BD−17 63

BD-17 63 / Felixvarela
Observation data
Epoch J2000      Equinox J2000
Constellation Cetus[1]
Right ascension 00h 28m 34.306s[2]
Declination −16° 13′ 34.84″[2]
Apparent magnitude (V) 9.62[1]
Characteristics
Evolutionary stage main sequence[2]
Spectral type K4V(k)[3]
Apparent magnitude (B) 10.748[1]
Apparent magnitude (J) 7.574±0.019[1]
Apparent magnitude (H) 7.027±0.033[1]
Apparent magnitude (K) 6.914±0.024[1]
B−V color index 1.128±0.010[1]
Astrometry
Radial velocity (Rv)2.93±0.15[2] km/s
Proper motion (μ) RA: −354.939(22) mas/yr[2]
Dec.: −227.995(15) mas/yr[2]
Parallax (π)28.9723±0.0212 mas[2]
Distance112.58 ± 0.08 ly
(34.52 ± 0.03 pc)
Absolute magnitude (MV)6.86[1]
Details
Mass0.72±0.01[4] M☉
Radius0.70±0.01[4] R☉
Luminosity0.212±0.001[4] L☉
Surface gravity (log g)4.6±0.01[4] cgs
Temperature4,692±9[4] K
Metallicity [Fe/H]−0.03±0.06[5] dex
Rotational velocity (v sin i)1.5[5] km/s
Age10.5±2.6 Gyr[4]
4.3±4[5] Gyr
Other designations
Felixvarela, HIP 2247, SAO 147293, PPM 208851, 2MASS J00283433-1613343[6]
Database references
SIMBADdata
Exoplanet Archivedata

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.[2] The star is rotating slowly with a negligible level of magnetic activity and an age of over 4 billion years.[5]

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.[7][8]

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.[5] An astrometric measurement of the planet's inclination and true mass was published in 2022 as part of Gaia DR3,[9][10] with another astrometric orbital solution published in 2023.[11]

The BD−17 63 planetary system[11]
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

  1. ^ a b c d e f g h 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. XHIP record for this object at VizieR.
  2. ^ a b c d e f g 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.
  3. ^ 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.
  4. ^ 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.
  5. ^ a b c d e 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.
  6. ^ "SIMBAD query result: G 158-84 -- High proper-motion Star". Centre de Données astronomiques de Strasbourg. Retrieved 2009-06-11.
  7. ^ "Approved names". NameExoworlds. Retrieved 2020-01-02.
  8. ^ "International Astronomical Union | IAU". www.iau.org. Archived from the original on 2022-12-05. Retrieved 2020-01-02.
  9. ^ 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.
  10. ^ 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.
  11. ^ a b 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.

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