V2240 Cyg (Eclipsing binary)

RA: 20h 15m 55.94s, DE: +37° 27' 15.53" (303.9830958333, 37.4543138889)

CzeV: CzeV4, Gcvs: V2240 Cyg, Gsc: GSC 02684-01255, Ucac4: UCAC4 638-091827

Data:
  • Constellation: Cyg
  • Variability type: EW
  • Maximal brightness (Mag): 12.030
  • Minimum brightness (Mag): 12.290
  • Created: 7/30/2014
  • Created by: admin
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Periodic elements:
  • Period (d): 0.404161000000000
  • Epoch (JD): 2456518.97230
  • Secondary Epoch (JD): 2456519.1743805 (est.)
Additional data:
  • Discoverer: Šafář
  • Discovery year: 1999
  • Publication: IBVS4818
Change log:

11/25/2024, Jan Hykel:

  • Photometric band: → Null
  • Alternative designation: CzeV: CzeV4 Cyg → CzeV: CzeV4 Cyg, Gcvs: V2240 Cyg

Chart
V2240 Cyg
Source: The STScI Digitized Sky Survey
Number of observations

92 x

Number of observers

5 x

Last observed before

580 days

O-C diagram
Times of minima / maxima - including records from the original O-C gateway  
P: M = 2456518.9723 + 0.404161 * E
S: M = 2456519.1743805 + 0.404161 * E
ID HJDmin UTCmin Epoch O-C (d) P/S Phot. band Observer Publication Note Instrument
Phase curve
Comments

Timeline