HD 114762 b
Template:SkyTemplate:Short description Script error: No such module "Distinguish".
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Coma Berenices |
| Right ascension | Template:RA[2] |
| Declination | Template:DEC[2] |
| Astrometry | |
| Distance | Script error: No such module "val".[2] ly (Script error: No such module "val".[2] pc) |
| Orbit | |
| Primary | HD 114762 |
| Period (P) | Script error: No such module "val". d[3] |
| Semi-major axis (a) | Script error: No such module "val". AU[3] |
| Eccentricity (e) | Script error: No such module "val".[3] |
| Inclination (i) | Script error: No such module "val".[3]° |
| Periastron epoch (T) | Script error: No such module "val".[4] |
| Argument of periastron (ω) (secondary) | Script error: No such module "val".[3]° |
| Semi-amplitude (K2) (secondary) | Script error: No such module "val".[4] km/s |
| Details | |
| Mass | Script error: No such module "val".[5] Template:Solar mass |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Database references | |
| SIMBAD | data |
Script error: No such module "Check for unknown parameters".
HD 114762 b is a small red dwarf star, in the HD 114762 system,[3] formerly thought to be a massive gaseous[6][7] extrasolar planet,[8] approximately Script error: No such module "convert". away in the constellation of Coma Berenices.[1][6] This optically undetected companion to the late F-type main-sequence star HD 114762 was discovered in 1989 by Latham, et al.,[7] and confirmed in an October 1991 paper by Cochran, et al.[9] It was thought to be the first discovered exoplanet (although its existence was confirmed after those around PSR B1257+12.)
The object orbits the primary star every 83.9 days at an approximate distance of 0.37 AU,[3] with an orbital eccentricity of 0.57;[3] for comparison, this orbit is similar to that of Mercury but with almost three times the eccentricity.[3] Based on the radial velocity measurements alone, it was estimated to have a minimum mass of Template:Jupiter mass (at 90°)[10] and a probable mass of approximately Template:Jupiter mass (at 10°).[11] However, analysis of its astrometric perturbation of its host star in 2019 found it to have an extremely low inclination of only Script error: No such module "val". degrees, giving it a true mass of Template:Jupiter mass and putting it well outside of the range of planetary masses (less than Template:Jupiter mass).[3] Further estimates have revised this up to 0.293 solar masses.[5]
HD 114762 b was thought for a time to be the first extrasolar planet ever detected, predating the discoveries of planets orbiting PSR B1257+12 and main-sequence star 51 Pegasi, in 1992 and 1995, respectively.[12][13] However, now that it has been found to not be a planet, the planets found orbiting PSR B1257+12 were indeed the first exoplanets ever found.[3]
At an event celebrating the career of discoverer David Latham and attended by his colleagues and collaborators, the object was informally dubbed "Latham's Planet".[14] However, this name has no official standing with the International Astronomical Union.
See also
References
<templatestyles src="Reflist/styles.css" />
- ↑ a b Script error: No such module "Citation/CS1".
- ↑ a b c d Script error: No such module "Citation/CS1".Gaia Data Release 1 catalog entry
- ↑ a b c d e f g h i j k Script error: No such module "Citation/CS1".
- ↑ a b Script error: No such module "Citation/CS1".
- ↑ a b Script error: No such module "Citation/CS1".
- ↑ a b Script error: No such module "citation/CS1".
- ↑ a b Script error: No such module "Citation/CS1".
- ↑ Template:Cite simbad
- ↑ Script error: No such module "Citation/CS1".
- ↑ Script error: No such module "Citation/CS1".
- ↑ Script error: No such module "Citation/CS1".
- ↑ Script error: No such module "Citation/CS1".
- ↑ Script error: No such module "Citation/CS1".
- ↑ Script error: No such module "citation/CS1".
Script error: No such module "Check for unknown parameters".