IRNSS-1G - Revision history

DarellBabcock5 at 12:47, 21 January 2026

2026-01-21T12:47:47Z

← Older revision		Revision as of 18:17, 21 January 2026
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			{{Short description\|Indian navigation satellite}}
	{{use dmy dates\|date=January 2014}}		{{use dmy dates\|date=January 2014}}
	{{use Indian English\|date=January 2014}}		{{use Indian English\|date=January 2014}}
	{{Infobox spaceflight		{{Infobox spaceflight
	\| name = ~~PSLV-C33/~~IRNSS-1G		\| name = IRNSS-1G
	\| image = IRNSS Series 1.jpg		\| image = IRNSS Series 1.jpg
	\| image_caption =		\| image_caption =
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	\| COSPAR_ID =		\| COSPAR_ID =
	\| SATCAT = 41469		\| SATCAT = 41469
	\| mission_duration = 12 years		\| mission_duration = Planned: 12 years<br />Elapsed: {{time interval\|28 April 2016\|show=ymd\|sep=,}}

	<!--Spacecraft properties-->		<!--Spacecraft properties-->
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	<!--Launch details-->		<!--Launch details-->
	\| launch_date = {{start date\|2016\|04\|28\|12\|50\|00\|7=~~UTC~~+05:30}}		\| launch_date = {{start date\|2016\|04\|28\|12\|50\|00\|7=+05:30}}
	\| launch_rocket = [[Polar Satellite Launch Vehicle\|PSLV-XL]] C33		\| launch_rocket = [[Polar Satellite Launch Vehicle\|PSLV-XL]] C33
	\| launch_site = [[Satish Dhawan Space Centre\|Satish Dhawan]] ([[Satish Dhawan Space Centre First Launch Pad\|First]])		\| launch_site = [[Satish Dhawan Space Centre\|Satish Dhawan]] ([[Satish Dhawan Space Centre First Launch Pad\|First]])
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	\| orbit_regime = Geosynchronous Orbit (GSO)		\| orbit_regime = Geosynchronous Orbit (GSO)
	\| orbit_periapsis = {{convert\|35780.961\|km\|abbr=on}}<ref name=		\| orbit_periapsis = {{convert\|35780.961\|km\|abbr=on}}<ref name=
	"TLE">{{cite web \| url=http://www.celestrak.com/cgi-bin/TLE.pl?CATNR=41469 \| title=NORAD Catalog Number 41469 \| publisher=NORAD \| access-date=2 June 2017}}</ref>		"TLE">{{cite web \| url=http://www.celestrak.com/cgi-bin/TLE.pl?CATNR=41469 \| title=NORAD Catalog Number 41469 \| publisher=NORAD \| access-date=2 June 2017 }}{{Dead link\|date=July 2025 \|bot=InternetArchiveBot \|fix-attempted=yes }}</ref>
	\| orbit_apoapsis = {{convert\|35796.200\|km\|abbr=on}}<ref name=		\| orbit_apoapsis = {{convert\|35796.200\|km\|abbr=on}}<ref name=
	"TLE" />		"TLE" />
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	\| apsis = gee		\| apsis = gee

	\| programme = [[~~Polar Satellite Launch Vehicle~~]]		\| programme = [[NavIC]]
	\| previous_mission = [[~~PSLV~~-~~C32~~]]		\| previous_mission = [[IRNSS-1F]]
	\| next_mission = [[~~PSLV~~-~~C34~~]]		\| next_mission = [[IRNSS-1H]]

	}}		}}
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	'''IRNSS-1G''' was the seventh and final<ref name="Launch" /> of the [[Indian Regional Navigation Satellite System]] (IRNSS) series of satellites after [[IRNSS-1A]], [[IRNSS-1B]], [[IRNSS-1C]], [[IRNSS-1D]], [[IRNSS-1E]] and [[IRNSS-1F]]. This system of satellites will provide navigational services to the Indian region. The satellite was launched successfully on 28 April 2016 at 07:20 UTC.<ref name="Launch" />		'''IRNSS-1G''' was the seventh and final<ref name="Launch" /> of the [[Indian Regional Navigation Satellite System]] (IRNSS) series of satellites after [[IRNSS-1A]], [[IRNSS-1B]], [[IRNSS-1C]], [[IRNSS-1D]], [[IRNSS-1E]] and [[IRNSS-1F]]. This system of satellites will provide navigational services to the Indian region. The satellite was launched successfully on 28 April 2016 at 07:20 UTC.<ref name="Launch" />

