T-Lyr1-22894 (Eclipsing binary)

RA: 19h 11m 37.03s, DE: +49° 17' 13.26" (287.9042809493, 49.2870167771)

Tic: TIC 298835973, TwoMass: 2MASS J19113702+4917132, Other: ZTF J191137.02+491713.2, Other: T-Lyr1-22894

Data:

  • Constellation: Cyg
  • Variability type: EW
  • Maximal brightness (Mag): 14.956
  • Minimum brightness (Mag): 15.354
  • Brightness in secondary minimum (Mag): 15.203
  • Astrophysical interest: Possible period changes
  • Created: 10/24/2025
  • Created by: Ladislav Šmelcer
Periodic elements:

  • Period (d): 0.496900400000000
  • Epoch (JD): 2458229.92560
  • Secondary Epoch (JD): 2458230.1740502 (est.)
Change log:

10/25/2025, Filip Walter:

  • Astrophysical interest: Nothing → Possible period changes
  • Epoch: Null → 2458229.9256
  • Period: Null → 0.4969004
  • Variability type: EB* → EW
  • Brightness in secondary minimum: Null → 15.203
  • Minimum brightness: Null → 15.354
  • Maximal brightness: Null → 14.956
  • Name: ZTF J191137.02+491713.2 → T-Lyr1-22894
  • Eclipsing binary: False → True
  • Alternative designation: Tic: TIC 298835973, TwoMass: 2MASS J19113702+4917132 → Tic: TIC 298835973, TwoMass: 2MASS J19113702+4917132, : ZTF J191137.02+491713.2, : T-Lyr1-22894

Number of observations

1 x

Number of observers

1 x

Last observed before

1 days

O-C diagram
Times of minima / maxima - including records from the original O-C gateway  
P: M = 2458229.9256 + 0.4969004 * E
S: M = 2458230.1740502 + 0.4969004 * E
ID HJDmin UTCmin Epoch O-C (d) P/S Phot. band Observer Publication Note Instrument
Phase curve
Comments

Timeline