HD 85390

HD 85390
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Vela
Right ascension 09h 50m 02.497s[1]
Declination –49° 47′ 24.97″[1]
Apparent magnitude (V) 8.55
Characteristics
Spectral type K1.5V
Apparent magnitude (B) 9.40
Apparent magnitude (J) 7.012
Apparent magnitude (H) 6.612
Apparent magnitude (K) 6.491
B−V color index 0.85
Astrometry
Radial velocity (Rv)32.5 km/s
Proper motion (μ) RA: 24.32 ± 0.5[1] 7 mas/yr
Dec.: –60.59 ± 0.52[1] mas/yr
Parallax (π)30.89 ± 0.62[1] mas
Distance106 ± 2 ly
(32.4 ± 0.6 pc)
Absolute magnitude (MV)5.896
Details
Mass0.80 M☉
Radius0.82 ± 0.06 R☉
Luminosity0.431 ± 0.031 L☉
Surface gravity (log g)4.38 cgs
Temperature5170 ± 100 K
Metallicity [Fe/H]–0.07 dex
Other designations
CD–49°4727, HIP 48235, PPM 314721, SAO 221526
Database references
SIMBADdata
Exoplanet Archivedata
Extrasolar Planets
Encyclopaedia		data

HD 85390 is a main sequence star of spectral class K1 located approximately 106 light years away[1] in the constellation Vela, appearing as 8.55 magnitude star. This star is smaller, cooler, dimmer, and less massive than our Sun. Also its metal content is seven-sixths as much as the Sun. In 2009, a planet with a minimum mass of about 1/7 of Jupiter's was found in orbit around the star.

The HD 85390 planetary system[2]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b ≥42.0 ± 3.6 M⊕ 1.52 ± 0.04 788 ± 25 0.41 ± 0.12 — —

See also

References

  1. 1 2 3 4 5 6 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
  2. ↑ Mordasini, C.; et al. (2011). "The HARPS search for southern extrasolar planets XXIV. Companions to HD 85390, HD 90156, and HD 103197: a Neptune analog and two intermediate-mass planets". Astronomy and Astrophysics. 526. A111. arXiv:1010.0856. Bibcode:2011A&A...526A.111M. doi:10.1051/0004-6361/200913521.

Coordinates: 09h 50m 02.4969s, −49° 47′ 24.959″


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