EF Dra (Eclipsing binary)

RA: 18h 05m 30.40s, DE: +69° 45' 16.00" (271.3766666617, 69.7544444444)

4/7/2026, 18:46 - 4/8/2026, 02:58 (UTC)

Data:
  • Observer: Martin Kobliha
  • Created: 4/8/2026, 04:34 UTC
  • Station: Prostějov
    Lat: +49°, Long: +17°
  • Instrument: APO TS 125/780; C2-9000; Sloan g, r, i
  • Photometric band: Sg
  • Time standard: HJD
  • Brightness in: Mag
  • Magnitude type: Relative (V−C)
Determined minima
  • P: 2461138.313891 (4/7/2026, 19:32 UTC)
    HJDmin: 2461138.313748 +/- 0.000371  
    Heliocentric correction: -0.000143
  • S: 2461138.522583 (4/8/2026, 00:32 UTC)
    HJDmin: 2461138.522439 +/- 0.000352  
    Heliocentric correction: -0.000144
Actions:
Light curve
Field identification - Star field chart
Chart - EF Dra, JD 2461138.28240
Field identification - Explicitly named stars

No comparison or check stars are explicitly listed for this observation. They should be marked in the star field chart.

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