HD 114762
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| Observation data Epoch J2000.0 |
|
|---|---|
| Constellation (pronunciation) |
Coma Berenices |
| Right ascension | 13h 12m 20s |
| Declination | +17° 31' 02" |
| Apparent magnitude (V) | 7.30 |
| Distance | 132.3 ly (40.6 pc) |
| Spectral type | F9V |
| Other designations | |
|
BD+18°2700, HIP 64426, SAO 100458
|
|
HD 114762 is a yellow-white main sequence star. It is located in the dim constellation Coma Berenices. To see it, one needs a telescope or good binoculars.
[edit] HD 114762 b
| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
| Orbital elements | ||
| Semimajor axis | (a) | 0.363 ± 0.021 AU |
| Eccentricity | (e) | 0.3359 ± 0.0091 |
| Orbital period | (P) | 83.8881 ± 0.0086 d (0.23 y) |
| Angular distance | (θ) | 1.2 mas |
| Longitude of periastron |
(ω) | 201.7 ± 1.4° |
| Time of periastron | (T0) | 2,449,805.36 ± 0.34 JD |
| Semi-amplitude | (K) | 615.2 ± 6.7 m/s |
| Physical characteristics | ||
| Mass | (m) | >11.02 ± 0.96 MJ |
| Discovery information | ||
| Discovery date | 1989 | |
| Discoverer(s) | Latham et al. | |
| Detection method | Doppler Spectroscopy | |
| Discovery status | Confirmed | |
HD 114762 b is an unseen companion to HD 114762, discovered in 1989 by David Latham and others.[2] As of 2006, insufficient confirmed measurements exist to determine whether it is a high mass gas giant, with its lowest possible mass being 11 times the mass of Jupiter, brown dwarf, or a red dwarf with its highest mass around 145 times.[3][4] It orbits the star around 83.89 days and an orbital eccentricity of 0.34.
[edit] References
- ^ Butler, R. et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal 646: 505 – 522. doi:. (web Preprint)
- ^ Latham, David W. et al (1989). "The unseen companion of HD114762 - A probable brown dwarf". Nature (journal) 339: 38–40. doi:.
- ^ Alan Hale (1995). "On the nature of the companion to HD 114762". Astronomical Society of the Pacific 107: 22–26. doi:.
- ^ Marcy et al (1999). "Two New Candidate Planets in Eccentric Orbits" ([dead link]). Astrophysical Journal 520: 239–247. doi:.
[edit] External links
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