HD 108147 b
Exoplanet | List of exoplanets | |
---|---|---|
Parent star | ||
Star | HD 108147 | |
Constellation | Crux | |
Right ascension | (α) | 12h 25m 46.2673s[1] |
Declination | (δ) | −64° 01′ 19.516″[1] |
Distance | ±2 126 ly (±0.5 38.7 pc) | |
Spectral type | F8/G0V | |
Orbital elements | ||
Semi-major axis | (a) | 0.104 AU |
Eccentricity | (e) | 0.498 ± 0.025 |
Orbital period | (P) | 10.901 ± 0.001 d |
Argument of periastron |
(ω) | 318 ± 3.03° |
Time of periastron | (T0) | 2,451,591.6 ± 0.1 JD |
Semi-amplitude | (K) | 25.1 ± 6.1 m/s |
Physical characteristics | ||
Minimum mass | (m sin i) | 0.40 MJ |
Discovery information | ||
Discovery date | April 15, 2000[2] | |
Discoverer(s) | Pepe, Mayor, Galland et al. | |
Discovery method | Doppler spectroscopy (CORALIE) | |
Discovery site | La Silla Observatory, Chile | |
Discovery status | Published[3] | |
Database references | ||
Extrasolar Planets Encyclopaedia | data | |
SIMBAD | data | |
Exoplanet Archive | data | |
Open Exoplanet Catalogue | data |
HD 108147 b is a gas giant exoplanet with a minimum mass about half that of Jupiter. It orbits the star in a very tight "torch orbit". The distance between the planet and the star is only a tenth of the distance between Earth and the Sun (0.1AU).[3] A number of such worlds are known to exist, but the eccentricity of this planet is unusually high. Planets orbiting very close to their parent stars usually have round orbits because of the tidal forces between the bodies.
See also
References
- 1 2 Brown, A. G. A; et al. (2016). "Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties". Astronomy and Astrophysics. 595. A2. arXiv:1609.04172. Bibcode:2016A&A...595A...2G. doi:10.1051/0004-6361/201629512. Gaia Data Release 1 catalog entry
- ↑ "Exoplanets Galore!" (Press release). Garching, Germany: European Southern Observatory. April 15, 2000. Retrieved December 30, 2012.
- 1 2 Pepe, F.; et al. (2002). "The CORALIE survey for southern extra-solar planets VII. Two short-period Saturnian companions to HD 108147 and HD 168746". Astronomy and Astrophysics. 388 (2): 632–638. arXiv:astro-ph/0202457. Bibcode:2002A&A...388..632P. doi:10.1051/0004-6361:20020433.
External links
- "HD 108147". Exoplanets.
Coordinates:
This article is issued from
Wikipedia.
The text is licensed under Creative Commons - Attribution - Sharealike.
Additional terms may apply for the media files.