BD−17 63
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| 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(k)[2] |
| Apparent magnitude (B) | ~10.77[3] |
| Apparent magnitude (J) | 7.574±0.019[3] |
| Apparent magnitude (H) | 7.027±0.033[3] |
| Apparent magnitude (K) | 6.914±0.024[3] |
| Astrometry | |
| Radial velocity (Rv) | 2.93±0.15[4] km/s |
| Proper motion (μ) | RA: −354.939±0.022[4] mas/yr Dec.: −227.995±0.015[4] mas/yr |
| Parallax (π) | 28.9723 ± 0.0212 mas[4] |
| Distance | 112.58 ± 0.08 ly (34.52 ± 0.03 pc) |
| Absolute magnitude (MV) | 6.87 |
| Details | |
| Mass | 0.72±0.01[5] M☉ |
| Radius | 0.7±0.01[5] R☉ |
| Luminosity | 0.212±0.001[5] L☉ |
| Surface gravity (log g) | 4.6±0.01[5] cgs |
| Temperature | 4,692±9[5] K |
| Metallicity [Fe/H] | −0.03±0.06 dex |
| Age | 10.5±2.6[5] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| Extrasolar Planets Encyclopaedia | data |
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 113 light years from Earth.
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.[6][7]
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.[8] An astrometric measurement of the planet's inclination and true mass was published in 2022 as part of Gaia DR3.[9]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 4.3±0.5 MJ | 1.34 ± 0.02 | 655.6 ± 0.6 | 0.54 ± 0.005 | 80±6° | — |
See also
References
- ^ a b 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.
- ^ Gray, R. O.; Corbally, C. J.; Garrison, R. F.; McFadden, M. T.; Bubar, E. J.; McGahee, C. E.; O'Donoghue, A. A.; Knox, E. R. (July 2006). "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 pc--The Southern Sample". The Astronomical Journal. 132 (1): 161–170. arXiv:astro-ph/0603770. Bibcode:2006AJ....132..161G. doi:10.1086/504637.
- ^ a b c d "SIMBAD query result: G 158-84 -- High proper-motion Star". Centre de Données astronomiques de Strasbourg. Retrieved 2009-06-11.
- ^ a b c d Vallenari, A.; et al. (Gaia Collaboration) (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. arXiv:2208.00211. doi:10.1051/0004-6361/202243940. Gaia DR3 record for this source at VizieR.
- ^ a b c d e f 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.
- ^ a b 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.
- ^ a b Gaia Collaboration; et al. (2022). "Gaia Data Release 3: Stellar multiplicity, a teaser for the hidden treasure". arXiv:2206.05595 [astro-ph.SR].
External links
- "BD-17 63". Exoplanets. Archived from the original on 2016-03-03. Retrieved 2009-06-12.
