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IRNSS-1G - Revision history
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<p></p>
<p><b>New page</b></p><div>{{Short description|Indian navigation satellite}}<br />
{{use dmy dates|date=January 2014}}<br />
{{use Indian English|date=January 2014}}<br />
{{Infobox spaceflight<br />
| name = IRNSS-1G<br />
| image = IRNSS Series 1.jpg<br />
| image_caption = <br />
| mission_type = [[Satellite navigation|Navigation]]<br />
| operator = [[ISRO]]<br />
| website =<br />
| COSPAR_ID = <br />
| SATCAT = 41469<br />
| mission_duration = Planned: 12 years<br />Elapsed: {{time interval|28 April 2016|show=ymd|sep=,}} <br />
<br />
<!--Spacecraft properties--><br />
| spacecraft = IRNSS-1G<br />
| spacecraft_type = Satellite<br />
| spacecraft_bus = [[I-1K]]<br />
| manufacturer = [[Indian Space Research Organisation Satellite Centre|ISRO Satellite Centre]]<br />[[Space Applications Centre]]<br />
| dry_mass = {{convert|598|kg|lb}}<br />
| launch_mass = {{convert|1425|kg|lb}}<br />
| power = 1600 W<br />
<br />
<!--Launch details--><br />
| launch_date = {{start date|2016|04|28|12|50|00|7=+05:30}}<br />
| launch_rocket = [[Polar Satellite Launch Vehicle|PSLV-XL]] C33<br />
| launch_site = [[Satish Dhawan Space Centre|Satish Dhawan]] ([[Satish Dhawan Space Centre First Launch Pad|First]])<br />
| launch_contractor = [[Indian Space Research Organisation|ISRO]]<br />
<br />
<!--end of mission--><br />
| disposal_type =<br />
| deactivated =<br />
| last_contact =<br />
| decay_date =<br />
<br />
<!--orbit parameters--><br />
| orbit_epoch = 17151.68965311<br />
| orbit_reference = [[geocentric orbit|Geocentric]]<br />
| orbit_regime = Geosynchronous Orbit (GSO)<br />
| orbit_periapsis = {{convert|35780.961|km|abbr=on}}<ref name=<br />
"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><br />
| orbit_apoapsis = {{convert|35796.200|km|abbr=on}}<ref name=<br />
"TLE" /><br />
| orbit_inclination = 4.2637<br />
| orbit_period = 23:56:12.33<br />
| orbit_longitude = 129.429213 East<br />
| apsis = gee<br />
<br />
| programme = [[NavIC]]<br />
| previous_mission = [[IRNSS-1F]]<br />
| next_mission = [[IRNSS-1H]]<br />
<br />
}}<br />
<br />
'''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" /><br />
<br />
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><br />
<br />
== Launch ==<br />
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&nbsp;AM IST on 25 April 2016.<ref name="countdown" /><br />
<br />
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><br />
<br />
== Specifications ==<br />
'''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> <br />
<br />
'''Lift-off mass:'''{{Convert|1425|kg}} <br />
<br />
'''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><br />
<br />
'''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> <br />
<br />
'''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" /><br />
<br />
'''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" /><br />
<br />
'''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> <br />
<br />
'''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><br />
<br />
{{multiple image<br />
| align = left<br />
| direction = horizontal<br />
| width = 200<br />
| header = Animation of IRNSS<br />
| image1 = Animation of IRNSS orbit around Earth.gif<br />
| caption1 = Around the Earth<br />
| image2 = Animation of IRNSS orbit around Earth - Polar view.gif<br />
| caption2 = Around the Earth - Polar view<br />
| image3 = Animation of IRNSS orbit - Earth fixed - front view.gif<br />
| caption3 = [[ECEF|Earth fixed frame]] - Equatorial view, front<br />
| image4 = Animation of IRNSS orbit - Earth fixed - side view.gif<br />
| caption4 = [[ECEF|Earth fixed frame]] - Equatorial view, side<br />
| image5 = Animation of IRNSS orbit - Earth fixed - polar view.gif<br />
| caption5 = [[ECEF|Earth fixed frame]] - Polar view<br />
| 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]]}}<br />
}}<br />
{{clear}}<br />
<br />
==See also==<br />
{{Portal|Spaceflight|India}}<br />
* [[Communication-Centric Intelligence Satellite|Communication-Centric Intelligence Satellite (CCI-Sat)]]<br />
* [[GPS-aided geo-augmented navigation|GPS-aided geo-augmented navigation (GAGAN)]]<br />
* [[Satellite navigation]]<br />
<br />
== References ==<br />
{{reflist|30em}}<br />
<br />
== External links ==<br />
* [http://www.isro.org/scripts/futureprogramme.aspx ISRO Future Programmes]<br />
<br />
{{IRNSS satellites}}<br />
{{Indian spacecraft}}<br />
{{Orbital launches in 2016}}<br />
<br />
[[Category:Spacecraft launched by India in 2016]]<br />
[[Category:IRNSS satellites]]<br />
[[Category:Spacecraft launched by PSLV rockets]]</div>
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