| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cetus |
| Right ascension | 00 28 34.306 |
| Declination | −16° 13′ 34.84″ |
| Apparent magnitude (V) | 9.62 |
| Characteristics | |
| Spectral type | K4V(k) |
| Apparent magnitude (B) | 10.748 |
| Apparent magnitude (J) | 7.574±0.019 |
| Apparent magnitude (H) | 7.027±0.033 |
| Apparent magnitude (K) | 6.914±0.024 |
| B−V color index | 1.128±0.010 |
| Astrometry | |
| Radial velocity (Rv) | 2.93±0.15 km/s |
| Proper motion (μ) | RA: −354.939(22) mas/yr Dec.: −227.995(15) mas/yr |
| Parallax (π) | 28.9723 ± 0.0212 mas |
| Distance | 112.58 ± 0.08 ly (34.52 ± 0.03 pc) |
| Absolute magnitude (MV) | 6.86 |
| Details | |
| Mass | 0.72±0.01 M☉ |
| Radius | 0.70±0.01 R☉ |
| Luminosity | 0.212±0.001 L☉ |
| Surface gravity (log g) | 4.6±0.01 cgs |
| Temperature | 4,692±9 K |
| Metallicity | −0.03±0.06 dex |
| Rotational velocity (v sin i) | 1.5 km/s |
| Age | 10.5±2.6 Gyr 4.3±4 Gyr |
| Other designations | |
| Felixvarela, HIP 2247, SAO 147293, PPM 208851, 2MASS J00283433-1613343 | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
BD−17 63 is a K-type main-sequence star in the southern constellation Cetus. It is a 10th magnitude star at a distance of 113 light-years from Earth. The star is rotating slowly with a negligible level of magnetic activity and an age of over 4 billion years.
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.
Planetary system
In October 2008 an exoplanet, BD−17 63 b, was reported to be orbiting this star on an eccentric orbit. This object was detected using the radial velocity method by search programs conducted using the HARPS spectrograph. An astrometric measurement of the planet's inclination and true mass was published in 2022 as part of Gaia DR3, with another astrometric orbital solution published in 2023.
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b / Finlay | 5.325±0.036 MJ | 1.361±0.021 | 655.641+0.070 −0.076 |
0.5455±0.0025 | 82.4+2.8 −2.0° |
— |
See also
References
- ^ Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. S2CID 119257644.
- 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.
- ^ 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.
- ^ 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. S2CID 116707055.
- "SIMBAD query result: G 158-84 -- High proper-motion Star". Centre de Données astronomiques de Strasbourg. Retrieved 2009-06-11.
- "Approved names". NameExoworlds. Retrieved 2020-01-02.
- "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-01-02.
- Gaia Collaboration; et al. (June 2023). "Gaia Data Release 3: Stellar multiplicity, a teaser for the hidden treasure". Astronomy & Astrophysics. 674: A34. arXiv:2206.05595. Bibcode:2023A&A...674A..34G. doi:10.1051/0004-6361/202243782.
- Winn, Joshua N. (September 2022). "Joint Constraints on Exoplanetary Orbits from Gaia DR3 and Doppler Data". The Astronomical Journal. 164 (5): 196. arXiv:2209.05516. Bibcode:2022AJ....164..196W. doi:10.3847/1538-3881/ac9126. S2CID 252211643.
- ^ Unger, N.; Ségransan, D.; et al. (December 2023). "Exploring the brown dwarf desert with precision radial velocities and Gaia DR3 astrometric orbits". Astronomy & Astrophysics. 680: A16. arXiv:2310.02758. Bibcode:2023A&A...680A..16U. doi:10.1051/0004-6361/202347578.
