AA UMa (Eclipsing binary)

RA: 09h 46m 59.29s, DE: +45° 45' 56.40" (146.7470416567, 45.7656666667)

Data:
  • Constellation: UMa
  • Variability type: EW
  • Maximal brightness (Mag): 10.880 (V)
  • Minimum brightness (Mag): 11.580 (V)
  • Brightness in secondary minimum (Mag): 11.530 (V)
  • Astrophysical interest: Light time effect (LTE), Period increasing
  • Created: 6/1/1996
  • Created by: admin
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Periodic elements:
  • Period (d): 0.468127000000000
  • Epoch (HJD): 26796.17700
  • Secondary Epoch (HJD): 26796.41100
Possible duplicated objects:
Change log:

12/29/2025, Filip Walter:

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

Chart
AA UMa
Source: The STScI Digitized Sky Survey, FoV: 15 x 15 arcmin
Number of observations

62 x

Number of observers

11 x

Last observed before

11 days

O-C diagram
Times of minima / maxima - including records from the original O-C gateway  
P: M = 2426796.177 + 0.468127 * E
S: M = 2426796.411 + 0.468127 * E
ID HJDmin Error (+/-) UTCmin Epoch O-C (d) P/S Phot. band Observer Publication Note Instrument
Phase curve
Comments

Timeline