DT Virginis

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DT Virginis
Observation data
Epoch J2000      Equinox J2000
Constellation Virgo
Right ascension  13h 00m 46.5603s[1]
Declination +12° 22′ 32.7168″[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: −632.151±0.502[1] mas/yr
Dec.: −36.019±0.187[1] mas/yr
Parallax (π)86.8570 ± 0.1515[1] mas
Distance37.55 ± 0.07 ly
(11.51 ± 0.02 pc)
Absolute magnitude (MV)11.17
Other designations
BD+13° 2618, GJ 494, HIP 63510, LHS 2665, LTT 13752, Ross 458, Wolf 462[2]
Database references
SIMBADdata
ARICNSdata

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[edit]

The DT Virginis planetary system[3]
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[edit]

References[edit]

  1. ^ a b c d e Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  2. ^ "DT Virginis". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-09-07.
  3. ^ Schneider, J. "Notes for Ross 458(AB)". The Extrasolar Planets Encyclopaedia. Archived from the original on 2011-10-06.

External links[edit]