IRNSS-1G
{{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 = Navigation
| operator = ISRO
| website =
| COSPAR_ID =
| SATCAT = 41469
| mission_duration = 12 years
| spacecraft = IRNSS-1G
| spacecraft_type = Satellite
| spacecraft_bus = I-1K
| manufacturer = ISRO Satellite Centre
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=+05:30}}
| launch_rocket = PSLV-XL C33
| launch_site = Satish Dhawan (First)
| launch_contractor = ISRO
| disposal_type =
| deactivated =
| last_contact =
| decay_date =
| orbit_epoch = 17151.68965311
| orbit_reference = Geocentric
| orbit_regime = Geosynchronous Orbit (GSO)
| orbit_periapsis = {{convert|35780.961|km|abbr=on}}
"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}}
| orbit_apoapsis = {{convert|35796.200|km|abbr=on}}
"TLE" /> | orbit_inclination = 4.2637 | orbit_period = 23:56:12.33 | orbit_longitude = 129.429213 East | apsis = gee | programme = NavIC | previous_mission = IRNSS-1F | next_mission = IRNSS-1H }} IRNSS-1G was the seventh and final 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. IRNSS-1G along IRNSS-1A is being used only for NavIC's short message broadcast service and not for navigation.{{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}}{{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}}
Launch
The satellite was launched from the First Launch Pad (FLP) of Satish Dhawan Space Centre, Sriharikota on board PSLV-C33 XL on 28 April 2016 at 12:50 PM IST.{{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}}{{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}} The countdown of the launch had begun 51:30 hours before at 9:20 AM IST on 25 April 2016.
After the launch of IRNSS-1G the Indian government named the IRNSS system as NAVIC (Navigation with Indian Constellation).{{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}}
Specifications
Mission life: 12 years (planned).{{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}}
Lift-off mass:{{Convert|1425|kg}}
Payload: CDMA ranging payload in C band.{{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}}{{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}} Navigation payload in L-5 and S band spectrums and Rubidium atomic clocks.{{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 }}
Power: Two triple-junction solar panels to generate 1660W of energy and one Lithium-ion 90A-hr battery is used.
Propulsion: MMH/MON3 based bipropellant system with 12×22N Attitude control thrusters and one 440N LAM.
Orbit: Geosynchronous orbit at 129.5° East longitude with 5° inclination.{{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}}
Cost: Approximately {{INRConvert|125|c}}.{{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}}
{{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 = Earth fixed frame - Equatorial view, front
| image4 = Animation of IRNSS orbit - Earth fixed - side view.gif
| caption4 = Earth fixed frame - Equatorial view, side
| image5 = Animation of IRNSS orbit - Earth fixed - polar view.gif
| caption5 = 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}}
}}
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See also
{{Portal|Spaceflight|India}}
References
{{reflist|30em}}
External links
- [http://www.isro.org/scripts/futureprogramme.aspx ISRO Future Programmes]
{{IRNSS satellites}}
{{Indian spacecraft}}
{{Orbital launches in 2016}}