[AAVSO LightCurve, 1yr]
[AAVSO LightCurve, 5yr]
GCVS data:
Epoch 2000: ra = 52.799, dec = 43.905
Variability type: NA+XP
Spectral type: pec(NOVA)
GCVS remarks:
SB2 (sdBE + K2IVp). The following types of activity are being observed after the return to the normal brightness: rapid irregular variations (Delta(m) ~0.1m in several minutes); irregular fluctuations from night to night (Delta(m) up to 0.3m); slow irregular variations (Delta(m) = 1.5m in several dozen days); bursts with light increase in 10d - 30d and decrease in 10d - 40d, Delta(m) up to 3.5m, the mean interval between bursts being delta(t) = 820d [09686, 09788]. According to [10198], the radial velocities are represented with the elements Max (Vr > 0) = 2444912.966 + 1.996803d*E (Kabs = 124 km/s, Kem = 34 km/s). According to [10199], the 2d variation is modulated with a period of 0.131623d, Max (delta(Vr)) ~2443787.995 (Kabs = 15 km/s, Kem = 20 km/s). During a burst the sinusoidal modulation of X-ray flux was recorded, Tmax = 24455555.67456 + 0.004066443d*E [09786]. ExpAnding envelope (0.454"/yr, 1948 - 1964; 0.432"/yr, 1964 - 1981, [09787]).
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