BD-17°63
From Infogalactic: the planetary knowledge core
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Cetus |
| Right ascension | 00h 28m 34.31s[1] |
| Declination | −16° 13′ 34.8″[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: –353.78 ± 1.45[1] mas/yr Dec.: –228.96 ± 0.90[1] mas/yr |
| Parallax (π) | 28.01 ± 1.27[1] mas |
| Distance | 116 ± 5 ly (36 ± 2 pc) |
| Absolute magnitude (MV) | 6.87 |
| Details | |
| Mass | 0.74 ± 0.03 M☉ |
| Radius | 0.69 R☉ |
| Luminosity | 0.21 L☉ |
| Temperature | 4714 ± 93 K |
| Metallicity [Fe/H] | –0.03 ± 0.06 dex |
| Age | 4.3 ± 4 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| Extrasolar Planets Encyclopaedia |
data |
BD-17°63 is an low-mass K type star in the southern constellation Cetus. It is a 9th magnitude star at a distance of about 116 light years from Earth.[1]
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.[3]
| 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
References
External links
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Coordinates: 
00h 28m 34.306s, −16° 13′ 34.84″
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