HD 168443 b

HD 168443 b
Exoplanet List of exoplanets
Parent star
Star HD 168443
Constellation Serpens
Right ascension (α) 18h 20m 03.931s[1]
Declination (δ) −09° 35′ 44.59″[1]
Apparent magnitude (mV) 6.92
Distance122±3[1] ly
(37.4±1.0[1] pc)
Spectral type G5IV
Orbital elements
Semi-major axis(a) 0.29 AU
Eccentricity (e) 0.529 ± 0.02
Orbital period(P) 58.116 ± 0.001 d
Argument of
periastron		 (ω) 172.9°
Time of periastron (T0) 2,451,616.36 ± 0.02 JD
Semi-amplitude (K) 475.9 ± 1.6 m/s
Physical characteristics
Minimum mass(m sin i)7.696 ± 0.015[2] MJ
(2300 M⊕)
Discovery information
Discovery date September 9, 1998
Discoverer(s) Butler, Marcy et al.
Discovery method Doppler spectroscopy
Discovery site Hawaii, United States
Discovery status Published
Database references
Extrasolar Planets
Encyclopaedia		data
SIMBADdata
Exoplanet Archivedata
Open Exoplanet Cataloguedata

HD 168443 b is a planet seven times as massive as Jupiter. Given the high mass, this planet is likely to be a gas giant, or possibly a small brown dwarf depending on the orbital inclination. It orbits closer to its star than Mercury does to the Sun, and its surface temperature is likely to be very high.

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. ↑ Wang, Sharon Xuesong; et al. (2012). "The Discovery of HD 37605c and a Dispositive Null Detection of Transits of HD 37605b". The Astrophysical Journal. 761 (1). 46. arXiv:1210.6985. Bibcode:2012ApJ...761...46W. doi:10.1088/0004-637X/761/1/46.
Sources
  • Marcy; Butler, R. Paul; Vogt, Steven S.; Fischer, Debra; Liu, Michael C. (1998). "Two New Planets in Eccentric Orbits". The Astrophysical Journal. 520 (1): 239–247. arXiv:astro-ph/9904275. Bibcode:1999ApJ...520..239M. doi:10.1086/307451.
  • "HD 168443". Exoplanets. Retrieved 2008-09-08.

Coordinates: 18h 20m 03.9316s, −09° 35′ 44.601″


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