HL Dra (Eclipsing binary)

RA: 18h 34m 26.30s, DE: +57° 48' 06.50" (278.6095833233, 57.8018055556)

Data:
  • Constellation: Dra
  • Variability type: EB
  • Maximal brightness (Mag): 7.348 (V)
  • Minimum brightness (Mag): 7.662 (V)
  • Brightness in secondary minimum (Mag): 7.348 (V)
  • Created: 7/27/1997
  • Created by: admin
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Periodic elements:
  • Period (d): 0.944276000000000
  • Epoch (HJD): 48500.18900
  • Secondary Epoch (HJD): 48500.66100
Chart
HL Dra
Source: The STScI Digitized Sky Survey
Number of observations

5 x

Number of observers

4 x

Last observed before

813 days

O-C diagram
Times of minima / maxima - including records from the original O-C gateway  
P: M = 2448500.189 + 0.944276 * E
S: M = 2448500.661 + 0.944276 * E
ID HJDmin Error (+/-) UTCmin Epoch O-C (d) P/S Phot. band Observer Publication Note Instrument
Phase curve
Comments

Timeline