BD−17 63
BD−17 63 is a low-mass K type star in the southern constellation Cetus. It is a 9th magnitude star at a distance of about 112 light years from Earth.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cetus |
| Right ascension | 00h 28m 34.3061s[1] |
| Declination | −16° 13′ 34.8414″[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: −355.181±0.161[1] mas/yr Dec.: −227.737±0.070[1] mas/yr |
| Parallax (π) | 28.9903 ± 0.0774[1] mas |
| Distance | 112.5 ± 0.3 ly (34.49 ± 0.09 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 |
The star BD-17 63 is named Felixvarela. The name was selected in the NameExoWorlds campaign by Cuba, during the 100th anniversary of the IAU. Felix Varela (1788–1853) was the first to teach science in Cuba.[4][5]
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.[6]
| 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
- List of extrasolar planets
References
- Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- "SIMBAD query result: G 158-84 -- High proper-motion Star". Centre de Données astronomiques de Strasbourg. Retrieved 2009-06-11.
- 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. S2CID 54555839.
- "Approved names". NameExoworlds. Retrieved 2020-01-02.
- "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-01-02.
- 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. Archived from the original on 2016-03-03. Retrieved 2009-06-12.
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