SXDF-NB1006-2

SXDF-NB1006-2
Observation data (J2000 epoch)
Constellation	Cetus
Right ascension	02^h 18^m 56.5^s
Declination	−05° 19′ 58.9″
Redshift	7.2120±0.0003[1]
Distance	12.9 billion light-years (light travel distance) 29 billion light-years (proper distance)
Other designations
SKO2012 SXDF-NB1006-2

SXDF-NB1006-2 is a distant galaxy located in the Cetus constellation, with a spectroscopic redshift of z = 7.213 or 12.91 billion light-years away.^[2] It was discovered by the Subaru XMM-Newton Deep Survey Field.^[2] The galaxy was claimed to be the most distant galaxy at announcement in June 2012, as the more distant claimants were not confirmed spectroscopically at the time. It exceeded the previous confirmed distance holder, GN-108036, also discovered by the Subaru.^[3] Oxygen emission lines have been detected in its spectrum.^[4]

See also

• List of the most distant astronomical objects
• z8 GND 5296

References

1. Inoue, Akio K.; et al. (June 2016). "Detection of an oxygen emission line from a high redshift galaxy in the reionization epoch" (PDF). Science. 352 (6293): 1559–1562. arXiv:1606.04989. Bibcode:2016Sci...352.1559I. doi:10.1126/science.aaf0714. PMID 27312046. S2CID 206646433.
2. Thirty Meter Telescope, TMT - SXDF-NB1006-2 Archived 2013-05-24 at the Wayback Machine, NAOJ (accessed 16 November 2012)
3. SPACE.com, "Newfound Galaxy May Be Most Distant Ever Seen", 14 June 2012 (accessed 18 December 2012)
4. Perkins, Sid (2016-06-16). "Ancient galaxy holds oldest oxygen in universe / Science / AAAS". Science. doi:10.1126/science.aag0615.

Records
Preceded by GN-108036	Most distant galaxy 2012–2013	Succeeded by Z8 GND 5296