MR Del (Eclipsing binary)

RA: 20h 31m 13.47s, DE: +05° 13' 08.50" (307.8061249900, 5.2190277771)

Data:

  • Constellation: Del
  • Variability type: EA
  • Maximal brightness (Mag): 8.850 (V)
  • Minimum brightness (Mag): 9.160 (V)
  • Brightness in secondary minimum (Mag): 8.850 (V)
  • Astrophysical interest: Light time effect (LTE)
  • Created: 7/27/1997
  • Created by: admin
Periodic elements:

  • Period (d): 0.521689500000000
  • Epoch (HJD): 48500.51600
  • Secondary Epoch (HJD): 48500.77700
Change log:

9/24/2025, Filip Walter:

  • Name: MR → MR Del

9/21/2025, Filip Walter:

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

Number of observations

26 x

Number of observers

9 x

Last observed before

195 days

O-C diagram
Times of minima / maxima - including records from the original O-C gateway  
P: M = 2448500.516 + 0.5216895 * E
S: M = 2448500.777 + 0.5216895 * E
ID HJDmin Error (+/-) UTCmin Epoch O-C (d) P/S Phot. band Observer Publication Note Instrument
Phase curve
Comments

Timeline