MZ Lac (Eclipsing binary)

RA: 22h 28m 01.73s, DE: +53° 41' 00.10" (337.0072083233, 53.6833611108)

Tic: TIC 197755658, Tyc: TYC 3983-1644-1, Gsc: GSC 03983-01644, TwoMass: 2MASS J22280174+5341000, Gcvs: MZ Lac, Gaia: Gaia DR3 2001819286713535360

Data:
  • Constellation: Lac
  • Variability type: EA
  • Maximal brightness (Mag): 11.200 (P)
  • Minimum brightness (Mag): 12.100 (P)
  • Brightness in secondary minimum (Mag): 12.100 (P)
  • D (h): 4.550
  • Astrophysical interest: Excentric orbit of the binary, Apsidal motion
  • Created: 6/1/1996
  • Created by: admin
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Periodic elements:
  • Period (d): 3.158818000000000
  • Epoch (HJD): 33873.59400
  • Secondary Epoch (HJD): 33875.17340
Change log:

1/22/2026, Filip Walter:

  • D: Null → 4.55
  • Name: MZ → MZ Lac
  • Astrophysical interest: Nothing → Excentric orbit of the binary, Apsidal motion
  • Alternative designation: → Tic: TIC 197755658, Tyc: TYC 3983-1644-1, Gsc: GSC 03983-01644, TwoMass: 2MASS J22280174+5341000, Gcvs: MZ Lac, Gaia: Gaia DR3 2001819286713535360

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

65 x

Number of observers

10 x

Last observed before

19 days

O-C diagram
Times of minima / maxima - including records from the original O-C gateway  
P: M = 2433873.594 + 3.158818 * E
S: M = 2433875.1734 + 3.158818 * E
ID HJDmin Error (+/-) UTCmin Epoch O-C (d) P/S Phot. band Observer Publication Note Instrument
Phase curve
Comments

Timeline