DENIS-P J082303.1-491201 b (alias 2MASS J08230313-4912012 b) is a substellar object, classified as either an exoplanet or a brown dwarf, orbiting DENIS-P J082303.1-491201,[4] an L1.5-type brown dwarf in the constellation Vela.[2]
| Discovery[1] | |
|---|---|
| Discovered by | Sahlmann et al. (2013) |
| Discovery site | ESO telescopes at the La Silla Paranal Observatory |
| Discovery date | August 2013 |
| Astrometry | |
| Designations | |
| 2MASS J08230313-4912012 b[2] | |
| Orbital characteristics[2] | |
| 0.36±0.01 AU | |
| Eccentricity | 0.345+0.068 −0.064 |
| 246.36+1.38 −1.35 days | |
| Inclination | 56.6+1.9 −2.1 deg |
| 36.3+7.2 −8.4 deg | |
| Physical characteristics | |
| Mass | 28.5±1.9 MJ[2] |
| Temperature | 1670 |
Spectral type | L5.5[3] |
Discovery
editDENIS-P J082303.1-491201 b was discovered by Sahlmann et al. (2013) using the ESO telescopes at the La Silla Paranal Observatory.[1] It is part of an ultracool binary system.[1]
Properties
editIt is located 20.77 parsecs (67.7 ly) from Earth. At 28.5±1.9 MJ,[2] it is listed as among the most massive planets in the NASA Exoplanet Archive.
It orbits the nearby L1.5-type brown dwarf DENIS-P J082303.1-491201, which is 7.5±0.7% the mass of the Sun,[1] and has an orbital period of about 246 days.[1][2]
See also
editReferences
edit- ^ a b c d e Sahlmann, J.; Lazorenko, P. F.; Ségransan, D.; Martín, Eduardo L.; Queloz, D.; et al. (August 2013). "Astrometric orbit of a low-mass companion to an ultracool dwarf". Astronomy & Astrophysics. 556. A133. arXiv:1306.3225. Bibcode:2013A&A...556A.133S. doi:10.1051/0004-6361/201321871. S2CID 119193690.
- ^ a b c d e f "DENIS-P J082303.1-491201 b". Caltech. Retrieved 8 March 2014.
- ^ Bardalez Gagliuffi, Daniella C.; Burgasser, Adam J.; Schmidt, Sarah J.; Theissen, Christopher; Gagné, Jonathan; Gillon, Michael; Sahlmann, Johannes; Faherty, Jacqueline K.; Gelino, Christopher; Cruz, Kelle L.; Skrzypek, Nathalie; Looper, Dagny (2019). "The Ultracool Spe Xtroscopic Survey. I. Volume-limited Spectroscopic Sample and Luminosity Function of M7−L5 Ultracool Dwarfs". The Astrophysical Journal. 883 (2): 205. arXiv:1906.04166. Bibcode:2019ApJ...883..205B. doi:10.3847/1538-4357/ab253d. S2CID 184487061.
- ^ "2MASS J08230313-4912012". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 8 March 2014.