HD 100655
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Leo |
| Right ascension | 11h 35m 03.753s[1] |
| Declination | +20° 26′ 29.57″[1] |
| Apparent magnitude (V) | +6.45 |
| Characteristics | |
| Spectral type | G9 III |
| Astrometry | |
| Proper motion (μ) | RA: –59.23 ± 0.51[1] 6 mas/yr Dec.: –0.33 ± 0.48[1] mas/yr |
| Parallax (π) | 8.18 ± 0.50[1] mas |
| Distance | 400 ± 20 ly (122 ± 7 pc) |
| Details | |
| Mass | 2.4+0.2 −0.4 M☉ |
| Radius | 9.3+1.3 −1.1 R☉ |
| Luminosity | 43 ± 5 L☉ |
| Surface gravity (log g) | 2.89 ± 0.10 cgs |
| Temperature | 4861 ± 110 K |
| Metallicity [Fe/H] | 0.15 ± 0.12 dex |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| Extrasolar Planets Encyclopaedia | data |
HD 100655 is a G-type clump giant with one confirmed planet,[2] like Omicron Coronae Borealis b, one of the two least massive planets known around clump giants.[3]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | >1.7 MJ | 0.76+0.02 −0.04 |
157.57 ± 0.65 | 0.085 ± 0.054 | — | — |
References
- 1 2 3 4 5 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752
. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.Vizier catalog entry - 1 2 Omiya, Masashi; et al. (2012). "A Planetary Companion to the Intermediate-Mass Giant HD 100655". Publications of the Astronomical Society of Japan. 64 (2). 34. arXiv:1111.3746. Bibcode:2012PASJ...64...34O. doi:10.1093/pasj/64.2.34.
- ↑ Sato, Bun'ei; et al. (2012). "Substellar Companions to Seven Evolved Intermediate-Mass Stars". Publications of the Astronomical Society of Japan. 64 (6). 135. arXiv:1207.3141. Bibcode:2012PASJ...64..135S. doi:10.1093/pasj/64.6.135.
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