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Spektr-RG (SXG)

Spektr-RG [Lavochkin]

The Spektr-RG or Spectrum-XG (SXG) is a Russian-German observatory-class mission. The observatory is intended to study the interplanetary magnetic field, galaxies and black holes. It will carry a complement of five telescopes spanning the energy range from the far ultraviolet to the hard X-ray, plus an all-sky monitor.

The mission is a revived, redesigned version of the earlier Spektr-RG (SXG) mission cancelled in 2002. The development of this new mission was started in 2005.

The payload consists of:

  • eROSITA (Extended Röntgen Survey with an Imaging Telescope Array) Wolter telescopes provided by the Max Planck Institute for Extraterrestrial Physics (Germany)
  • ART-XC Coded-mask telescopes provided by IKI/VNIIEF (Russia)

SXG will be in a halo orbit around the Lagrange point L-2. The mission will spend 3 months flight to L2 including verification and calibration phases, then 4 years performing an all sky survey (8 × ½ year) and finally 3.5 years pointed observations.

The satellite will be based on Lavochkin's Navigator bus and was to be launched on a Zenit-3F combination. The launch was originally to take place in 2013, but was delayed to late 2016 or early 2017. Due to the delays, a switch to a Proton-M Blok-DM-03 booster was done.

Nation: Russia, Germany
Type / Application: Astronomy, X-Ray
Contractors: Lavochkin
Equipment: eROSITA, ART-XC
Configuration: Navigator-Bus
Power: 2 deployable solar arrays, batteries
Lifetime: 7.5 years
Mass: 2647 kg (launch); 2267 kg (dry)
Orbit: L-2 Orbit
Satellite COSPAR Date LS Launch Vehicle Remarks
Spektr-XG (SXG) - 2017 Ba Proton-M Blok-DM-03