HD 32518
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Camelopardalis |
| Right ascension | 05h 09m 36.72s[1] |
| Declination | +69° 38′ 21.9″[1] |
| Apparent magnitude (V) | 6.436 |
| Characteristics | |
| Spectral type | K1III |
| Apparent magnitude (B) | 7.537 |
| Apparent magnitude (J) | 4.531 |
| Apparent magnitude (H) | 3.992 |
| Apparent magnitude (K) | 3.911 |
| B−V color index | 1.101 |
| Astrometry | |
| Radial velocity (Rv) | –7.02 km/s |
| Proper motion (μ) | RA: 60.26 ± 0.28[1] mas/yr Dec.: -62.81 ± 0.52[1] mas/yr |
| Parallax (π) | 8.29 ± 0.58[1] mas |
| Distance | 390 ± 30 ly (121 ± 8 pc) |
| Absolute magnitude (MV) | 1.09 |
| Details | |
| Mass | 1.2 ± 0.1[2] M☉ |
| Radius | 10.8 ± 0.3[2] R☉ |
| Luminosity | 46.4 ± 0.9[2] L☉ |
| Surface gravity (log g) | 2.4 ± 0.1[2] cgs |
| Temperature | 4599 ± 41[2] K |
| Metallicity [Fe/H] | −0.15 ± 0.04 dex |
| Age | 6.4 ± 1.5[2] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| Extrasolar Planets Encyclopaedia | data |
HD 32518 is a 6th magnitude K-type giant star located approximately 390 light years away in the constellation of Camelopardalis. It is 1.13 times more massive, 10.22 times larger, and 41.2 times more luminous than the Sun. However, it has a lower amount of metals than our Sun and the age is older. In August 2009, it was found that this giant star has a giant planet.[3]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | ≥3.04 ± 0.69 MJ | 0.59 ± 0.03 | 157.54 ± 0.38 | 0.01 ± 0.03 | — | — |
See also
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 3 4 5 6 Bonfanti, A.; et al. (2015). "Revising the ages of planet-hosting stars". Astronomy and Astrophysics. 575. A18. arXiv:1411.4302. Bibcode:2015A&A...575A..18B. doi:10.1051/0004-6361/201424951.
- 1 2 Döllinger, P.; et al. (2009). "Planetary companions around the K giant stars 11 Ursae Minoris and HD 32518". Astronomy and Astrophysics. 505 (3): 1311–1317. arXiv:0908.1753. Bibcode:2009A&A...505.1311D. doi:10.1051/0004-6361/200911702.
Coordinates: 
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