V0640 Lac (Eclipsing binary)

RA: 22h 55m 55.50s, DE: +51° 01' 31.00" (343.9812499900, 51.0252777771)

Data:
  • Constellation: Lac
  • Variability type: EW
  • Maximal brightness (Mag): 13.670 (c)
  • Minimum brightness (Mag): 14.260 (c)
  • Brightness in secondary minimum (Mag): 14.210 (c)
  • Astrophysical interest: Possible period changes
  • Created: 1/21/2016
  • Created by: admin
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Periodic elements:
  • Period (d): 0.435950000000000
  • Epoch (JD): 56173.44000
  • Secondary Epoch (JD): 56173.657975 (est.)
Change log:

6/30/2025, Filip Walter:

  • Astrophysical interest: Nothing → Possible period changes

Chart
V0640 Lac
Source: The STScI Digitized Sky Survey
Number of observations

2 x

Number of observers

1 x

Last observed before

0 days

O-C diagram
Times of minima / maxima - including records from the original O-C gateway  
P: M = 2456173.44 + 0.43595 * E
S: M = 2456173.657975 + 0.43595 * E
ID HJDmin UTCmin Epoch O-C (d) P/S Phot. band Observer Publication Note Instrument
Phase curve
Comments

Timeline