HD 108874 b
| Exoplanet | List of exoplanets | |
|---|---|---|
| Parent star | ||
| Star | HD 108874 | |
| Constellation | Coma Berenices | |
| Right ascension | (α) | 12h 30m 26.882s[1] |
| Declination | (δ) | +22° 52′ 47.38″[1] |
| Distance | 200 ± 10[1] ly (63 ± 4[1] pc) | |
| Spectral type | G5 | |
| Orbital elements | ||
| Semi-major axis | (a) | 1.053 ± 0.061[2] AU |
| Eccentricity | (e) | 0.128 ± 0.022[2] |
| Orbital period | (P) | 394.48 ± 0.60[2] d |
| Argument of periastron |
(ω) | 219.4 ± 9.4[2]° |
| Time of periastron | (T0) | 2,454,045 ± 49[2] JD |
| Semi-amplitude | (K) | 37.3 ± 1.1[2] m/s |
| Physical characteristics | ||
| Mass | (m) | >1.34 ± 0.11[2] MJ |
| Discovery information | ||
| Discovery date | June 30, 2003 | |
| Discoverer(s) | Butler et al.[3] | |
| Discovery method | radial velocity | |
| Discovery site |  United States | |
| Discovery status | Published[3] | |
HD 108874 b is a gas giant announced in 2003.[3] The orbit lies in the star's habitable zone.[4] It is expected that any moons orbiting this planet are enriched in carbon, and are thus quite different from the silicate-rich bodies in the Solar System.[5] The planet is possibly in a 4 : 1 orbital resonance with HD 108874 c.[6]
See also
References
- 1 2 3 4 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.Vizier catalog entry
- 1 2 3 4 5 6 7 Wright, J. T.; et al. (2009). "Ten New and Updated Multi-planet Systems, and a Survey of Exoplanetary Systems". The Astrophysical Journal 693 (2): 1084–1099. arXiv:0812.1582. Bibcode:2009ApJ...693.1084W. doi:10.1088/0004-637X/693/2/1084.
- 1 2 3 Butler, R. Paul; et al. (2003). "Seven New Keck Planets Orbiting G and K Dwarfs". The Astrophysical Journal 582 (1): 455–466. Bibcode:2003ApJ...582..455B. doi:10.1086/344570.
- ↑ Schwarz, R.; Dvorak, R.; Pilat Lohinger, E.; Süli, Á.; Érdi, B. (2007). "Trojan planets in HD 108874?". Astronomy and Astrophysics 462 (3): 1165–1170. Bibcode:2007A&A...462.1165S. doi:10.1051/0004-6361:20066284.
- ↑ Bond; Lauretta; O'Brien (2010). "The Diversity of Extrasolar Terrestrial Planets". arXiv:1001.3901 [astro-ph.EP].
- ↑ Vogt, Steven S.; et al. (2005). "Five New Multicomponent Planetary Systems". The Astrophysical Journal 632 (1): 638–658. Bibcode:2005ApJ...632..638V. doi:10.1086/432901.
External links
- "HD 108874 b". The Extrasolar Planets Encyclopedia.
Coordinates: 
12h 30m 26.8829s, +22° 52′ 47.383″
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