DT Virginis
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.
| 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 |
| Distance | 37.55 ± 0.07 ly (11.51 ± 0.02 pc) |
| Absolute magnitude (MV) | 11.17 |
| Other designations | |
| Database references | |
| SIMBAD | data |
| ARICNS | data |
Planetary system
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (years) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 8.5 ± 2.5 MJ | 1168 | 33081 | — | — | — |
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See also
References
- 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.
- "DT Virginis". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-09-07.
- Schneider, J. "Notes for Ross 458(AB)". The Extrasolar Planets Encyclopaedia. Archived from the original on 2011-10-06.
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