HD 168443

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HD 168443
Observation data
Epoch J2000      Equinox J2000
Constellation Serpens
Right ascension 18h 20m 03.9316s
Declination –09° 35′ 44.601″
Apparent magnitude (V) 6.92
Distance 123.5 ly
(37.88 pc)
Spectral type G5IV
Other designations
BD-09°4692, GJ 4052,
HIP 89844, LTT 7289, SAO 142228
Database references

HD 168443 is a yellow dwarf star of (spectral type G5) about the mass of the Sun. It is in the constellation of Serpens Cauda, 123 light years from the Solar System. It is known to be orbited by one large planet and a brown dwarf. The brown dwarf takes 30 times longer to orbit the star than the gas giant planet.[1][2]

The HD 168443 planetary system
(in order from star)
Mass Semimajor axis
Orbital period
Eccentricity Inclination Radius
b >7.696 ± 0.015[3] MJ 0.29 58.116 ± 0.001 0.529 ± 0.02
c >17.378 ± 0.044[3] MJ 2.87 1739.5 ± 3.8 0.228 ± 0.005

See also[edit]


  1. ^ Marcy, Geoffrey W.; Butler, R. Paul; Vogt, Steven S.; Liu, Michael C.; Laughlin, Gregory; Apps, Kevin; Graham, J. R.; Lloyd, J.; Luhman, Kevin L.; Jayawardhana, Ray (2001). "Two Substellar Companions Orbiting HD 168443". The Astrophysical Journal. 555 (1): 418–425. Bibcode:2001ApJ...555..418M. doi:10.1086/321445. 
  2. ^ Reffert, S.; Quirrenbach, A. (2006). "Hipparcos astrometric orbits for two brown dwarf companions: HD 38529 and HD 168443". Astronomy and Astrophysics. 449 (2): 699–702. Bibcode:2006A&A...449..699R. doi:10.1051/0004-6361:20054611. 
  3. ^ a b WANG Sh.; et al. (2012). "The Discovery of HD 37605c and a Dispositive Null Detection of Transits of HD 37605b". Astrophysical Journal. arXiv:1210.6985Freely accessible. Bibcode:2012ApJ...761...46W. doi:10.1088/0004-637X/761/1/46. 

External links[edit]