BD-08°2823

BD-08°2823

Observation data Epoch J2000.0      Equinox J2000.0
Constellation	Sextans
Right ascension	10^h 00^m 47.7213^s
Declination	–09° 31′ 00.046″
Apparent magnitude (V)	9.86
Characteristics
Spectral type	K3V
Apparent magnitude (B)	10.93
Apparent magnitude (J)	7.960
Apparent magnitude (H)	7.498
Apparent magnitude (K)	7.323
B−V color index	1.071
Astrometry
Proper motion (μ)	RA: –373.95 mas/yr Dec.: 25.35 mas/yr
Parallax (π)	23.76 ± 1.61 mas
Distance	137 ± 9 ly (42 ± 3 pc)
Absolute magnitude (MV)	6.74
Details
Mass	0.74 ± 0.07 M☉
Radius	0.66 ± 0.09 R☉
Luminosity	0.20 L☉
Surface gravity (log g)	4.13 ± 0.26 cgs
Temperature	4746 ± 63 K
Metallicity	-0.07 ± 0.03
Rotation	26.6 ± 1.5 days
Rotational velocity (v sin i)	1.4 km/s
Age	4.5 ± 4 Gyr
Other designations
HIP 49067, LTT 3669, NLTT 23181, PPM 192987, Ross 444, SAO 137286
Database references
SIMBAD	data
Exoplanet Archive	data
Extrasolar Planets Encyclopaedia	data

BD-08°2823 is a 9.86 magnitude K-type main sequence star located approximately 137 light years away in the constellation Sextans. This star is smaller, cooler, fainter, and less massive than our Sun. Also its metal content is six-sevenths as much as the Sun. In 2009, two gas giant planets were found in orbit around the star.

The BD-08°2823 planetary system^[1]

Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
b	≥0.045 ± 0.007 MJ	0.056 ± 0.002	5.60 ± 0.02	0.15 ± 0.15	—	—
c	≥0.33 ± 0.03 MJ	0.68 ± 0.02	237.6 ± 1.5	0.19 ± 0.09	—	—

See also

• List of extrasolar planets

References

1. Hébrard, G.; et al. (2010). "The HARPS search for southern extra-solar planets XX. Planets around the active star BD -08°2823". Astronomy and Astrophysics 512. arXiv:0912.3202. Bibcode:2010A&A...512A..46H. doi:10.1051/0004-6361/200913525. web preprint

Coordinates: 10^h 00^m 47.7213^s, −09° 31′ 00.046″