 The visual band light curve of LL Andromedae, adapted from Kato (2004), is shown. The main plot shows the decay from peak brightness, and the inset plot shows an average of the superhumps.[1] | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Andromeda |
| Right ascension | 00h 41m 51.49298s[2] |
| Declination | +26° 37′ 21.0438″[2] |
| Apparent magnitude (V) | 14.3–19.4 variable[1] |
| Characteristics | |
| Variable type | Dwarf nova[3] |
| Astrometry | |
| Proper motion (μ) | RA: 18.319(914)[2] mas/yr Dec.: −18.595(511)[2] mas/yr |
| Parallax (π) | 1.5508 ± 0.6312 mas[2] |
| Distance | approx. 2,100 ly (approx. 600 pc) |
| Orbit[4] | |
| Period (P) | 1.32 hours |
| Inclination (i) | 45° |
| Database references | |
| SIMBAD | data |
LL Andromedae (often abbreviated to LL And) is a dwarf nova in the constellation Andromeda, discovered during an outburst in 1979. Its typical apparent visual magnitude is 19.4, but undergoes outbursts events when can reach a peak magnitude of 14.3.[1] Since this magnitude is reached during the most powerful outbursts, while less bright outbursts can occur, it is classified as a SU Ursae Majoris variable.[3]
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