DT Virginis

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DT Virginis
Observation data
Epoch J2000      Equinox J2000
Constellation Virgo
Right ascension 13h 00m 46.583s[1]
Declination +12° 22′ 32.63″[1]
Apparent magnitude (V) 9.72
Characteristics
Spectral type M0.5/M7
Variable type None
Astrometry
Radial velocity (Rv) −10.1 km/s
Proper motion (μ) RA: −616.31 ± 1.51[1] mas/yr
Dec.: −13.59 ± 1.00[1] mas/yr
Parallax (π) 85.54 ± 1.53[1] mas
Distance 38.1 ± 0.7 ly
(11.7 ± 0.2 pc)
Absolute magnitude (MV) 11.17
Other designations
G 60-57, BD+13° 2618, GJ 494, Wolf 462, HIP 63510, Ross 458, LHS 2665, G 61-27, LTT 13752.
Database references
SIMBAD data
ARICNS data

DT Virginis, also known as Ross 458 AB, is a binary star in the constellation of Virgo. Both of the stars are low-mass red dwarfs with at least one of them being a flare star. This binary system has a circumbinary planet detected by direct imaging, currently the planetary-mass object with the widest known orbit around a binary star.

Planetary system

The DT Virginis planetary system[2]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(years)
Eccentricity Inclination Radius
b 8.5 ± 2.5 MJ 1168 33081

See also

References

  1. ^ a b c d e 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. ^ Schneider, J. "Notes for Ross 458(AB)". The Extrasolar Planets Encyclopaedia. Archived from the original on 2011-10-06.

External links

  • Simbad
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