Ajay Kumar at 07:48, 2 September 2023

2023-09-02T07:48:41Z

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{{Short description|Indian telecommunications satellite}}
{{Infobox spaceflight
| name = INSAT-2B
| image =
| image_caption =
| mission_type = Telecommunication and meteorological observation
| operator = [[INSAT]]
| COSPAR_ID =
| SATCAT =
| website =
| mission_duration = 11 years
| spacecraft_bus =
| manufacturer = [[Indian Space Research Organisation|ISRO]]
| launch_mass = {{convert|1906|kg}}
| dry_mass = 916 kg
| power = 1000 watts
| launch_date = 23 July, 1993
| launch_rocket = Ariane-4
| launch_site = Kourou, French Guiana
| launch_contractor = [[Arianespace]]
| entered_service =
| disposal_type =
| deactivated = 1 July, 2004
| orbit_reference = [[Geocentric orbit|Geocentric]]
| orbit_regime = [[Geostationary orbit|Geostationary]]
| orbit_longitude = 93.5 degree east
| orbit_slot =
| orbit_periapsis =
| orbit_apoapsis =
| orbit_inclination =
| orbit_period =
| orbit_epoch =
| apsis =
| trans_band =
| trans_frequency =
| trans_bandwidth =
| trans_capacity =
| trans_coverage =
| trans_TWTA =
| trans_EIRP =
| trans_HPBW =
| previous_mission = [[IRS-P2]]
| next_mission = [[INSAT-2C]]
}}
INSAT-2B (The [[Indian National Satellite System|Indian National Satellite system]]) was the second satellite in the INSAT 2 Series that was successfully launched for [[telecommunication]] and [[Meteorology|meteorological]] observation. This India satellite was launched on 23 July 1993 from Kourou, French Guiana and [[Ariane 4|Ariane-4]] being its launch vehicle.<ref name=":0">{{Cite web|title=INSAT-2B|url=https://www.vssc.gov.in/VSSC/index.php/insat-2b|access-date=2021-05-21|website=www.vssc.gov.in|archive-date=2021-05-21|archive-url=https://web.archive.org/web/20210521071854/https://www.vssc.gov.in/VSSC/index.php/insat-2b|url-status=dead}}</ref> INSAT-2B is placed in the geostationary orbit at a longitude of 93.5 degree East.<ref>{{Cite web|title=INSAT-2B - ISRO|url=https://www.isro.gov.in/Spacecraft/insat-2b|access-date=2021-05-21|website=www.isro.gov.in|archive-date=2021-05-21|archive-url=https://web.archive.org/web/20210521071852/https://www.isro.gov.in/Spacecraft/insat-2b|url-status=dead}}</ref> The satellites also carries a search and rescue(SAR) transponder, a data relay [[transponder]] and also high resolution radiometer. This [[radiometer]] has a resolution of {{cvt|2|km}} in the normal visible band and of {{cvt|8|km}} in the thermal infra red band.<ref name=":0" />

The lift off mass of the satellite was around {{cvt|1906|kg}} and dry mass of 916 kg with a [[spacecraft]] power of 1000 W.<ref name="directory.eoportal.org">{{Cite web|title=INSAT-2 - eoPortal Directory - Satellite Missions|url=https://directory.eoportal.org/web/eoportal/satellite-missions/i/insat-2|access-date=2021-05-21|website=directory.eoportal.org}}</ref> The Satellite had an operational lifespan of 11 years.<ref name=":0" /> The satellite completed its mission on 1 July 2004 and is out of service since then.<ref>{{Cite web|title=insat-2b|url=https://webapps.itc.utwente.nl/sensor/getsat.aspx?name=INSAT-2B|access-date=2021-05-21|website=Universiteit Twente - ITC|language=en}}</ref>

The major components of the satellite includes a VHRR (Very High-resolution Radiometer), DCS ([[Data collection system|Data Collection system]]) and SASAR (Satellite Aided and Rescue) system. This VHRR was completely designed & built at [[Indian Space Research Organisation|ISRO.]] The VHRR is capable of working in three modes namely full scan, normal scan and sector scan mode. The DCS provides environmental information using data relay transponder from Data collection platforms. SASAR gives us emergency alerts, if any, for the [[Indian subcontinent]].<ref name="directory.eoportal.org"/>

== References ==
{{Reflist}}

[[Category:INSAT satellites]]

{{Spacecraft-stub}}

INSAT-2B - Revision history

Ajay Kumar at 07:48, 2 September 2023