V0477 Cyg (Eclipsing binary)

RA: 20h 05m 27.69s, DE: +31° 58' 18.12" (301.3653700000, 31.9717000000)

Tic: TIC 89522181, Gsc: GSC 02674-00736, Hd: HD 190786, Tyc: TYC 2674-736-1, Gcvs: V477 Cyg, TwoMass: 2MASS J20052768+3158180, Gaia: Gaia DR3 2031022212482338048, Aavso: AAVSO 2001+31, AsasSnV: ASASSN-V J200527.56+315819.2, Gcvs: V0477 Cyg, Hip: HIP 98955, Other: BD+31 3932, Other: IOMC 2674000056, Other: SAO 69381, Other: WISEA J200527.70+315818.0

Data:
  • Constellation: Cyg
  • Variability type: EA+HB
  • Maximal brightness (Mag): 8.500 (V)
  • Minimum brightness (Mag): 9.340 (V)
  • Brightness in secondary minimum (Mag): 8.690 (V)
  • D (h): 3.943
  • Astrophysical interest: Apsidal motion, Excentric orbit of the binary
  • Created: 6/1/1996
  • Created by: admin
Show list of observations >>
Periodic elements:
  • Period (d): 2.346980000000000
  • Epoch (HJD): 44189.25400
  • Secondary Epoch (HJD): 44190.02700
Change log:

10/24/2026, Filip Walter:

  • Variability type: EA,disp → EA+HB
  • Declination: 31.9716944438 → 31.9717
  • Right ascension: 301.365374995 → 301.36537
  • CI: Other: Null → BD+31 3932, IOMC 2674000056, SAO 69381, WISEA J200527.70+315818.0
  • CI: Hip: Null → HIP 98955
  • CI: Gcvs: V477 Cyg → V0477 Cyg, V477 Cyg
  • CI: AsasSnV: Null → ASASSN-V J200527.56+315819.2
  • CI: Aavso: Null → AAVSO 2001+31

1/31/2026, Filip Walter:

  • Name: V0477 → V0477 Cyg
  • Alternative designation: → Tic: TIC 89522181, Gsc: GSC 02674-00736, Hd: HD 190786, Tyc: TYC 2674-736-1, Gcvs: V477 Cyg, TwoMass: 2MASS J20052768+3158180, Gaia: Gaia DR3 2031022212482338048

1/22/2026, Filip Walter:

  • D: Null → 3.943

1/21/2026, Filip Walter:

  • Astrophysical interest: Nothing → Apsidal motion, Excentric orbit of the binary

Chart
V0477 Cyg
Source: The STScI Digitized Sky Survey, FoV: 15 x 15 arcmin
Number of observations

19 x

Number of observers

12 x

Last observed before

24 days

O-C diagram
Times of minima / maxima - including records from the original O-C gateway  
P: M = 2444189.254 + 2.34698 * E
S: M = 2444190.027 + 2.34698 * E
ID HJDmin Error (+/-) UTCmin Epoch O-C (d) P/S Phot. band Observer Publication Note Instrument
Phase curve
Comments

Timeline