EF Boo (Eclipsing binary)

RA: 14h 32m 30.57s, DE: +50° 49' 41.00" (218.1273749950, 50.8280555549)

Data:

  • Constellation: Boo
  • Variability type: EB
  • Maximal brightness (Mag): 9.427 (V)
  • Minimum brightness (Mag): 9.994 (V)
  • Brightness in secondary minimum (Mag): 9.427 (V)
  • Astrophysical interest: Light time effect (LTE)
  • Created: 7/27/1997
  • Created by: admin
Periodic elements:

  • Period (d): 0.420515500000000
  • Epoch (HJD): 51283.68300
  • Secondary Epoch (HJD): 51283.89400
Change log:

11/11/2025, Filip Walter:

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

Number of observations

25 x

Number of observers

10 x

Last observed before

346 days

O-C diagram
Times of minima / maxima - including records from the original O-C gateway  
P: M = 2451283.683 + 0.4205155 * E
S: M = 2451283.894 + 0.4205155 * E
ID HJDmin Error (+/-) UTCmin Epoch O-C (d) P/S Phot. band Observer Publication Note Instrument
Phase curve
Comments

Timeline