EF Dra (Eclipsing binary)

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

3/17/2012, 22:12 - 3/18/2012, 02:01 (UTC)

Data:
  • Observer: Ladislav Šmelcer
  • Created: 3/18/2012, 23:55
  • Station: Hvězdárna Valašské Meziříčí
  • Instrument: Celestron 355/2460mm + CCD G2 1600
  • Photometric band: V
  • Time standard: Gjd
  • Brightness in: Mag
Note:
předpověď primárního minima JDg=2456004.4784 - 23h28m UT (Mo=48491.568  per.=0.424027 dne) - minimum nastalo o 53 minut později
Determined minima
  • P: 2456004.51370 (3/18/2012, 00:19)
    HJDmin: 2456004.51367 +/- 0.00050  
    Heliocentric correction: -0.00003
  • P: 2456004.51450 (3/18/2012, 00:20)
    HJDmin: 2456004.51447 +/- 0.00050  
    Heliocentric correction: -0.00003
  • P: 2456004.51440 (3/18/2012, 00:20)
    HJDmin: 2456004.51437 +/- 0.00040  
    Heliocentric correction: -0.00003
Actions:
Light curve
Neighborhood of the object, comparison and check stars
Chart - EF Dra, JD 2456004.42516
Comments