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.

BD−17 63

Observation data Epoch J2000      Equinox J2000
Constellation	Cetus
Right ascension	00^h 28^m 34.3061^s[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
Felixvarela, 2MASS J00283433-1613343, SAO 147293, HIP 2247, PPM 208851
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]

The BD−17 63 planetary system[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

1. 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.
2. "SIMBAD query result: G 158-84 -- High proper-motion Star". Centre de Données astronomiques de Strasbourg. Retrieved 2009-06-11.
3. 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.
4. "Approved names". NameExoworlds. Retrieved 2020-01-02.
5. "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-01-02.
6. 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.