BD-17°63
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cetus |
| Right ascension | 00h 28m 34.31s[1] |
| Declination | −16° 13′ 34.8″[1] |
| Apparent magnitude (V) | 9.63 |
| Characteristics | |
| Spectral type | K4V[2] |
| Apparent magnitude (B) | ~10.77[2] |
| Apparent magnitude (J) | 7.574 ± 0.019[2] |
| Apparent magnitude (H) | 7.027 ± 0.033[2] |
| Apparent magnitude (K) | 6.914 ± 0.024[2] |
| Astrometry | |
| Proper motion (μ) | RA: –353.78 ± 1.45[1] mas/yr Dec.: –228.96 ± 0.90[1] mas/yr |
| Parallax (π) | 28.01 ± 1.27[1] mas |
| Distance | 116 ± 5 ly (36 ± 2 pc) |
| Absolute magnitude (MV) | 6.87 |
| Details | |
| Mass | 0.72 ± 0.01[3] M☉ |
| Radius | 0.7 ± 0.01[3] R☉ |
| Luminosity | 0.212 ± 0.001[3] L☉ |
| Surface gravity (log g) | 4.6 ± 0.01[3] cgs |
| Temperature | 4692 ± 9[3] K |
| Metallicity [Fe/H] | –0.03 ± 0.06 dex |
| Age | 10.5 ± 2.6[3] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| Extrasolar Planets Encyclopaedia | data |
BD-17°63 is an low-mass K type star in the southern constellation Cetus. It is a 9th magnitude star at a distance of about 116 light years from Earth.[1]
Planetary system
In October 2008 an extrasolar planet, BD-17°63 b, was reported to be orbiting this star. This object was detected using the radial velocity method by search programs conducted using the HARPS spectrograph.[4]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | ≥5.1 ± 0.12 MJ | 1.34 ± 0.02 | 655.6 ± 0.6 | 0.54 ± 0.005 | — | — |
See also
References
- 1 2 3 4 5 6 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 "SIMBAD query result: G 158-84 -- High proper-motion Star". Centre de Données astronomiques de Strasbourg. Retrieved 2009-06-11.
- 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 Moutou, C.; et al. (2009). "The HARPS search for southern extra-solar planets XVII. Six long-period giant planets around BD -17 0063, HD 20868, HD 73267, HD 131664, HD 145377, HD 153950". Astronomy and Astrophysics. 496 (2): 513–519. arXiv:0810.4662. Bibcode:2009A&A...496..513M. doi:10.1051/0004-6361:200810941.
External links
- "BD-17 63". Exoplanets.
Coordinates: 
00h 28m 34.306s, −16° 13′ 34.84″
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