NSVS 1421629 (Eclipsing binary)

RA: 22h 57m 55.92s, DE: +80° 52' 06.96" (344.4830000000, 80.8686000000)

Gaia: Gaia DR3 2286118805701621504, Tic: TIC 396454247, Tyc: TYC 4613-1199-1, Gsc: GSC 04613-01199, Nsvs: NSVS 139982, Other: ASASSN-V J225755.82+805207.5

Data:
  • Constellation: Cep
  • Variability type: EW
  • Maximal brightness (Mag): 11.050 (V)
  • Minimum brightness (Mag): 11.550 (V)
  • Brightness in secondary minimum (Mag): 11.520 (V)
  • Created: 6/21/2026
  • Created by: Mikhail Ashchepkau
Show list of observations >>
Periodic elements:
  • Period (d): 0.368764500000000
  • Epoch (HJD): 2460179.84620
  • Secondary Epoch (HJD): 2460180.03058225 (est.)
Change log:

6/25/2026, Mikhail Ashchepkau:

  • Epoch: 2461167.9509 → 2460179.8462

6/25/2026, Jan Hykel:

  • Epoch: 2461167.95 → 2461167.9509
  • Epoch: 2460634.9001 → 2461167.95
  • Period: 0.3688015 → 0.3687645
  • Astrophysical interest: Sudden period changes → Nothing

Chart
NSVS 1421629
Source: The STScI Digitized Sky Survey, FoV: 15 x 15 arcmin
Number of observations

2 x

Number of observers

1 x

Last observed before

5 days

O-C diagram
Times of minima / maxima - including records from the original O-C gateway  
P: M = 2460179.8462 + 0.3687645 * E
S: M = 2460180.03058225 + 0.3687645 * E
ID HJDmin Error (+/-) UTCmin Epoch O-C (d) P/S Phot. band Observer Publication Note Instrument
Phase curve
Comments

Timeline