Gliese 758 B
| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
 | ||
| Parent star | ||
| Star | GJ 758 | |
| Constellation | Lyra | |
| Right ascension | (α) | 19h 23m 34.0s |
| Declination | (δ) | +33° 13′ 19.1″ |
| Apparent magnitude | (mV) | 6.36 |
| Distance | 50.55 ly (15.5 pc) | |
| Spectral type | G9V | |
| Orbital elements | ||
| Semimajor axis | (a) | 41.8+37.3 −13.4[1] AU |
| Eccentricity | (e) | 0.464+0.206 −0.260[1] |
| Orbital period | (P) | 270+433 −119[1] y |
| Physical characteristics | ||
| Mass | (m) | ~30–40[1] MJ |
| Temperature | (T) | 593+44 −44 |
| Discovery information | ||
| Discovery date | November 9, 2009 | |
| Discoverer(s) | Thalmann, et al. | |
| Discovery method | Direct imaging | |
| Discovery status | Published | |
| Database references | ||
| Extrasolar Planets Encyclopaedia | data | |
| SIMBAD | data | |
| Exoplanet Archive | data | |
| Open Exoplanet Catalogue | data | |
GJ 758 B is a brown dwarf orbiting the G-type main sequence star GJ 758, located approximately 50 light years away, in the constellation Lyra.
GJ 758 B was detected by direct imaging using the HiCIAO instrument of the Subaru Telescope.[2][3][4] The parameters have subsequently been revised in a follow-up study which also revealed that a putative second substellar object in the system was in fact an unrelated background star.[1]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 Janson, M.; Carson, J.; Thalmann, C.; McElwain, M. W.; Goto, M.; Crepp, J.; Wisniewski, J.; Abe, L.; Brandner, W.; Burrows, A.; Egner, S.; Feldt, M.; Grady, C. A.; Golota, T.; Guyon, O.; Hashimoto, J.; Hayano, Y.; Hayashi, M.; Hayashi, S.; Henning, T.; Hodapp, K. W.; Ishii, M.; Iye, M.; Kandori, R.; Knapp, G. R.; Kudo, T.; Kusakabe, N.; Kuzuhara, M.; Matsuo, T.; Mayama, S.; Miyama, S.; Morino, J.-I.; Moro-Martín, A.; Nishimura, T.; Pyo, T.-S.; Serabyn, E.; Suto, H.; Suzuki, R.; Takami, M.; Takato, N.; Terada, H.; Tofflemire, B.; Tomono, D.; Turner, E. L.; Watanabe, M.; Yamada, T.; Takami, H.; Usuda, T.; Tamura, M. (2011). "Near-infrared Multi-band Photometry of the Substellar Companion GJ 758 B". The Astrophysical Journal 728 (2). arXiv:1011.5505. Bibcode:2011ApJ...728...85J. doi:10.1088/0004-637X/728/2/85.
- ↑ Thalmann, Christian (2009). "Discovery of the Coldest Imaged Companion of a Sun-Like Star". v1. arXiv:0911.1127 [astro-ph.EP].
- ↑ "Possible Planet Around a G-class Star". Centauri Dreams. 2009-12-04. Retrieved 2009-12-04.
- ↑ "Discovery of an Exoplanet Candidate Orbiting a Sun-Like Star: Inaugural Observations with Subaru's New Instrument HiCIAO". Subaru Telescope. 2009-12-03. Retrieved 2009-12-04.
External links
Coordinates: 
19h 23m 34.0s, +33° 13′ 19.1″
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