A visual band light curve for DM Lyrae, adapted from Nogami et al. (2003). [1] The inset plot shows the superhump variations. | |
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Lyra |
Right ascension | 18h 58m 44.43s [2] |
Declination | +30° 15′ 33.0″ [2] |
Apparent magnitude (V) | +18 (quiet), +13.6 (burst) [2] |
Characteristics | |
Spectral type | ? / White dwarf |
Variable type | SU UMa [1] |
Orbit [3] | |
Period (P) | 0.0654092±0.000002 d |
Periastron epoch (T) | 2,451,343.8565±0.0015 HJD |
Semi-amplitude (K1) (primary) | 37±5 km/s |
Details | |
Donor star | |
Mass | 0.095±0.022 [4] M☉ |
Radius | 0.145±0.011 [4] R☉ |
Other designations | |
Database references | |
SIMBAD | data |
DM Lyrae (DM Lyr for short) is a dwarf nova in the constellation Lyra. This binary system is composed of a primary star of unknown type, and a white dwarf companion. It erupted in 1928 and 1996 and reached about magnitude 13. [1]