 Visual band light curves for QS Virginis, adapted from O’Donoghue et al. (2003).[1] The lowest plot shows two pre-eclipse dips. | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Virgo |
| Right ascension | 13h 49m 52.0032s[2] |
| Declination | −13° 13′ 37.0019″[2] |
| Apparent magnitude (V) | +14.8 |
| Characteristics | |
| Spectral type | DAm / M3.5V |
| Astrometry | |
| Proper motion (μ) | RA: 41.618±0.108[2] mas/yr Dec.: 17.984±0.097[2] mas/yr |
| Parallax (π) | 19.9632 ± 0.0584 mas[2] |
| Distance | 163.4 ± 0.5 ly (50.1 ± 0.1 pc) |
| Absolute magnitude (MV) | 11.74 + 11.82[1] |
| Orbit | |
| Period (P) | 217.092 min[1] |
| Semi-major axis (a) | 0.0056 AU |
| Eccentricity (e) | 0.0 |
| Inclination (i) | 60[1]° |
| Details[1] | |
| White dwarf | |
| Mass | 0.78 M☉ |
| Radius | 0.011 R☉ |
| Luminosity | 0.0044[3] L☉ |
| Surface gravity (log g) | 8.34 cgs |
| Temperature | 14,200 K |
| Rotational velocity (v sin i) | 400 km/s |
| Red dwarf | |
| Mass | 0.43 M☉ |
| Radius | 0.42 R☉ |
| Luminosity | 0.015[3] L☉ |
| Temperature | 3,100 K |
| Rotational velocity (v sin i) | 140 km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
QS Virginis (abbreviated QS Vir) is an eclipsing binary system approximately 163 light-years away from the Sun,[1][2] forming a cataclysmic variable. The system comprises an eclipsing white dwarf and red dwarf that orbit each other every 3.37 hours.[1]
- ^ a b c d e f g O'Donoghue; Koen, C.; Kilkenny, D.; Stobie, R. S.; et al. (2003). "The DA+dMe eclipsing binary EC13471-1258: its cup runneth over ... just". Monthly Notices of the Royal Astronomical Society. 345 (2): 506–528. arXiv:astro-ph/0307144. Bibcode:2003MNRAS.345..506O. doi:10.1046/j.1365-8711.2003.06973.x. S2CID 17408072.
- ^ a b c d e f Cite error: The named reference
Gaia DR2was invoked but never defined (see the help page). - ^ a b Calculated from the effective temperature and radius
- ^ Cite error: The named reference
Simbadwas invoked but never defined (see the help page).