Aditya (satellite)

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Aditya L-1
Mission type Solar research
Spacecraft properties
Launch mass 400 kilograms (880 lb)
Start of mission
Launch date 2017-18[1]
Rocket PSLV[2]
Launch site Satish Dhawan Space Centre
Contractor ISRO
Orbital parameters
Reference system Geocentric
Regime Lagrangian point-1
Epoch Planned

Aditya (Sanskrit: आदित्य, lit: Sun,[3] About this sound pronunciation ) or Aditya-1 is a spacecraft whose mission is to study the Sun. It was conceptualised by the Advisory Committee for Space Research in January 2008.[2] It has been designed[4] and will be built and launched by the Indian Space Research Organisation (ISRO).[2] Former ISRO chairman G. Madhavan Nair announced the approval of this mission on 10 November 2008.[5]


Aditya was proposed to be sent to space by 2015–16 to study the solar corona.[6] This part of the Sun has temperatures of over one million degrees, with raging solar winds that reach a velocity of up to 1000 km a second. The satellite will carry as its payload an advanced solar coronagraph.[2][7] Due to confidence in handling multiple payloads after the Mars Orbiter Mission, ISRO now plans to launch the craft in 2017-18, and it will carry multiple payloads for better solar data collection. The extra payloads will include an ultraviolet imager telescope to observe the entire solar disc for solar storms, a high energy x-ray imager to scan smaller region of the solar disc to study flares, a wind particle detector to sample the solar wind, a soft x-ray spectrometer and a variable emission coronagraph.[1]

It will be a small 400 kilograms (882 lb) satellite, which was initially projected to cost about 50 crore (US$10 million),[2] but due to an upgraded mission profile, it is estimated to cost 100 crore (US$10 million).[1] It is likely to be placed into a near earth orbit of 800 km.[8] The spacecraft's mission will be to study the fundamental problems of coronal heating, and other phenomena that take place in the Earth's magnetosphere.


  • to study the Coronal Mass Ejection (CME)
  • to study the crucial physical parameters for space weather such as the coronal magnetic field structures, evolution of the coronal magnetic field etc.[9]


This is one of the first scheduled projects in a road map formulated by the Advisory Committee for Space Research.[2] A working group of individuals from the ISRO Satellite Centre, Udaipur Solar Observatory, Indian Institute of Astrophysics, Radio Astronomy Centre, National Centre for Radio Astrophysics, and several universities.[2] was constituted to work out the optimum configuration for the coronagraph, among other parameters. The design of solar coronograph has been completed by Indian Institute of Astrophysics.[10]

ISRO is working on development of sensors and thermal structures of the satellite after which a prototype of the satellite is expected to be built by 2011.[10] Aditya's launch date has been rescheduled to 2017-18, after the mission was upgraded from a single payload mission to a multiple payload mission.[1]

Recently ISRO is planning to position this satellite at Lagrangian point L1. "We will be going to a point 1.5 million kilometres away from Earth, from which we will observe the sun constantly," says Annadurai. "Technically, this is a very challenging mission. Normally, any satellite will go around a mother planet but this will be at a point where the gravity of the sun and the Earth will play a role to keep the satellite in place," he says.[11]


  1. ^ a b c d Sharma, Richa (22 December 2013). "After Mars, India to Secure Place on Sun". The New Indian Express. Retrieved 24 December 2013. 
  2. ^ a b c d e f g "ISRO planning to launch satellite to study the sun". The Hindu. 13 January 2008. Retrieved 10 November 2008. 
  3. ^ "Aditya". Spoken Sanskrit. Retrieved 14 November 2008. 
  4. ^ "After Chandrayaan-1's moon voyage, ISRO's Aditya to scout sun's surf". United News of India. 11 November 2008. Retrieved 14 November 2008. [dead link]
  5. ^ "ISRO to develop Sun mission 'Aditya'". Zee News. 10 November 2008. Retrieved 11 November 2008. 
  6. ^ Aditya 1 launch delayed to 2015-16 Times of India Retrieved 9 September 2012
  7. ^ Srinivas Laxman & Rhik Kundu, TNN (9 September 2012). "Aditya 1 launch delayed to 2015–16". The Times of India. Bennett, Coleman & Co. Ltd. 
  8. ^ "Mission". Retrieved 4 January 2014. 
  9. ^ "Aditya-1 mission". Retrieved 28 December 2014. 
  10. ^ a b Design of space-based solar chronograph ready New Indian Express. Retrieved on 22 September 2010.
  11. ^