor(LAM). The satellite carried about 1.5 tonne of propellant (MMH (MonoMethylHydrazine) and MON-3 (Mixed Oxides of Nitrogen)) for orbit raising operations as well as for station keeping and in-orbit attitude control.INSAT-3C like all of its predecessors in the INSAT series has a 3-axis body stabilized spacecraft using momentum/reaction wheels Earth sensors, Sun sensors, inertial reference unit and magnetic torquers. It is equipped with unified bi-propellant thrusters.^[2]

Payload

INSAT-3C, carrying Fixed Satellite Services (FSS) transponders, Broadcast Satellite Services (BSS) transponders & Mobile Satellite Services (MSS) transponders is intended to continue the service of INSAT-2DT and INSAT-2C which were nearing their end to life besides enhancing and augmenting the INSAT system capacity.^[3]

24 Normal C-band transponders providing an EIRP of 37 dBW
6 Extended C-band transponders with EIRP of 37 dBW
2 S-band transponders to provide BSS services with 42 dBW EIRP
1 MSS transponder operating in S-band up-link and C-band downlink

The satellite was designed for operations near 74 deg Longitude.^[4]^[5]

References

^ "Welcome to ISRO :: Satellites :: Geo-Stationary Satellite :: INSAT-3C". Archived from the original on 2014-10-16. Retrieved 2010-12-23.
^ "Insat 3". Astronautix.com. Retrieved December 3, 2022.
^ Krebs, Gunter D. “. "Insat 3C"". Gunter's Space Page. Retrieved December 3, 2022.
^ "INSAT-3C". ISRO. Retrieved December 3, 2022.
^ "LyngSat Insat 3C at 74.0°E". www.lyngsat.com. Archived from the original on 2004-05-07.

External links

[1] "Welcome to ISRO :: Satellites :: Geo-Stationary Satellite :: INSAT-3C". Archived from the original on 2014-10-16. Retrieved 2010-12-23.

[2] "Insat 3". Astronautix.com. Retrieved December 3, 2022.

[3] Krebs, Gunter D. “. "Insat 3C"". Gunter's Space Page. Retrieved December 3, 2022.

[4] "INSAT-3C". ISRO. Retrieved December 3, 2022.

[5] "LyngSat Insat 3C at 74.0°E". www.lyngsat.com. Archived from the original on 2004-05-07.

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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 ← 2001 Orbital launches in 2002 2003 →
January	USA-164 INSAT-3C
February	Tsubasa, DASH, VEP-3 HESSI Iridium 90, Iridium 91, Iridium 94, Iridium 95, Iridium 96 EchoStar VII Intelsat 904 Kosmos 2387
March	Envisat STS-109 TDRS-9 GRACE Progress M1-8 Shenzhou 3 JCSAT-8, Astra 3A Intelsat 903
April	Kosmos 2388 STS-110 (ITS S0) NSS-7 Soyuz TM-34
May	SPOT-5, Idefix Aqua DirecTV-5 Feng Yun 1D, Hai Yang 1A Ofek-5 Kosmos 2389
June	Intelsat 905 STS-111 (Leonardo MPLM) Ekspress A1R Galaxy 3C Iridium 97, Iridium 98 NOAA-17 Progress M-46
July	CONTOUR Stellat 5, N-STAR c Kosmos 2390, Kosmos 2391 Kosmos 2392
August	Hot Bird 6 EchoStar VIII Atlantic Bird 1, MSG-1
September	Intelsat 906 USERS, Kodama METSAT Tsinghua 2 Hispasat 1D Progress M1-9 Nadezhda 7
October	STS-112 (ITS S1) Foton-M No.1 INTEGRAL Zi Yuan 2B Soyuz TMA-1
November	STS-113 (ITS P1, MEPSI 1A, MEPSI 1B) Astra 1K AlSAT-1, Mozhayets 3, Rubin-3
December	TDRS-10 Hot Bird 7, Stentor, MFD-A, MFD-B ADEOS II, Kanta Kun, FedSat, µ-LabSat 1 (RITE 1, RITE 2) NSS-6 TrailBlazer-2001 STA, Saudisat 1C, LatinSat A, LatinSat B, UniSat 2, Rubin 2 Kosmos 2393 Kosmos 2394, Kosmos 2395, Kosmos 2396 Shenzhou 4 Nimiq 2
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).