 Illustration of a system with a accreting red dwarf and a low-mass donor companion, similar to YZ Leonis Minoris. | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Leo Minor[1] |
| Right ascension | 09h 26m 38.725s[2] |
| Declination | 36° 24′ 02.456″[2] |
| Apparent magnitude (V) | 19.33±0.31[3] (mean)[a][b] |
| Characteristics | |
| Evolutionary stage | White dwarf |
| Spectral type | DB[2] |
| Apparent magnitude (G) | 19.27[2] |
| Variable type | AM Canum Venaticorum Eclipsing binary SU Ursae Majoris[1] |
| Donor companion | |
| Evolutionary stage | Helium-rich star[4] |
| Astrometry | |
| Proper motion (μ) | RA: −31.6±0.203 mas/yr[2] Dec.: −3.672±0.112 mas/yr[2] |
| Parallax (π) | 1.227 ± 0.208 mas[5] |
| Distance | 2657±450 ly (815±138 pc)[5] |
| Orbit | |
| Primary | A |
| Period (P) | 28.3 minutes[4] |
| Semi-major axis (a) | 0.29 R☉[5] |
| Inclination (i) | 83.1±0.1[6]° |
| Details[7] | |
| White dwarf | |
| Mass | 0.79–0.89 M☉ |
| Radius | 0.01 R☉ |
| Radius | 6,957 km |
| Luminosity | 0.00946–0.0352[c] L☉ |
| Surface gravity (log g) | 8.3 cgs |
| Temperature | 18,000–25,000 K |
| Donor companion | |
| Mass | 0.027–0.038 M☉ |
| Radius | 0.043 R☉ |
| Luminosity | 0.00035[d] L☉ |
| Surface gravity (log g) | 5.6 cgs |
| Temperature | 3,570±130[5] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
YZ Leonis Minoris, also known as SDSS J0926+3624, is a star system in the constellation Leo Minor. It is an AM Canum Venaticorum-type variable star, a type of binary systems with ultra-short periods (between 5 and 70 minutes). It is also an eclipsing binary. The apparent magnitude of the system is generally 19.3m, varying by about two magnitudes due to periodic eclipses and outbursts. The distance to YZ LMi is of 815 pc (2,660 ly).
- ^ a b c Cite error: The named reference
:2was invoked but never defined (see the help page). - ^ a b c d e f "YZ LMi". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2024-04-05.
- ^ Cite error: The named reference
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