Created by DarellBabcock5
Last edited January 21, 2026


Template:Infobox spaceflight

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

IRNSS-1G along IRNSS-1A is being used only for NavIC's short message broadcast service and not for navigation.[2][3]

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.[1][4] The countdown of the launch had begun 51:30 hours before at 9:20 AM IST on 25 April 2016.[5]

After the launch of IRNSS-1G the Indian government named the IRNSS system as NAVIC (Navigation with Indian Constellation).[6]

Specifications

Mission life: 12 years (planned).[5]

Lift-off mass:Template:Convert

Dry mass: Template:Convert.[7]

Payload: CDMA ranging payload in C band.[8][9] Navigation payload in L-5 and S band spectrums and Rubidium atomic clocks.[10]

Power: Two triple-junction solar panels to generate 1660W of energy and one Lithium-ion 90A-hr battery is used.[7]

Propulsion: MMH/MON3 based bipropellant system with 12×22N Attitude control thrusters and one 440N LAM.[9]

Orbit: Geosynchronous orbit at 129.5° East longitude with 5° inclination.[7][11]

Cost: Approximately Template:INRConvert.[12]

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See also

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References

  1. 1.0 1.1 1.2 India launches seventh navigation satellite, to get its own GPS. The Hindu(April 28, 2016). Retrieved April 28, 2016.
  2. Annual Report 2019-20. Department of Space. Retrieved 5 March 2020.
  3. ANNUAL REPORT 2020-2021. ISRO. Retrieved 6 March 2021.
  4. PSLV-C33/IRNSS-1G. ISRO. Retrieved 28 April 2016.
  5. 5.0 5.1 Countdown for IRNSS-1G launch begins at Sriharikota(26 April 2016). Retrieved 28 April 2016.
  6. PSLV-C33 Successfully Launches India's Seventh Navigation Satellite IRNSS-1G - ISRO. www.isro.gov.in. Retrieved 2021-11-01.
  7. 7.0 7.1 7.2 PSLV-C33 - IRNSS-1G Specifications. ISRO. Retrieved 28 April 2016.
  8. 'Isro launches rocket carrying India's seventh navigation satellite'. Business Standard(April 28, 2016). Retrieved April 28, 2016.
  9. 9.0 9.1 SALIENT FEATURES OF IRNSS 1G. www.ursc.gov.in. Retrieved 2021-11-01.
  10. IRNSS-1G. Retrieved 28 April 2016.
  11. India's own navigation satellite IRNSS-1G launched: All you need to know about it(28 April 2016). Retrieved 28 April 2016.
  12. IRNSS: Desi GPS to liberate India from dependence on US, Russia(1 May 2016). Retrieved 2 May 2016.

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