	IRNSS-1G along IRNSS-1A is being used only for NavIC's short message broadcast service and not for navigation.<ref name=":11">{{cite web\|title=Annual Report 2019-20\|url=https://www.isro.gov.in/sites/default/files/flipping_book/annual_report_2019-20_english/index.html#50\|access-date=5 March 2020\|publisher=Department of Space}}</ref><ref name="ar-2021">{{cite web\|title=ANNUAL REPORT 2020-2021\|url=https://www.isro.gov.in/sites/default/files/anual_report_2020-2021_english.pdf\|access-date=6 March 2021\|publisher=ISRO}}</ref>		IRNSS-1G along IRNSS-1A is being used only for NavIC's short message broadcast service and not for navigation.<ref name=":11">{{cite web\|title=Annual Report 2019-20\|url=https://www.isro.gov.in/sites/default/files/flipping_book/annual_report_2019-20_english/index.html#50\|access-date=5 March 2020\|publisher=Department of Space\|archive-date=6 April 2020\|archive-url=https://web.archive.org/web/20200406131804/https://www.isro.gov.in/sites/default/files/flipping_book/annual_report_2019-20_english/index.html#50\|url-status=dead}}</ref><ref name="ar-2021">{{cite web\|title=ANNUAL REPORT 2020-2021\|url=https://www.isro.gov.in/sites/default/files/anual_report_2020-2021_english.pdf\|access-date=6 March 2021\|publisher=ISRO\|archive-date=25 April 2021\|archive-url=https://web.archive.org/web/20210425173704/https://www.isro.gov.in/sites/default/files/anual_report_2020-2021_english.pdf\|url-status=dead}}</ref>

	== Launch ==		== Launch ==
	The satellite was launched from the [[Satish Dhawan Space Centre First Launch Pad\|First Launch Pad (FLP)]] of [[Satish Dhawan Space Centre]], [[Sriharikota]] on board [[Polar Satellite Launch Vehicle\|PSLV-C33]] XL on 28 April 2016 at 12:50 PM [[Indian Standard Time\|IST]].<ref name="Launch">{{Cite news\|url =http://www.thehindu.com/sci-tech/science/irnss-launch-indias-own-regional-navigation-satellite-system-takes-shape/article8531388.ece\|title = India launches seventh navigation satellite, to get its own GPS \|date = April 28, 2016\|work = The Hindu\|access-date = April 28, 2016}}</ref><ref>{{cite web\|title=PSLV-C33/IRNSS-1G\|url=http://www.isro.gov.in/launcher/pslv-c33-irnss-1g\|access-date=28 April 2016\|publisher=ISRO}}</ref> The countdown of the launch had begun 51:30 hours before at 9:20 AM IST on 25 April 2016.<ref name="countdown" />		The satellite was launched from the [[Satish Dhawan Space Centre First Launch Pad\|First Launch Pad (FLP)]] of [[Satish Dhawan Space Centre]], [[Sriharikota]] on board [[Polar Satellite Launch Vehicle\|PSLV-C33]] XL on 28 April 2016 at 12:50 PM [[Indian Standard Time\|IST]].<ref name="Launch">{{Cite news\|url =http://www.thehindu.com/sci-tech/science/irnss-launch-indias-own-regional-navigation-satellite-system-takes-shape/article8531388.ece\|title = India launches seventh navigation satellite, to get its own GPS \|date = April 28, 2016\|work = The Hindu\|access-date = April 28, 2016}}</ref><ref>{{cite web\|title=PSLV-C33/IRNSS-1G\|url=http://www.isro.gov.in/launcher/pslv-c33-irnss-1g\|access-date=28 April 2016\|publisher=ISRO\|archive-date=28 April 2016\|archive-url=https://web.archive.org/web/20160428170026/http://www.isro.gov.in/launcher/pslv-c33-irnss-1g\|url-status=dead}}</ref> The countdown of the launch had begun 51:30 hours before at 9:20 AM IST on 25 April 2016.<ref name="countdown" />

	After the launch of IRNSS-1G the Indian government named the IRNSS system as NAVIC ('''Nav'''igation with '''I'''ndian '''C'''onstellation).<ref>{{Cite web\|title=PSLV-C33 Successfully Launches India's Seventh Navigation Satellite IRNSS-1G - ISRO\|url=https://www.isro.gov.in/update/28-apr-2016/pslv-c33-successfully-launches-indias-seventh-navigation-satellite-irnss-1g\|access-date=2021-11-01\|website=www.isro.gov.in}}</ref>		After the launch of IRNSS-1G the Indian government named the IRNSS system as NAVIC ('''Nav'''igation with '''I'''ndian '''C'''onstellation).<ref>{{Cite web\|title=PSLV-C33 Successfully Launches India's Seventh Navigation Satellite IRNSS-1G - ISRO\|url=https://www.isro.gov.in/update/28-apr-2016/pslv-c33-successfully-launches-indias-seventh-navigation-satellite-irnss-1g\|access-date=2021-11-01\|website=www.isro.gov.in\|archive-date=1 November 2021\|archive-url=https://web.archive.org/web/20211101171131/https://www.isro.gov.in/update/28-apr-2016/pslv-c33-successfully-launches-indias-seventh-navigation-satellite-irnss-1g\|url-status=dead}}</ref>

