bet Lyr (Eclipsing binary)

RA: 18h 50m 04.79s, DE: +33° 21' 45.60" (282.5199583283, 33.3626666667)

Aavso: AAVSO 1846+33, AsasSnV: ASASSN-V J185120.79+332128.7, Gaia: Gaia DR3 2090687795056051328, Gcvs: bet Lyr, Gsc: GSC 02642-02929, Hd: HD 174638, Hd: HD 174639, Hip: HIP 92420, Tic: TIC 28569279, TwoMass: 2MASS J18500479+3321455, Tyc: TYC 2642-2929-1, Other: 10 Lyr, Other: ADS 11745 A, Other: BD+33 3223, Other: HR 7106, Other: IRC +30343

Data:
  • Constellation: Lyr
  • Variability type: DPV:/EB
  • Maximal brightness (Mag): 3.250 (V)
  • Minimum brightness (Mag): 4.360 (V)
  • Brightness in secondary minimum (Mag): 3.850 (V)
  • Created: 6/1/1996
  • Created by: admin
Show list of observations >>
Periodic elements:
  • Period (d): 12.938100000000000
  • Epoch (HJD): 41540.31000
  • Secondary Epoch (HJD): 41546.78000
Change log:

9/1/2026, Filip Walter:

  • Variability type: → DPV:/EB
  • CI: Tyc: Null → TYC 2642-2929-1
  • CI: TwoMass: Null → 2MASS J18500479+3321455
  • CI: Tic: Null → TIC 28569279
  • CI: Other: Null → 10 Lyr, ADS 11745 A, BD+33 3223, HR 7106, IRC +30343
  • CI: Hip: Null → HIP 92420
  • CI: Hd: Null → HD 174638, HD 174639
  • CI: Gsc: Null → GSC 02642-02929
  • CI: Gcvs: Null → bet Lyr
  • CI: Gaia: Null → Gaia DR3 2090687795056051328
  • CI: AsasSnV: Null → ASASSN-V J185120.79+332128.7
  • CI: Aavso: Null → AAVSO 1846+33

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

23 x

Number of observers

1 x

Last observed before

5415 days

O-C diagram
Times of minima / maxima - including records from the original O-C gateway  
P: M = 2441540.31 + 12.9381 * E
S: M = 2441546.78 + 12.9381 * E
ID HJDmin Error (+/-) UTCmin Epoch O-C (d) P/S Phot. band Observer Publication Note Instrument
Phase curve
Comments

Timeline