HD 108874 b

HD 108874 b
Exoplanet List of exoplanets
Parent star
Star HD 108874
Constellation Coma Berenices
Right ascension (α) 12h 30m 26.8818s[1]
Declination (δ) +22° 52′ 47.3806″[1]
Distance194.5±0.5[1] ly
(59.6±0.2[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]

Discovery

The jovian planet HD 108874 b was discovered by the US-based team lead by Paul Butler, Geoffrey Marcy, Steven Vogt, and Debra Fischer. A total of 20 radial velocity observations, obtained at the W. M. Keck Observatory in Hawaii between 1999 and 2002, were used to make the discovery.[3]

See also

References

  1. 1 2 3 4 Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  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 4 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. CiteSeerX 10.1.1.7.6988. 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". Proceedings of the International Astronomical Union. 5: 399. arXiv:1001.3901 [astro-ph.EP]. doi:10.1017/S1743921310001079. Cite uses deprecated parameter |class= (help)
  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.
  • "HD 108874 b". The Extrasolar Planets Encyclopedia.

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


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