	== Specifications ==		== Specifications ==
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	'''Lift-off mass:'''{{Convert\|1425\|kg}}		'''Lift-off mass:'''{{Convert\|1425\|kg}}

	'''Dry mass:''' {{Convert\|598\|kg}}.<ref name="Spec">{{cite web \| url=http://www.isro.gov.in/sites/default/files/pslv-c33_brochure.pdf \| title=PSLV-C33 - IRNSS-1G Specifications \| publisher=ISRO \| access-date=28 April 2016}}</ref>		'''Dry mass:''' {{Convert\|598\|kg}}.<ref name="Spec">{{cite web \| url=http://www.isro.gov.in/sites/default/files/pslv-c33_brochure.pdf \| title=PSLV-C33 - IRNSS-1G Specifications \| publisher=ISRO \| access-date=28 April 2016 \| archive-date=25 April 2016 \| archive-url=https://web.archive.org/web/20160425202808/http://www.isro.gov.in/sites/default/files/pslv-c33_brochure.pdf \| url-status=dead }}</ref>

	'''Payload:''' [[Code-division multiple access\|CDMA]] ranging payload in [[C band (IEEE)\|C band]].<ref>{{Cite news\|url =http://www.business-standard.com/article/current-affairs/isro-launches-rocket-carrying-india-s-seventh-navigation-satellite-116042800308_1.html\|title = 'Isro launches rocket carrying India's seventh navigation satellite'\|date = April 28, 2016\|work = Business Standard\|access-date = April 28, 2016}}</ref><ref name=":0">{{Cite web\|title=SALIENT FEATURES OF IRNSS 1G\|url=https://www.ursc.gov.in/navigation/html/irnss-1g.jsp\|access-date=2021-11-01\|website=www.ursc.gov.in}}</ref> Navigation payload in [[L band\|L-5]] and [[S band]] spectrums and [[Rubidium atomic clock\|Rubidium atomic clocks]].<ref>{{cite web \| url=http://www.isro.gov.in/Spacecraft/irnss-1g \| title=IRNSS-1G \| work=ISRO \| access-date=28 April 2016}}</ref>		'''Payload:''' [[Code-division multiple access\|CDMA]] ranging payload in [[C band (IEEE)\|C band]].<ref>{{Cite news\|url =http://www.business-standard.com/article/current-affairs/isro-launches-rocket-carrying-india-s-seventh-navigation-satellite-116042800308_1.html\|title = 'Isro launches rocket carrying India's seventh navigation satellite'\|date = April 28, 2016\|work = Business Standard\|access-date = April 28, 2016}}</ref><ref name=":0">{{Cite web\|title=SALIENT FEATURES OF IRNSS 1G\|url=https://www.ursc.gov.in/navigation/html/irnss-1g.jsp\|access-date=2021-11-01\|website=www.ursc.gov.in}}</ref> Navigation payload in [[L band\|L-5]] and [[S band]] spectrums and [[Rubidium atomic clock\|Rubidium atomic clocks]].<ref>{{cite web \| url=http://www.isro.gov.in/Spacecraft/irnss-1g \| title=IRNSS-1G \| work=ISRO \| access-date=28 April 2016 \| archive-date=24 April 2016 \| archive-url=https://web.archive.org/web/20160424010008/http://www.isro.gov.in/Spacecraft/irnss-1g \| url-status=dead }}</ref>

	'''Power:''' Two [[Multi-junction solar cell\|triple-junction solar panels]] to generate 1660W of energy and one Lithium-ion 90A-hr battery is used.<ref name="Spec" />		'''Power:''' Two [[Multi-junction solar cell\|triple-junction solar panels]] to generate 1660W of energy and one Lithium-ion 90A-hr battery is used.<ref name="Spec" />

	'''Propulsion:''' [[Monomethylhydrazine\|MMH]]/[[Mixed oxides of nitrogen\|MON3]] based bipropellant system with 12×22N [[Attitude control]] thrusters and one 440N [[Liquid apogee engine\|LAM]].<ref name=":0" />		'''Propulsion:''' [[Monomethylhydrazine\|MMH]]/[[Mixed oxides of nitrogen\|MON3]] based bipropellant system with 12×22N [[Spacecraft attitude control\|Attitude control]] thrusters and one 440N [[Liquid apogee engine\|LAM]].<ref name=":0" />

	'''Orbit:''' [[Geosynchronous orbit]] at 129.5° East longitude with 5° inclination.<ref name="Spec" /><ref>{{cite web \| url=~~http~~://indiatoday~~.intoday~~.in/story/indias-own-navigation-satellite-irnss-1g-launched-all-you-need-to-know-about-it~~/1/653698.html~~ \| title=India's own navigation satellite IRNSS-1G launched: All you need to know about it \| work=[[India Today]] \| date=28 April 2016 \| access-date=28 April 2016 \| author=Sangeeta Ojha}}</ref>		'''Orbit:''' [[Geosynchronous orbit]] at 129.5° East longitude with 5° inclination.<ref name="Spec" /><ref>{{cite web \| url=https://www.indiatoday.in/india/story/indias-own-navigation-satellite-irnss-1g-launched-all-you-need-to-know-about-it-320437-2016-04-28 \| title=India's own navigation satellite IRNSS-1G launched: All you need to know about it \| work=[[India Today]] \| date=28 April 2016 \| access-date=28 April 2016 \| author=Sangeeta Ojha}}</ref>

