BS UMa (Eclipsing binary, Eruptive variable)

RA: 11h 25m 41.60s, DE: +42° 34' 49.10" (171.4233333233, 42.5803055549)

Data:
  • Constellation: UMa
  • Variability type: EA+BY+UV
  • Maximal brightness (Mag): 13.700 (P)
  • Minimum brightness (Mag): 14.000 (P)
  • Brightness in secondary minimum (Mag): 14.000 (P)
  • Astrophysical interest: Peaks on the light curve
  • Created: 7/1/1997
  • Created by: admin
Show list of observations >>
Periodic elements:
  • Period (d): 0.349509900000000
  • Epoch (JD): 37347.69900
  • Secondary Epoch (JD): 37347.52400

Additional:

Long-term spot cycle

  • Period (d): 3300.000000000000000
Change log:

6/26/2025, Filip Walter:

  • Additional orbital elements: → { "Name": "Long-term spot cycle", "Period": 3300. }
  • Variability type: EA → EA+BY+UV
  • Astrophysical interest: Nothing → Peaks on the light curve
  • Eruptive variable: False → True

Chart
BS UMa
Source: The STScI Digitized Sky Survey
Number of observations

10 x

Number of observers

7 x

Last observed before

36 days

O-C diagram
Times of minima / maxima - including records from the original O-C gateway  
P: M = 2437347.699 + 0.3495099 * E
S: M = 2437347.524 + 0.3495099 * E
ID HJDmin UTCmin Epoch O-C (d) P/S Phot. band Observer Publication Note Instrument
Phase curve
Comments

Timeline