AM Canum Venaticorum
AM Canum Venaticorum (AM CVn) is a hydrogen-deficient cataclysmic variable binary star in the constellation of Canes Venatici. It is the type star of its class of variables, the AM Canum Venaticorum stars. The system consists of a white dwarf gaining matter via an accretion disk from a semi-degenerate or white dwarf companion.
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Canes Venatici |
| Right ascension | 12h 34m 54.60s |
| Declination | +37° 37′ 44.1″ |
| Apparent magnitude (V) | +14.02 (13.7–14.2) |
| Characteristics | |
| Spectral type | DBp |
| U−B color index | −1.01 |
| B−V color index | −0.23 |
| Variable type | AM CVn |
| Astrometry | |
| Proper motion (μ) | RA: 30.935 mas/yr Dec.: 12.420 mas/yr |
| Parallax (π) | 3.3512 ± 0.0452 mas |
| Distance | 970 ± 10 ly (298 ± 4 pc) |
| Absolute magnitude (MV) | 4.90+0.37 −0.45 |
| Orbit | |
| Period (P) | 1,028.7322±0.0003 s (17:08.732±0.018 min) |
| Inclination (i) | 43±2° |
| Details | |
| WD | |
| Mass | 0.6 M☉ |
| Radius | 0.0137 R☉ |
| Temperature | 100,000 K |
| donor | |
| Mass | 0.1 M☉ |
| Other designations | |
| Database references | |
| SIMBAD | data |
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