	'''Cost:''' Approximately {{INRConvert\|125\|c}}.<ref name="Desi">{{cite web \| url=http://economictimes.indiatimes.com/news/science/irnss-desi-gps-to-liberate-india-from-dependence-on-us-russia/articleshow/52058262.cms \| title=IRNSS: Desi GPS to liberate India from dependence on US, Russia \| work=Economic Times \| date=1 May 2016 \| access-date=2 May 2016 \| author=Vanita Srivastava}}</ref>		'''Cost:''' Approximately {{INRConvert\|125\|c}}.<ref name="Desi">{{cite web \| url=http://economictimes.indiatimes.com/news/science/irnss-desi-gps-to-liberate-india-from-dependence-on-us-russia/articleshow/52058262.cms \| title=IRNSS: Desi GPS to liberate India from dependence on US, Russia \| work=Economic Times \| date=1 May 2016 \| access-date=2 May 2016 \| author=Vanita Srivastava}}</ref>
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	==See also==		==See also==
			{{Portal\|Spaceflight\|India}}
	* [[Communication-Centric Intelligence Satellite\|Communication-Centric Intelligence Satellite (CCI-Sat)]]		* [[Communication-Centric Intelligence Satellite\|Communication-Centric Intelligence Satellite (CCI-Sat)]]
	* [[GPS-aided geo-augmented navigation\|GPS-aided geo-augmented navigation (GAGAN)]]		* [[GPS-aided geo-augmented navigation\|GPS-aided geo-augmented navigation (GAGAN)]]

CleanupBot II: Removed empty portal template using script

2023-08-14T01:32:19Z

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	==See also==		==See also==
	~~{{Portal\|Spaceflight\|India}}~~
	* [[Communication-Centric Intelligence Satellite\|Communication-Centric Intelligence Satellite (CCI-Sat)]]		* [[Communication-Centric Intelligence Satellite\|Communication-Centric Intelligence Satellite (CCI-Sat)]]
	* [[GPS-aided geo-augmented navigation\|GPS-aided geo-augmented navigation (GAGAN)]]		* [[GPS-aided geo-augmented navigation\|GPS-aided geo-augmented navigation (GAGAN)]]

UpdateBot at 17:12, 1 November 2021

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← Older revision		Revision as of 22:42, 1 November 2021
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	}}		}}

	'''~~GISIS~~''' was the seventh and final<ref name="Launch" /> of the [[Indian Regional Navigation Satellite System]] (IRNSS) series of satellites after [[IRNSS-1A]], [[IRNSS-1B]], [[IRNSS-1C]], [[IRNSS-1D]], [[IRNSS-1E]] and [[IRNSS-1F]]. This system of satellites will provide navigational services to the Indian region. The satellite was ~~placed in geosynchronous orbit~~ successfully on April ~~28,~~ 2016 at 12:~~50–pm [[Indian Standard Time~~\|~~IST]]~~.<ref name="~~Launch~~" />		'''IRNSS-1G''' was the seventh and final<ref name="Launch" /> of the [[Indian Regional Navigation Satellite System]] (IRNSS) series of satellites after [[IRNSS-1A]], [[IRNSS-1B]], [[IRNSS-1C]], [[IRNSS-1D]], [[IRNSS-1E]] and [[IRNSS-1F]]. This system of satellites will provide navigational services to the Indian region. The satellite was launched successfully on 28 April 2016 at 07:20 UTC.<ref name="Launch" />

			IRNSS-1G along IRNSS-1A is being used only for NavIC's short message broadcast service and not for navigation.<ref name=":11">{{cite web\|title=Annual Report 2019-20\|url=https://www.isro.gov.in/sites/default/files/flipping_book/annual_report_2019-20_english/index.html#50\|access-date=5 March 2020\|publisher=Department of Space}}</ref><ref name="ar-2021">{{cite web\|title=ANNUAL REPORT 2020-2021\|url=https://www.isro.gov.in/sites/default/files/anual_report_2020-2021_english.pdf\|access-date=6 March 2021\|publisher=ISRO}}</ref>

