S Ori 52

S Ori 52
Object type	Brown dwarf, star, near-IR source
Observation data; (Epoch 2012)
Constellation	Orion
Right ascension	05h 40m 9,2s
Declination	−02° 26′ 32″
	In visual light (V)
Apparent magnitude	20,95 mag
Mass	~ 2 - 8 jupiters
Temperature	1300 - 2000 K

S Ori 52 is an astronomical object from the Delta Orionis cluster, in the spectral class L. The object was first observed by Maria Rosa Zapatero Osorio at the W.M. Keck Observatory on Mauna Kea.[1] The object is estimated to have a mass between 2 and 8 times the mass of Jupiter.[2] The exact nature of the object remains debatable, and studies show that it could be a sub-brown dwarf,[1] a rogue planet,[1] or it could simply be an older brown dwarf located in the foreground of the Orionis cluster.[3]

References

Zapatero Osorio, M. R.; Béjar, V. J. S.; Martı́n, E. L.; Rebolo, R.; Navascués, D. Barrado y; Bailer-Jones, C. A. L.; Mundt, R. (2000-10-06). "Discovery of Young, Isolated Planetary Mass Objects in the σ Orionis Star Cluster". Science. 290 (5489): 103–107. doi:10.1126/science.290.5489.103. ISSN 0036-8075. PMID 11021788.
Gray, Richard O.; Corbally, Christopher J.; Burgasser, Adam J. (2009-03-29). Stellar Spectral Classification. Princeton University Press. ISBN 978-0-691-12511-4.
Burgasser, Adam J.; Kirkpatrick, J. Davy; McGovern, Mark R.; McLean, Ian S.; Prato, L.; Reid, I. Neill (2004-04-01). "S Orionis 70: Just a Foreground Field Brown Dwarf?". The Astrophysical Journal. 604 (2): 827–831. Bibcode:2004ApJ...604..827B. doi:10.1086/382129. ISSN 0004-637X. S2CID 14102676.

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[:0-1] Zapatero Osorio, M. R.; Béjar, V. J. S.; Martı́n, E. L.; Rebolo, R.; Navascués, D. Barrado y; Bailer-Jones, C. A. L.; Mundt, R. (2000-10-06). "Discovery of Young, Isolated Planetary Mass Objects in the σ Orionis Star Cluster". Science. 290 (5489): 103–107. doi:10.1126/science.290.5489.103. ISSN 0036-8075. PMID 11021788.

[2] Gray, Richard O.; Corbally, Christopher J.; Burgasser, Adam J. (2009-03-29). Stellar Spectral Classification. Princeton University Press. ISBN 978-0-691-12511-4.

[3] Burgasser, Adam J.; Kirkpatrick, J. Davy; McGovern, Mark R.; McLean, Ian S.; Prato, L.; Reid, I. Neill (2004-04-01). "S Orionis 70: Just a Foreground Field Brown Dwarf?". The Astrophysical Journal. 604 (2): 827–831. Bibcode:2004ApJ...604..827B. doi:10.1086/382129. ISSN 0004-637X. S2CID 14102676.