BS Cas (Eclipsing binary)

RA: 01h 21m 38.57s, DE: +59° 10' 27.01" (20.4107100000, 59.1741700000)

AsasSnV: ASASSN-V J012138.55+591027.4, Ato: ATO J020.4107+59.1741, Gaia: Gaia DR3 414023787807414400, Gcvs: BS Cas, Gsc: GSC 03682-01152, Nsvs: NSVS 1740647, Tic: TIC 369992913, TwoMass: 2MASS J01213857+5910268, Tyc: TYC 3682-1152-1, Other: AN 366.1931, Other: IOMC 3682000064, Other: SVS 275

Data:
  • Constellation: Cas
  • Variability type: EW/KW
  • Maximal brightness (Mag): 12.200 (P)
  • Minimum brightness (Mag): 12.600 (P)
  • Brightness in secondary minimum (Mag): 12.600 (P)
  • Astrophysical interest: Light time effect (LTE), Period decreasing
  • Created: 4/9/2007
  • Created by: admin
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Periodic elements:
  • Period (d): 0.440469000000000
  • Epoch (HJD): 48562.44500
  • Secondary Epoch (HJD): 48562.66500
Change log:

10/1/2026, Filip Walter:

  • Variability type: EW → EW/KW
  • Declination: 59.174166666 → 59.17417
  • Right ascension: 20.4107083333 → 20.41071
  • Name: BS → BS Cas
  • Astrophysical interest: Nothing → Light time effect (LTE), Period decreasing
  • CI: Tyc: Null → TYC 3682-1152-1
  • CI: TwoMass: Null → 2MASS J01213857+5910268
  • CI: Tic: Null → TIC 369992913
  • CI: Other: Null → AN 366.1931, IOMC 3682000064, SVS 275
  • CI: Nsvs: Null → NSVS 1740647
  • CI: Gsc: Null → GSC 03682-01152
  • CI: Gcvs: Null → BS Cas
  • CI: Gaia: Null → Gaia DR3 414023787807414400
  • CI: Ato: Null → ATO J020.4107+59.1741
  • CI: AsasSnV: Null → ASASSN-V J012138.55+591027.4

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

64 x

Number of observers

14 x

Last observed before

1 days

O-C diagram
Times of minima / maxima - including records from the original O-C gateway  
P: M = 2448562.445 + 0.440469 * E
S: M = 2448562.665 + 0.440469 * E
ID HJDmin Error (+/-) UTCmin Epoch O-C (d) P/S Phot. band Observer Publication Note Instrument
Phase curve
Comments

Timeline