	== Launch ==		== Launch ==
	The satellite was launched from the [[Satish Dhawan Space Centre First Launch Pad\|First Launch Pad (FLP)]] of [[Satish Dhawan Space Centre]], [[Sriharikota]] on board [[Polar Satellite Launch Vehicle\|PSLV-C33]].<ref name="Launch">{{Cite news\|url =http://www.thehindu.com/sci-tech/science/irnss-launch-indias-own-regional-navigation-satellite-system-takes-shape/article8531388.ece\|title = India launches seventh navigation satellite, to get its own GPS \|date = April 28, 2016\|work = The Hindu\|access-date = April 28, 2016}}</ref> The countdown of the launch had begun 51:30 hours before at 9:20 ~~a.m.~~ IST on 25 April.<ref name="countdown" />		The satellite was launched from the [[Satish Dhawan Space Centre First Launch Pad\|First Launch Pad (FLP)]] of [[Satish Dhawan Space Centre]], [[Sriharikota]] on board [[Polar Satellite Launch Vehicle\|PSLV-C33]] XL on 28 April 2016 at 12:50 PM [[Indian Standard Time\|IST]].<ref name="Launch">{{Cite news\|url =http://www.thehindu.com/sci-tech/science/irnss-launch-indias-own-regional-navigation-satellite-system-takes-shape/article8531388.ece\|title = India launches seventh navigation satellite, to get its own GPS \|date = April 28, 2016\|work = The Hindu\|access-date = April 28, 2016}}</ref><ref>{{cite web\|title=PSLV-C33/IRNSS-1G\|url=http://www.isro.gov.in/launcher/pslv-c33-irnss-1g\|access-date=28 April 2016\|publisher=ISRO}}</ref> The countdown of the launch had begun 51:30 hours before at 9:20 AM IST on 25 April 2016.<ref name="countdown" />

	After the launch of IRNSS-1G the Indian government named the IRNSS system as NAVIC (Navigation ~~Indian Constellation)~~.		After the launch of IRNSS-1G the Indian government named the IRNSS system as NAVIC ('''Nav'''igation with '''I'''ndian '''C'''onstellation).<ref>{{Cite web\|title=PSLV-C33 Successfully Launches India's Seventh Navigation Satellite IRNSS-1G - ISRO\|url=https://www.isro.gov.in/update/28-apr-2016/pslv-c33-successfully-launches-indias-seventh-navigation-satellite-irnss-1g\|access-date=2021-11-01\|website=www.isro.gov.in}}</ref>

	== Specifications ==		== Specifications ==
	~~The satellite is designed for~~ 12 years ~~of life~~.<ref name="countdown">{{cite web \| url=http://www.thehindubusinessline.com/news/science/countdown-for-irnss1g-launch-begins-at-sriharikota/article8523638.ece \| title=Countdown for IRNSS-1G launch begins at Sriharikota \| work=[[The Hindu]] \| date=26 April 2016 \| access-date=28 April 2016 \| author=PTI}}</ref> ~~It has a lift~~-off mass of {{Convert\|1425\|kg}} ~~and dry~~ mass of {{Convert\|598\|kg}}.<ref name=		'''Mission life:''' 12 years (planned).<ref name="countdown">{{cite web \| url=http://www.thehindubusinessline.com/news/science/countdown-for-irnss1g-launch-begins-at-sriharikota/article8523638.ece \| title=Countdown for IRNSS-1G launch begins at Sriharikota \| work=[[The Hindu]] \| date=26 April 2016 \| access-date=28 April 2016 \| author=PTI}}</ref>
	"Spec">{{cite web \| url=http://www.isro.gov.in/sites/default/files/pslv-c33_brochure.pdf \| title=PSLV-C33 - IRNSS-1G Specifications \| publisher=ISRO \| access-date=28 April 2016}}</ref> ~~The~~ ranging payload ~~of IRNSS-1G consists of a~~ C-band ~~transponder~~ (~~automatic receivers and transmitters of radio signals~~) ~~which facilitates accurate determination of the range of the satellite~~.<ref>{{Cite news\|url =http://www.business-standard.com/article/current-affairs/isro-launches-rocket-carrying-india-s-seventh-navigation-satellite-116042800308_1.html\|title = 'Isro launches rocket carrying India's seventh navigation satellite'\|date = April 28, 2016\|work = Business Standard\|access-date = April 28, 2016}}</ref> ~~It would operate~~ in [[L band\|L-5]] and [[S band]] spectrums and ~~also has a~~ [[Rubidium atomic clock]].<ref>{{cite web \| url=http://www.isro.gov.in/Spacecraft/irnss-1g \| title=IRNSS-1G \| work=ISRO \| access-date=28 April 2016}}</ref> ~~Special thermal control systems are used for key components like this clock.~~ Two panels ~~of solar cells are used~~ to generate 1660W of energy and one Lithium-ion 90A-hr battery is used.<ref name="Spec"/> ~~The satellite is placed in an orbit at an altitude~~ of ~~{{convert~~\|~~35788~~.~~5\|km}}~~ at 129.~~5 deg~~ East longitude.<ref name="Spec"/><ref>{{cite web \| url=http://indiatoday.intoday.in/story/indias-own-navigation-satellite-irnss-1g-launched-all-you-need-to-know-about-it/1/653698.html \| title=India's own navigation satellite IRNSS-1G launched: All you need to know about it \| work=[[India Today]] \| date=28 April 2016 \| access-date=28 April 2016 \| author=Sangeeta Ojha}}</ref> It cost approximately {{INRConvert\|125\|c}}.<ref name="Desi">{{cite web \| url=http://economictimes.indiatimes.com/news/science/irnss-desi-gps-to-liberate-india-from-dependence-on-us-russia/articleshow/52058262.cms \| title=IRNSS: Desi GPS to liberate India from dependence on US, Russia \| work=Economic Times \| date=1 May 2016 \| access-date=2 May 2016 \| author=Vanita Srivastava}}</ref>
			'''Lift-off mass:'''{{Convert\|1425\|kg}}

