00h28m34.306s, −16° 13′ 34.84″| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cetus |
| Right ascension | 00h28m 34.306s[1] |
| Declination | −16° 13′ 34.84″[1] |
| Apparent magnitude (V) | 9.62[2] |
| Characteristics | |
| Spectral type | K4V(k)[3] |
| Apparent magnitude (B) | 10.748[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] |
| B−V color index | 1.128±0.010[2] |
| Astrometry | |
| Radial velocity (Rv) | 2.93±0.15[1] km/s |
| Proper motion (μ) | RA: −354.939(22) mas/yr[1] Dec.: −227.995(15) mas/yr[1] |
| Parallax (π) | 28.9723 ± 0.0212 mas[1] |
| Distance | 112.58 ± 0.08 ly (34.52 ± 0.03 pc) |
| Absolute magnitude (MV) | 6.86[2] |
| Details | |
| Mass | 0.72±0.01[4] M☉ |
| Radius | 0.70±0.01[4] R☉ |
| Luminosity | 0.212±0.001[4] L☉ |
| Surface gravity (log g) | 4.6±0.01[4] cgs |
| Temperature | 4,692±9[4] K |
| Metallicity [Fe/H] | −0.03±0.06[5] dex |
| Rotational velocity (v sin i) | 1.5[5] km/s |
| Age | 10.5±2.6 Gyr[4] 4.3±4[5] Gyr |
| Other designations | |
Felixvarela, HIP 2247, SAO 147293, PPM 208851, 2MASS J00283433-1613343[6] | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
BD−17 63 is a low-mass 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.[1] 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]
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]Anastrometric 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]
| 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° |
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