HD 66428
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Observation data Epoch J2000.0 |
|
---|---|
Constellation (pronunciation) |
Monoceros |
Right ascension | 08h 03m 28.665s |
Declination | -01° 09′ 45.75″ |
Apparent magnitude (V) | 8.25 |
Distance | 179 ± 12.4 ly (55 ± 3.8 pc) |
Spectral type | G3V |
Other designations | |
HD 66428 is a G-type yellow dwarf star similar to our Sun in the constellation Monoceros. It has apparent magnitude 8.25 and it is 179 light years away.
This star has precise mass of 1.14552 solar mass. The precision comes from Corot mission that measured stellar seismology.
[edit] HD 66428 b
Extrasolar planet | List of extrasolar planets | |
---|---|---|
Orbital elements | ||
Semimajor axis | (a) | 3.18 ± 0.19 AU |
Eccentricity | (e) | 0.465 ± 0.03 |
Orbital period | (P) | 1973 ± 31 d |
Angular distance | (θ) | 57.818 mas |
Longitude of periastron |
(ω) | 152.9 ± 3.9° |
Time of periastron | (T0) | 2,412,139 ± 16 JD |
Semi-amplitude | (K) | 48.3 ± 2.7 m/s |
Physical characteristics | ||
Mass | (m) | >2.82 MJ |
Discovery information | ||
Discovery date | July 15, 2006 | |
Discoverer(s) | Butler et al. | |
Detection method | radial velocity | |
Discovery status | published |
HD 66428 b is a long-period upper jovian planet that takes 1973 days to orbit around HD 66428. The average distance is 3.18 AU. The planet is eccentric Jupiter; at periastron, the distance is 1.70 AU and at apastron, the distance is 4.66 AU.
[edit] References
- Butler et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal 646 (1): 505 – 522. doi: . (web Preprint)