			'''Dry mass:''' {{Convert\|598\|kg}}.<ref name="Spec">{{cite web \| url=http://www.isro.gov.in/sites/default/files/pslv-c33_brochure.pdf \| title=PSLV-C33 - IRNSS-1G Specifications \| publisher=ISRO \| access-date=28 April 2016}}</ref>

			'''Payload:''' [[Code-division multiple access\|CDMA]] ranging payload in [[C band (IEEE)\|C band]].<ref>{{Cite news\|url =http://www.business-standard.com/article/current-affairs/isro-launches-rocket-carrying-india-s-seventh-navigation-satellite-116042800308_1.html\|title = 'Isro launches rocket carrying India's seventh navigation satellite'\|date = April 28, 2016\|work = Business Standard\|access-date = April 28, 2016}}</ref><ref name=":0">{{Cite web\|title=SALIENT FEATURES OF IRNSS 1G\|url=https://www.ursc.gov.in/navigation/html/irnss-1g.jsp\|access-date=2021-11-01\|website=www.ursc.gov.in}}</ref> Navigation payload in [[L band\|L-5]] and [[S band]] spectrums and [[Rubidium atomic clock\|Rubidium atomic clocks]].<ref>{{cite web \| url=http://www.isro.gov.in/Spacecraft/irnss-1g \| title=IRNSS-1G \| work=ISRO \| access-date=28 April 2016}}</ref>

			'''Power:''' Two [[Multi-junction solar cell\|triple-junction solar panels]] to generate 1660W of energy and one Lithium-ion 90A-hr battery is used.<ref name="Spec" />

			'''Propulsion:''' [[Monomethylhydrazine\|MMH]]/[[Mixed oxides of nitrogen\|MON3]] based bipropellant system with 12×22N [[Attitude control]] thrusters and one 440N [[Liquid apogee engine\|LAM]].<ref name=":0" />

			'''Orbit:''' [[Geosynchronous orbit]] at 129.5° East longitude with 5° inclination.<ref name="Spec" /><ref>{{cite web \| url=http://indiatoday.intoday.in/story/indias-own-navigation-satellite-irnss-1g-launched-all-you-need-to-know-about-it/1/653698.html \| title=India's own navigation satellite IRNSS-1G launched: All you need to know about it \| work=[[India Today]] \| date=28 April 2016 \| access-date=28 April 2016 \| author=Sangeeta Ojha}}</ref>

	~~The "XL" version of PSLV was used with six strap-ons for the launch. Each strap-on used~~ {{~~convert~~\|12\|MT}} ~~of propellant. ISRO has successfully used PSLV 34 times and the XL version 12 times before the launch of IRNSS-1G~~.<ref>{{cite web \| url=http://~~www~~.~~isro~~.~~gov.in~~/~~launcher~~/~~pslv~~-~~c33~~-~~irnss~~-1g \| title=~~PSLV-C33/~~IRNSS~~-1G~~ \| ~~publisher~~=~~ISRO~~ \| access-date=~~28 April~~ 2016}}</ref>		'''Cost:''' Approximately {{INRConvert\|125\|c}}.<ref name="Desi">{{cite web \| url=http://economictimes.indiatimes.com/news/science/irnss-desi-gps-to-liberate-india-from-dependence-on-us-russia/articleshow/52058262.cms \| title=IRNSS: Desi GPS to liberate India from dependence on US, Russia \| work=Economic Times \| date=1 May 2016 \| access-date=2 May 2016 \| author=Vanita Srivastava}}</ref>

