HD 100777 b
Exoplanet | List of exoplanets | |
---|---|---|
Parent star | ||
Star | HD 100777 | |
Constellation | Leo | |
Right ascension | (α) | 11h 35m 51.5234s |
Declination | (δ) | −04° 45′ 20.509″ |
Distance | 172.2 ly (52.8 pc) | |
Spectral type | K0IV | |
Orbital elements | ||
Semi-major axis | (a) | 1.03 ± 0.03 AU |
Periastron | (q) | 0.659 AU |
Apastron | (Q) | 1.40 AU |
Eccentricity | (e) | 0.36 ± 0.02 |
Orbital period | (P) | 383.7 ± 1.2 d (1.050 y) |
Orbital speed | (υ) | 29.3 km/s |
Argument of periastron |
(ω) | 202.7 ± 3.0° |
Time of periastron | (T0) | 2,453,456.2 ± 2.3 JD |
Semi-amplitude | (K) | 34.9 ± 0.8 m/s |
Physical characteristics | ||
Mass | (m) | >1.17 ± 0.02 MJ |
Discovery information | ||
Discovery date | March 5, 2007 | |
Discoverer(s) | Naef et al.[1] | |
Discovery method | HARPS | |
Discovery site | Chile | |
Discovery status | Published[1] | |
Database references | ||
Extrasolar Planets Encyclopaedia | data | |
SIMBAD | data | |
Exoplanet Archive | data | |
Open Exoplanet Catalogue | data |
HD 100777 b is an extrasolar planet located approximately 172 light-years away in the constellation of Leo, orbiting the star HD 100777. This is a >1.17 MJ planet taking 33.15 Ms to orbit at 154.1 Gm or 4.99 μpc from the star at 36% eccentricity. The velocity of the orbit is 29.3 km/s. Dominique Naef discovered this planet in March 2007 by using HARPS spectrograph located in Chile.[1]
See also
References
- 1 2 3 Naef, M.; et al. (2007). "The HARPS search for southern extra-solar planets IX. Exoplanets orbiting HD 100777 , HD 190647 , and HD 221287". Astronomy and Astrophysics. 470 (2): 721–726. arXiv:0704.0917. Bibcode:2007A&A...470..721N. doi:10.1051/0004-6361:20077361.
External links
- "HD 100777". Exoplanets.
Coordinates: 11h 35m 51.5234s, −04° 45′ 20.509″
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