To install click the Add extension button. That's it.

The source code for the WIKI 2 extension is being checked by specialists of the Mozilla Foundation, Google, and Apple. You could also do it yourself at any point in time.

Kelly Slayton
Congratulations on this excellent venture… what a great idea!
Alexander Grigorievskiy
I use WIKI 2 every day and almost forgot how the original Wikipedia looks like.
Live Statistics
English Articles
Improved in 24 Hours
Added in 24 Hours
What we do. Every page goes through several hundred of perfecting techniques; in live mode. Quite the same Wikipedia. Just better.

From Wikipedia, the free encyclopedia

IRNSS Series 1.jpg
Mission typeNavigation
COSPAR ID2016-027A
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 placed in geosynchronous orbit successfully on April 28, 2016 at 12:50–pm IST.[2]


The satellite was launched from the First Launch Pad (FLP) of Satish Dhawan Space Centre, Sriharikota on board PSLV-C33.[2] The countdown of the launch had begun 51:30 hours before at 9:20 a.m. IST on 25 April.[3]

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


The satellite is designed for 12 years of life.[3] It has a lift-off mass of 1,425 kilograms (3,142 lb) and dry mass of 598 kilograms (1,318 lb).[4] 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.[5] It would operate in L-5 and S band spectrums and also has a Rubidium atomic clock.[6] 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.[4] The satellite is placed in an orbit at an altitude of 35,788.5 kilometres (22,237.9 mi) at 129.5 deg East longitude.[4][7] It cost approximately 125 crore (US$18 million).[8]

The "XL" version of PSLV was used with six strap-ons for the launch. Each strap-on used 12 metric tons (12 long tons; 13 short tons) of propellant. ISRO has successfully used PSLV 34 times and the XL version 12 times before the launch of IRNSS-1G.[9]

Animation of IRNSS
Around the Earth
Around the Earth - Polar view
Earth fixed frame - Equatorial view, front
Earth fixed frame - Equatorial view, side
   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. ^ a b PTI (26 April 2016). "Countdown for IRNSS-1G launch begins at Sriharikota". The Hindu. Retrieved 28 April 2016.
  4. ^ a b c "PSLV-C33 - IRNSS-1G Specifications" (PDF). ISRO. Retrieved 28 April 2016.
  5. ^ "'Isro launches rocket carrying India's seventh navigation satellite'". Business Standard. 28 April 2016. Retrieved 28 April 2016.
  6. ^ "IRNSS-1G". ISRO. Retrieved 28 April 2016.
  7. ^ 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.
  8. ^ Vanita Srivastava (1 May 2016). "IRNSS: Desi GPS to liberate India from dependence on US, Russia". Economic Times. Retrieved 2 May 2016.
  9. ^ "PSLV-C33/IRNSS-1G". ISRO. Retrieved 28 April 2016.

External links

This page was last edited on 25 August 2021, at 16:04
Basis of this page is in Wikipedia. Text is available under the CC BY-SA 3.0 Unported License. Non-text media are available under their specified licenses. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc. WIKI 2 is an independent company and has no affiliation with Wikimedia Foundation.