Mission typeNavigation
COSPAR ID2014-017A
SATCAT no.39635
Mission duration10 years
Spacecraft properties
ManufacturerISRO Satellite Centre
Space Applications Centre
Launch mass1,432 kilograms (3,157 lb)
Power1,660 watts
Start of mission
Launch date4 April 2014, 11:44 UTC (2014-04-04UTC11:44Z)
RocketPSLV-XL C24
Launch siteSatish Dhawan FLP
Orbital parameters
Reference systemGeocentric
Longitude55° East
Perigee altitude35,714 km (22,192 mi)[1]
Apogee altitude35,870 km (22,290 mi)[1]
Inclination30.57 degrees[1]
Period1436.010 minutes[1]
Epoch25 January 2015, 01:32:48 UTC[1]

IRNSS-1B is the second out of seven in the Indian Regional Navigation Satellite System (IRNSS) series of satellites after IRNSS-1A.[2] The IRNSS constellation of satellites is slated to be launched to provide navigational services to the region. It was placed in geosynchronous orbit on 4 April 2014.[3][4]


The satellite will help augmenting the satellite based navigation system of India which is currently under development. The navigational system so developed will be a regional one targeted towards South Asia. The satellite will provide navigation, tracking and mapping services.[5]

IRNSS-1B satellite has two payloads: a navigation payload and CDMA ranging payload in addition with a laser retro-reflector. The payload generates navigation signals at L5 and S-band. The design of the payload makes the IRNSS system interoperable and compatible with Global Positioning System (GPS) and Galileo.[3] The satellite is powered by two solar arrays, which generate power up to 1,660 watts, and has a life-time of ten years.


The 1,432 kg satellite was launched on 4 April 2014 at 11:44 UTC (17:14 IST) aboard the PSLV-C24 rocket from Satish Dhawan Space Centre, Sriharikota.[4]

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 c d e "IRNSS 1B Satellite details 2014-017A NORAD 39635". N2YO. 25 January 2015. Retrieved 25 January 2015.
  2. ^ "IRNSS-1B". Indian Space Research Organisation. Retrieved 4 April 2014.
  3. ^ a b "IRNSS". Retrieved 6 December 2014.
  4. ^ a b "ISRO puts India's Navigation satellite IRNSS 1B into orbit". IANS. Retrieved 4 April 2014.
  5. ^ "ISRO: After GSLV launch, PSLV C24 with IRNSS-1B likely in March". India TV News. 5 January 2014. Retrieved 6 January 2014.

External links

  • ISRO Future Programmes
  • Updates