HD 168443 b

HD 168443 b
Exoplanet List of exoplanets
Parent star
Star HD 168443
Constellation Serpens
Right ascension (α) 18h 20m 03.9316s
Declination (δ) −09° 35 44.601
Apparent magnitude (mV) 6.92
Distance123.5 ly
(37.88 pc)
Spectral type G5IV
Orbital elements
Semi-major axis(a) 0.29 AU
Periastron (q) 0.14 AU
Apastron (Q) 0.44 AU
Eccentricity (e) 0.529 ± 0.02
Orbital period(P) 58.116 ± 0.001 d
(0.15911 y)
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[1] MJ
(2300 M)
Discovery information
Discovery date September 9, 1998
Discoverer(s) Butler, Marcy et al.
Discovery method Doppler spectroscopy
Discovery site Hawaii, USA
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

Notes
  1. WANG Sh.; et al. (2012). "The Discovery of HD 37605c and a Dispositive Null Detection of Transits of HD 37605b". Astrophysical Journal. arXiv:1210.6985. Bibcode:2012ApJ...761...46W. doi:10.1088/0004-637X/761/1/46.
Sources

External links

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


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