Astronomy:HD 66428 b

From HandWiki
Short description: Long-period jovian exoplanet in the constellation of Monoceros
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 astronomical unit|AU
Eccentricity0.471±0.012
Orbital period6.214+0.015
−0.016 yr
Inclination16.639°+10.121°
−2.959°
Longitude of ascending node299.391°+8.486°
−8.219°
astron|astron|helion}}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 Jupiter mass


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 |♃|J}}}}}} 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. ↑ 1.0 1.1 Butler, R. P. et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal 646 (1): 505–522. doi:10.1086/504701. Bibcode: 2006ApJ...646..505B. 
  2. ↑ 2.0 2.1 2.2 Feng, Fabo et al. (August 2022). "3D Selection of 167 Substellar Companions to Nearby Stars". The Astrophysical Journal Supplement Series 262 (21): 21. doi:10.3847/1538-4365/ac7e57. Bibcode: 2022ApJS..262...21F. 

External links

Coordinates: Sky map 08h 03m 28.6652s, −01° 09′ 45.752″



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