BD–08 2823

BD-08°2823
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Sextans
Right ascension 10h 00m 47.7213s
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
Distance137 ± 9 ly
(42 ± 3 pc)
Absolute magnitude (MV)6.74
Details
Mass0.74 ± 0.07 M☉
Radius0.66 ± 0.09 R☉
Luminosity0.20 L☉
Surface gravity (log g)4.13 ± 0.26 cgs
Temperature4746 ± 63 K
Metallicity-0.07 ± 0.03
Rotation26.6 ± 1.5 days
Rotational velocity (v sin i)1.4 km/s
Age4.5 ± 4 Gyr
Other designations
HIP 49067, LTT 3669, NLTT 23181, PPM 192987, Ross 444, SAO 137286
Database references
SIMBADdata
Exoplanet Archivedata
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

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: 10h 00m 47.7213s, −09° 31′ 00.046″


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