HD 108874 b

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]
Distance200 ± 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. 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
  2. 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.
  3. 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.
  4. 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.
  5. Bond; Lauretta; O'Brien (2010). "The Diversity of Extrasolar Terrestrial Planets". arXiv:1001.3901 [astro-ph.EP].
  6. 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

Coordinates: 12h 30m 26.8829s, +22° 52′ 47.383″


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