Mission typeNavigation
COSPAR ID2016-027A Edit this at Wikidata
SATCAT no.41469
Mission duration12 years
Spacecraft properties
Spacecraft typeSatellite
ManufacturerISRO Satellite Centre
Space Applications Centre
Launch mass1,425 kilograms (3,142 lb)
Dry mass598 kilograms (1,318 lb)
Power1600 W
Start of mission
Launch date12:50:00, April 28, 2016 (UTC+05:30) (2016-04-28T12:50:00UTC+05:30)
RocketPSLV-XL C33
Launch siteSatish Dhawan (First)
Orbital parameters
Reference systemGeocentric
RegimeGeosynchronous Orbit (GSO)
Longitude129.429213 East
Perigee altitude35,780.961 km (22,233.258 mi)[1]
Apogee altitude35,796.200 km (22,242.727 mi)[1]

IRNSS-1G was the seventh and final[2] 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.[2]

IRNSS-1G along IRNSS-1A is being used only for NavIC's short message broadcast service and not for navigation.[3][4]


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.[2][5] The countdown of the launch had begun 51:30 hours before at 9:20 AM IST on 25 April 2016.[6]

After the launch of IRNSS-1G the Indian government named the IRNSS system as NAVIC (Navigation with Indian Constellation).[7]


Mission life: 12 years (planned).[6]

Lift-off mass:1,425 kilograms (3,142 lb)

Dry mass: 598 kilograms (1,318 lb).[8]

Payload: CDMA ranging payload in C band.[9][10] Navigation payload in L-5 and S band spectrums and Rubidium atomic clocks.[11]

Power: Two triple-junction solar panels to generate 1660W of energy and one Lithium-ion 90A-hr battery is used.[8]

Propulsion: MMH/MON3 based bipropellant system with 12×22N Attitude control thrusters and one 440N LAM.[10]

Orbit: Geosynchronous orbit at 129.5° East longitude with 5° inclination.[8][12]

Cost: Approximately 125 crore (US$15 million).[13]

Animation of IRNSS
Around the Earth
Around the Earth - Polar view
Earth fixed frame - Equatorial view, front
Earth fixed frame - Equatorial view, side
Earth fixed frame - Polar view
   Earth ·   IRNSS-1B  ·   IRNSS-1C  ·   IRNSS-1E  ·   IRNSS-1F  ·   IRNSS-1G  ·   IRNSS-1I

See also


  1. ^ a b "NORAD Catalog Number 41469". NORAD. Retrieved 2 June 2017.
  2. ^ a b c "India launches seventh navigation satellite, to get its own GPS". The Hindu. 28 April 2016. Retrieved 28 April 2016.
  3. ^ "Annual Report 2019-20". Department of Space. Archived from the original on 6 April 2020. Retrieved 5 March 2020.
  4. ^ "ANNUAL REPORT 2020-2021" (PDF). ISRO. Archived from the original (PDF) on 25 April 2021. Retrieved 6 March 2021.
  5. ^ "PSLV-C33/IRNSS-1G". ISRO. Archived from the original on 28 April 2016. Retrieved 28 April 2016.
  6. ^ a b PTI (26 April 2016). "Countdown for IRNSS-1G launch begins at Sriharikota". The Hindu. Retrieved 28 April 2016.
  7. ^ "PSLV-C33 Successfully Launches India's Seventh Navigation Satellite IRNSS-1G - ISRO". Archived from the original on 1 November 2021. Retrieved 1 November 2021.
  8. ^ a b c "PSLV-C33 - IRNSS-1G Specifications" (PDF). ISRO. Archived from the original (PDF) on 25 April 2016. Retrieved 28 April 2016.
  9. ^ "'Isro launches rocket carrying India's seventh navigation satellite'". Business Standard. 28 April 2016. Retrieved 28 April 2016.
  10. ^ a b "SALIENT FEATURES OF IRNSS 1G". Retrieved 1 November 2021.
  11. ^ "IRNSS-1G". ISRO. Archived from the original on 24 April 2016. Retrieved 28 April 2016.
  12. ^ Sangeeta Ojha (28 April 2016). "India's own navigation satellite IRNSS-1G launched: All you need to know about it". India Today. Retrieved 28 April 2016.
  13. ^ Vanita Srivastava (1 May 2016). "IRNSS: Desi GPS to liberate India from dependence on US, Russia". Economic Times. Retrieved 2 May 2016.