	{{multiple image		{{multiple image
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	\| image5 = Animation of IRNSS orbit - Earth fixed - polar view.gif		\| image5 = Animation of IRNSS orbit - Earth fixed - polar view.gif
	\| caption5 = [[ECEF\|Earth fixed frame]] - Polar view		\| caption5 = [[ECEF\|Earth fixed frame]] - Polar view
	\| footer = {{legend2\| RoyalBlue \| Earth}}{{·}}{{legend2\| magenta \|[[IRNSS-1B]] }}{{·}}{{legend2\| lime \|[[IRNSS-1C]] }}{{·}}{{legend2\| Cyan \|[[IRNSS-1E]] }}{{·}}{{legend2\|Gold\|[[IRNSS-1F]] }}{{·}}{{legend2\| OrangeRed\|[[IRNSS-1G]] }}{{·}}{{legend2\| Red\|[[IRNSS-1I]]}}		\| footer = {{legend2\| RoyalBlue \| Earth}}{{·}}{{legend2\| magenta \|[[IRNSS-1B]] }}{{·}}{{legend2\| lime \|[[IRNSS-1C]] }}{{·}}{{legend2\| Cyan \|[[IRNSS-1E]] }}{{·}}{{legend2\|Gold\|[[IRNSS-1F]] }}{{·}}{{legend2\| OrangeRed\|IRNSS-1G }}{{·}}{{legend2\| Red\|[[IRNSS-1I]]}}
	}}		}}
	{{clear}}		{{clear}}

>Niterurea: Added photo

2021-07-08T06:06:33Z

Added photo

New page

{{use dmy dates|date=January 2014}}
{{use Indian English|date=January 2014}}
{{Infobox spaceflight
| name = PSLV-C33/IRNSS-1G
| image = IRNSS Series 1.jpg
| image_caption =
| mission_type = [[Satellite navigation|Navigation]]
| operator = [[ISRO]]
| website =
| COSPAR_ID =
| SATCAT = 41469
| mission_duration = 12 years


| spacecraft = IRNSS-1G
| spacecraft_type = Satellite
| spacecraft_bus = [[I-1K]]
| manufacturer = [[Indian Space Research Organisation Satellite Centre|ISRO Satellite Centre]]<br />[[Space Applications Centre]]
| dry_mass = {{convert|598|kg|lb}}
| launch_mass = {{convert|1425|kg|lb}}
| power = 1600 W


| launch_date = {{start date|2016|04|28|12|50|00|7=UTC+05:30}}
| launch_rocket = [[Polar Satellite Launch Vehicle|PSLV-XL]] C33
| launch_site = [[Satish Dhawan Space Centre|Satish Dhawan]] ([[Satish Dhawan Space Centre First Launch Pad|First]])
| launch_contractor = [[Indian Space Research Organisation|ISRO]]


| disposal_type =
| deactivated =
| last_contact =
| decay_date =


| orbit_epoch = 17151.68965311
| orbit_reference = [[geocentric orbit|Geocentric]]
| orbit_regime = Geosynchronous Orbit (GSO)
| orbit_periapsis = {{convert|35780.961|km|abbr=on}}<ref name=
"TLE">{{cite web | url=http://www.celestrak.com/cgi-bin/TLE.pl?CATNR=41469 | title=NORAD Catalog Number 41469 | publisher=NORAD | access-date=2 June 2017}}</ref>
| orbit_apoapsis = {{convert|35796.200|km|abbr=on}}<ref name=
"TLE" />
| orbit_inclination = 4.2637
| orbit_period = 23:56:12.33
| orbit_longitude = 129.429213 East
| apsis = gee

| programme = [[Polar Satellite Launch Vehicle]]
| previous_mission = [[PSLV-C32]]
| next_mission = [[PSLV-C34]]

}}

'''GISIS''' was the seventh and final<ref name="Launch" /> of the [[Indian Regional Navigation Satellite System]] (IRNSS) series of satellites after [[IRNSS-1A]], [[IRNSS-1B]], [[IRNSS-1C]], [[IRNSS-1D]], [[IRNSS-1E]] and [[IRNSS-1F]]. This system of satellites will provide navigational services to the Indian region. The satellite was placed in geosynchronous orbit successfully on April 28, 2016 at 12:50–pm [[Indian Standard Time|IST]].<ref name="Launch" />

== Launch ==
The satellite was launched from the [[Satish Dhawan Space Centre First Launch Pad|First Launch Pad (FLP)]] of [[Satish Dhawan Space Centre]], [[Sriharikota]] on board [[Polar Satellite Launch Vehicle|PSLV-C33]].<ref name="Launch">{{Cite news|url =http://www.thehindu.com/sci-tech/science/irnss-launch-indias-own-regional-navigation-satellite-system-takes-shape/article8531388.ece|title = India launches seventh navigation satellite, to get its own GPS |date = April 28, 2016|work = The Hindu|access-date = April 28, 2016}}</ref> The countdown of the launch had begun 51:30 hours before at 9:20 a.m. IST on 25 April.<ref name="countdown" />

After the launch of IRNSS-1G the Indian government named the IRNSS system as NAVIC (Navigation Indian Constellation).

