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{{Short description|Indian telecommunications satellite}} | |||
{{Infobox spaceflight | {{Infobox spaceflight | ||
| name = INSAT 3C | | name = INSAT 3C | ||
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| image_caption = | | image_caption = | ||
| mission_type = [[Communications satellite|Communications]]<br/>[[Weather satellite|Weather]] | | mission_type = [[Communications satellite|Communications]]<br />[[Weather satellite|Weather]] | ||
| operator = [[INSAT]] | | operator = [[INSAT]] | ||
| website = [http://www.isro.org/satellites/insat-3c.aspx INSAT 3C] | | website = [http://www.isro.org/satellites/insat-3c.aspx INSAT 3C] | ||
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| trans_EIRP = | | trans_EIRP = | ||
| trans_HPBW = | | trans_HPBW = | ||
| programme = [[Indian National Satellite System|INSAT]] | |||
| previous_mission = [[INSAT-3B]] | |||
| next_mission = [[INSAT-3D]] | |||
}} | }} | ||
'''INSAT-3C''' is a multipurpose [[satellite]] built by [[ISRO]] and launched by [[Arianespace]] in Jan 2002. 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, India|Hassan]] in [[Karnataka]]. It will provide voice, video and digital data services to India and neighboring countries. | '''INSAT-3C''' is a multipurpose [[satellite]] built by [[ISRO]] and launched by [[Arianespace]] in Jan 2002.<ref>{{Cite web |url=http://www.isro.org/satellites/insat-3c.aspx |title=Welcome to ISRO :: Satellites :: Geo-Stationary Satellite :: INSAT-3C |access-date=2010-12-23 |archive-url=https://web.archive.org/web/20141016023425/http://www.isro.org/satellites/insat-3c.aspx |archive-date=2014-10-16 |url-status=dead }}</ref> 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, India|Hassan]] in [[Karnataka]]. It will provide voice, video and digital data services to India and neighboring countries. | ||
== Launch == | == 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 [[Apogee kick motor|Liquid Apogee Motor(LAM)]]. The satellite carried about 1.5 tonne of propellant ([[Monomethylhydrazine|MMH (MonoMethylHydrazine)]] and [[Mixed Oxides of Nitrogen|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 | 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 [[Apogee kick motor|Liquid Apogee Motor(LAM)]]. The satellite carried about 1.5 tonne of propellant ([[Monomethylhydrazine|MMH (MonoMethylHydrazine)]] and [[Mixed Oxides of Nitrogen|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 sensor]]s, inertial reference unit and [[Magnetorquer|magnetic torquers]]. It is equipped with unified bi-propellant thrusters.<ref>{{cite web|title=Insat 3|url=http://www.astronautix.com/i/insat3.html|publisher=Astronautix.com|access-date=December 3, 2022}}</ref> | ||
== Payload == | == 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. | 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.<ref>{{Cite web|last=Krebs|first=Gunter D. “|title=Insat 3C"|publisher=Gunter's Space Page|access-date=December 3, 2022|url=https://space.skyrocket.de/doc_sdat/insat-3c.htm}}</ref> | ||
* 24 Normal [[C band (IEEE)|C-band]] transponders providing an EIRP of 37 dBW | * 24 Normal [[C band (IEEE)|C-band]] transponders providing an EIRP of 37 dBW | ||
* 6 Extended C-band transponders with 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 | * 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 | * 1 MSS transponder operating in S-band up-link and C-band downlink | ||
The satellite was designed for operations near 74 deg Longitude.<ref>{{cite web|title=INSAT-3C|url=https://www.isro.gov.in/INSAT_3C.html|access-date=December 3, 2022|publisher=ISRO}}</ref><ref>{{cite web |url=http://www.lyngsat.com/in3c.html |title=LyngSat Insat 3C at 74.0°E |website=www.lyngsat.com |url-status=dead |archive-url=https://web.archive.org/web/20040507021541/http://www.lyngsat.com/in3c.html |archive-date=2004-05-07}}</ref> | |||
== References == | == References == | ||
{{Reflist}} | {{Reflist}} | ||
==External links== | ==External links== | ||
{{Portal|Spaceflight}} | |||
* [ | * [https://www.isro.gov.in/ ISRO website] | ||
* [https | * [https://www.antrix.co.in/ Commercial arm of ISRO] | ||
* [https:// | * [https://www.isro.gov.in/DOS&ISROHQ.html Dept. of Space Under Dept. of Science & Technology, Government Of India] | ||
{{INSAT Satellites}} | {{INSAT Satellites}} | ||
Latest revision as of 16:22, 23 November 2025
 | |
| 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[edit | edit source]
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[edit | edit source]
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[edit | edit source]
- ↑ "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[edit | edit source]
- ISRO website
- Commercial arm of ISRO
- Dept. of Space Under Dept. of Science & Technology, Government Of India
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