HD 50554 b
Extrasolar planet in the constellation Gemini
From Wikipedia, the free encyclopedia
HD 50554 b is a Jupiter-sized exoplanet with a minimum mass 4.4 times that of Jupiter. The planet was announced in 2001 by the European Southern Observatory and formally published in 2002 using observations from the Lick and Keck telescopes.[1][2] In 2023, the inclination and true mass of HD 50554 b were determined via astrometry.[3]
DiscoverydateApril 4, 2001
2.339+0.03
−0.029 AU
−0.029 AU
| Discovery[1][2] | |
|---|---|
| Discovered by | Geneva Extrasolar Planet Search |
| Discovery date | April 4, 2001 |
| Doppler spectroscopy | |
| Orbital characteristics[3] | |
| 2.339+0.03 −0.029 AU | |
| Eccentricity | 0.482+0.015 −0.015 |
| 1238+7 −8 d 3.39+0.02 −0.023 yr | |
| Inclination | 61°±12° or 119°±12° |
| 97°+50° −40° | |
| 2455567+21 −23 | |
| 4.0°+2.6° −2.1° | |
| Semi-amplitude | 91.5 ± 7.6[4] |
| Star | HD 50554 |
| Physical characteristics[3] | |
| Mass | 5.85+0.9 −0.52 MJ |
