HD 66428 b

HD 66428 b
Discovery
Discovered byButler et al.[1]
Discovery siteUnited States California
Discovery dateJuly 15, 2006
Radial velocity
Orbital characteristics[2]
3.395+0.141
−0.157 AU
Eccentricity0.471±0.012
6.214+0.015
−0.016 yr
Inclination16.639°+10.121°
−2.959°
299.391°+8.486°
−8.219°
2450057.763+16.562
−18.431
185.689°+1.688°
−1.596°
Semi-amplitude54.441+1.035
−1.167 m/s
StarHD 66428
Physical characteristics[2]
Mass10.946+2.442
−3.845 MJ

HD 66428 b is a long-period jovian exoplanet located approximately 174 light-years away in the constellation of Monoceros. It has a minimum mass of 2.82 MJ and takes 1973 days or 5.402 years to orbit around its solar-type star HD 66428. The average distance is 3.18 AU, about half the distance between Mars and Jupiter. This planet is a so-called eccentric Jupiter with an orbital eccentricity of 0.465. At periastron, the distance is 1.70 AU and at apastron, the distance is 4.66 AU.[1] In 2022, the inclination and true mass of HD 66428 b were measured via astrometry.[2]

See also

References

  1. ^ a b Butler, R. P.; et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal. 646 (1): 505–522. arXiv:astro-ph/0607493. Bibcode:2006ApJ...646..505B. doi:10.1086/504701. S2CID 119067572.
  2. ^ a b c Feng, Fabo; Butler, R. Paul; et al. (August 2022). "3D Selection of 167 Substellar Companions to Nearby Stars". The Astrophysical Journal Supplement Series. 262 (21): 21. arXiv:2208.12720. Bibcode:2022ApJS..262...21F. doi:10.3847/1538-4365/ac7e57. S2CID 251864022.

External links