ER Vul (Eclipsing binary, Eruptive variable)

RA: 21h 02m 25.91s, DE: +27° 48' 26.50" (315.6079583283, 27.8073611111)

Data:
  • Constellation: Vul
  • Variability type: EW + UV
  • Maximal brightness (Mag): 7.270 (V)
  • Minimum brightness (Mag): 7.490 (V)
  • Brightness in secondary minimum (Mag): 7.490 (V)
  • Astrophysical interest: Peaks on the light curve
  • Created: 6/1/1996
  • Created by: admin
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Periodic elements:
  • Period (d): 0.698095000000000
  • Epoch (HJD): 40182.26000
  • Secondary Epoch (HJD): 40182.60900
Change log:

12/21/2025, Filip Walter:

  • Variability type: EW → EW + UV
  • Astrophysical interest: Nothing → Peaks on the light curve
  • Eruptive variable: False → True

Chart
ER Vul
Source: The STScI Digitized Sky Survey
Number of observations

106 x

Number of observers

8 x

Last observed before

1240 days

O-C diagram
Times of minima / maxima - including records from the original O-C gateway  
P: M = 2440182.26 + 0.698095 * E
S: M = 2440182.609 + 0.698095 * E
ID HJDmin Error (+/-) UTCmin Epoch O-C (d) P/S Phot. band Observer Publication Note Instrument
Phase curve
Comments

Timeline