HT Lyr (Eclipsing binary)

RA: 18h 15m 13.50s, DE: +38° 18' 05.13" (273.8062500000, 38.3014250000)

Data:
  • Constellation: Lyr
  • Variability type: EB
  • Maximal brightness (Mag): 13.200 (V)
  • Minimum brightness (Mag): 13.700 (V)
  • Brightness in secondary minimum (Mag): 13.300 (V)
  • Created: 6/1/1996
  • Created by: admin
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Periodic elements:
  • Period (d): 0.861984900000000
  • Epoch (JD): 30103.53000
Change log:

3/22/2025, Filip Walter:

  • Declination: 38.30142 → 38.301425
  • Right ascension: 273.8064 → 273.80625
  • Declination: 38.4 → 38.30142
  • Right ascension: 273.9 → 273.8064
  • Declination: 38.3022222222 → 38.4
  • Right ascension: 273.800375 → 273.9

Chart
HT Lyr
Source: The STScI Digitized Sky Survey
Number of observations

3 x

Number of observers

2 x

Last observed before

4 days

O-C diagram
Times of minima / maxima - including records from the original O-C gateway  
P: M = 2430103.53 + 0.8619849 * E
S: M = 2430103.96099245 + 0.8619849 * E
ID HJDmin UTCmin Epoch O-C (d) P/S Phot. band Observer Publication Note Instrument
Phase curve
Comments

Timeline