== Specifications ==
The satellite is designed for 12 years of life.<ref name="countdown">{{cite web | url=http://www.thehindubusinessline.com/news/science/countdown-for-irnss1g-launch-begins-at-sriharikota/article8523638.ece | title=Countdown for IRNSS-1G launch begins at Sriharikota | work=[[The Hindu]] | date=26 April 2016 | access-date=28 April 2016 | author=PTI}}</ref> It has a lift-off mass of {{Convert|1425|kg}} and dry mass of {{Convert|598|kg}}.<ref name=
"Spec">{{cite web | url=http://www.isro.gov.in/sites/default/files/pslv-c33_brochure.pdf | title=PSLV-C33 - IRNSS-1G Specifications | publisher=ISRO | access-date=28 April 2016}}</ref> The ranging payload of IRNSS-1G consists of a C-band transponder (automatic receivers and transmitters of radio signals) which facilitates accurate determination of the range of the satellite.<ref>{{Cite news|url =http://www.business-standard.com/article/current-affairs/isro-launches-rocket-carrying-india-s-seventh-navigation-satellite-116042800308_1.html|title = 'Isro launches rocket carrying India's seventh navigation satellite'|date = April 28, 2016|work = Business Standard|access-date = April 28, 2016}}</ref> It would operate in [[L band|L-5]] and [[S band]] spectrums and also has a [[Rubidium atomic clock]].<ref>{{cite web | url=http://www.isro.gov.in/Spacecraft/irnss-1g | title=IRNSS-1G | work=ISRO | access-date=28 April 2016}}</ref> Special thermal control systems are used for key components like this clock. Two panels of solar cells are used to generate 1660W of energy and one Lithium-ion 90A-hr battery is used.<ref name="Spec"/> The satellite is placed in an orbit at an altitude of {{convert|35788.5|km}} at 129.5 deg East longitude.<ref name="Spec"/><ref>{{cite web | url=http://indiatoday.intoday.in/story/indias-own-navigation-satellite-irnss-1g-launched-all-you-need-to-know-about-it/1/653698.html | title=India's own navigation satellite IRNSS-1G launched: All you need to know about it | work=[[India Today]] | date=28 April 2016 | access-date=28 April 2016 | author=Sangeeta Ojha}}</ref> It cost approximately {{INRConvert|125|c}}.<ref name="Desi">{{cite web | url=http://economictimes.indiatimes.com/news/science/irnss-desi-gps-to-liberate-india-from-dependence-on-us-russia/articleshow/52058262.cms | title=IRNSS: Desi GPS to liberate India from dependence on US, Russia | work=Economic Times | date=1 May 2016 | access-date=2 May 2016 | author=Vanita Srivastava}}</ref>

The "XL" version of PSLV was used with six strap-ons for the launch. Each strap-on used {{convert|12|MT}} of propellant. ISRO has successfully used PSLV 34 times and the XL version 12 times before the launch of IRNSS-1G.<ref>{{cite web | url=http://www.isro.gov.in/launcher/pslv-c33-irnss-1g | title=PSLV-C33/IRNSS-1G | publisher=ISRO | access-date=28 April 2016}}</ref>

{{multiple image
| align = left
| direction = horizontal
| width = 200
| header = Animation of IRNSS
| image1 = Animation of IRNSS orbit around Earth.gif
| caption1 = Around the Earth
| image2 = Animation of IRNSS orbit around Earth - Polar view.gif
| caption2 = Around the Earth - Polar view
| image3 = Animation of IRNSS orbit - Earth fixed - front view.gif
| caption3 = [[ECEF|Earth fixed frame]] - Equatorial view, front
| image4 = Animation of IRNSS orbit - Earth fixed - side view.gif
| caption4 = [[ECEF|Earth fixed frame]] - Equatorial view, side
| image5 = Animation of IRNSS orbit - Earth fixed - polar view.gif
| caption5 = [[ECEF|Earth fixed frame]] - Polar view
| footer = {{legend2| RoyalBlue | Earth}}{{·}}{{legend2| magenta |[[IRNSS-1B]] }}{{·}}{{legend2| lime |[[IRNSS-1C]] }}{{·}}{{legend2| Cyan |[[IRNSS-1E]] }}{{·}}{{legend2|Gold|[[IRNSS-1F]] }}{{·}}{{legend2| OrangeRed|[[IRNSS-1G]] }}{{·}}{{legend2| Red|[[IRNSS-1I]]}}
}}
{{clear}}

==See also==
{{Portal|Spaceflight|India}}
* [[Communication-Centric Intelligence Satellite|Communication-Centric Intelligence Satellite (CCI-Sat)]]
* [[GPS-aided geo-augmented navigation|GPS-aided geo-augmented navigation (GAGAN)]]
* [[Satellite navigation]]

== References ==
{{reflist|30em}}

== External links ==
* [http://www.isro.org/scripts/futureprogramme.aspx ISRO Future Programmes]

{{IRNSS satellites}}
{{Indian spacecraft}}
{{Orbital launches in 2016}}

[[Category:Spacecraft launched by India in 2016]]
[[Category:IRNSS satellites]]
[[Category:Spacecraft launched by PSLV rockets]]