2XMM J083026+524133

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2XMM J083026+524133
Observation data (Epoch J2000)
Right ascension 08h 30m 25.9s
Declination+52° 41′ 32″
See also: Galaxy groups, Galaxy clusters, List of galaxy clusters

2XMM J083026+524133 (2XMM J0830) is a very large galaxy cluster that lies 7.7 billion light-years away. It was discovered by chance by ESA's XMM Newton and the Large Binocular Telescope (LBT) in Arizona in 2008 while it was looking at the quasar APM 08279+5255.[1][2]

As of 2008, it was the largest known galaxy cluster at red shift z ≧ 1, weighing in at an estimated 1015 solar masses. However, galaxy cluster XMMXCS 2215-1738 is several billion light years farther away.[3]


  1. ^ Baldwin, Emily (27 August 2008). "XMM discovers monster galaxy cluster". Astronomy Now.
  2. ^ Lamer, G.; Hoeft, M.; Kohnert, J.; Schwope, A.; Storm, J. (2008). "2XMM J083026+524133: the most X-ray luminous cluster at redshift 1". Astronomy and Astrophysics. 487 (2): L33–L36. arXiv:0805.3817. Bibcode:2008A&A...487L..33L. doi:10.1051/0004-6361:200810255.
  3. ^ Massive galaxy cluster found 10 billion light years away June 6th, 2006, Space & Earth magazine

See also[edit]

Preceded by
Most massive
distant (z~>=1)
galaxy cluster

2008 – 2009
Succeeded by
XMMU J2235.3-2557