GQ Dra (Eclipsing binary)

RA: 17h 25m 29.44s, DE: +51° 29' 35.10" (261.3726666567, 51.4930833330)

Data:

  • Constellation: Dra
  • Variability type: EB
  • Maximal brightness (Mag): 8.979 (V)
  • Minimum brightness (Mag): 9.423 (V)
  • Brightness in secondary minimum (Mag): 8.979 (V)
  • Astrophysical interest: Light time effect (LTE)
  • Created: 7/27/1997
  • Created by: admin
Periodic elements:

  • Period (d): 0.765903000000000
  • Epoch (HJD): 48500.56300
  • Secondary Epoch (HJD): 48500.94600
Change log:

11/17/2025, Filip Walter:

  • Astrophysical interest: Nothing → Light time effect (LTE)

Number of observations

31 x

Number of observers

7 x

Last observed before

960 days

O-C diagram
Times of minima / maxima - including records from the original O-C gateway  
P: M = 2448500.563 + 0.765903 * E
S: M = 2448500.946 + 0.765903 * E
ID HJDmin Error (+/-) UTCmin Epoch O-C (d) P/S Phot. band Observer Publication Note Instrument
Phase curve
Comments

Timeline