HD 38529

Encyclopedia : H : HD : HD3 : HD 38529

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HR 1988, BD+01°1126, HIP 27253

HD 38529 (also known as HR 1988) is a binary star located about 138 light-years away in the constellation Orion.

Contents

1 HD 38529 A

1.1 HD 38529 Ab
1.2 HD 38529 Ac

2 HD 38529 B
3 See also
4 References
5 External links

HD 38529 A

HD 38529 A is a yellow subgiant star, which has also been classified as a main sequence dwarf of spectral type G4V. It is about 40% more massive than our Sun. Two substellar companions are known in orbit around this star, including one brown dwarf.

HD 38529 Ab

HD 38529 Ab is an extrasolar planet discovered in 2000. Because of its mass, it is likely that it is a gas giant.

HD 38529 Ac

HD 38529 Ac is a brown dwarf companion to HD 38529 A. Radial velocity measurements give a minimum mass of 12.7 times that of Jupiter, close to the brown dwarf limit at 13 Jupiter masses. Astrometric measurements from the Hipparcos mission give a best fit inclination of 160° and a mass 37 times that of Jupiter.

HD 38529 B

HD 38529 B is a common proper motion stellar companion to HD 38529 A at a projected distance of about 12042 AU. The star is a red dwarf of spectral type M3.0V.

References

Raghavan, D. et al. (2006). ["Two Suns in The Sky: Stellar Multiplicity in Exoplanet Systems"] (preprint)

External links

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