IRNSS-1B

IRNSS-1B
Mission type	Navigation
Operator	ISRO
COSPAR ID	2014-017A
SATCAT no.	39635
Website	http://www.isro.org/pslv-c24/mission.aspx
Mission duration	10 years
Spacecraft properties
Bus	I-1K
Manufacturer	ISRO Satellite Centre; Space Applications Centre
Launch mass	1,432 kilograms (3,157 lb)
Power	1,660 watts
Start of mission
Launch date	4 April 2014, 11:44 UTC
Rocket	PSLV-XL C24
Launch site	Satish Dhawan FLP
Contractor	ISRO
Orbital parameters
Reference system	Geocentric
Regime	Geosynchronous
Longitude	55° East
Perigee altitude	35,714 km (22,192 mi)
Apogee altitude	35,870 km (22,290 mi)
Inclination	30.57 degrees
Period	1436.010 minutes
Epoch	25 January 2015, 01:32:48 UTC

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Template:Orbit

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]

Satellite

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.

Launch

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