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 | |
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
| 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
- List of extrasolar planets
- CM Draconis
- GU Psc b
- HD 106906 b
- Kepler-16
- NN Serpentis
- QS Virginis
- WD 0806-661
References
- 1 2 3 4 5 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
- ↑ Schneider, J. "Notes for Ross 458(AB)". The Extrasolar Planets Encyclopaedia.
External links
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