GQ Dra (Eclipsing binary)

RA: 17h 25m 29.44s, DE: +51° 29' 35.10" (261.3726666567, 51.4930833330)

8/14/2023, 19:23 - 8/14/2023, 22:46 (UTC)

Data:
  • Observer: Urbaník M.
  • Created: 8/17/2023, 19:18
  • Station: Kysucká hvezdáreň
  • Instrument: MEGREZ 88 FD 88/498 + MII G2-8300
  • Photometric band: B
  • Time standard: Gjd
  • Brightness in: Mag
Determined minima
  • P: 2460171.38431 (8/14/2023, 21:13)
    HJDmin: 2460171.38479 +/- 0.00047  
    Heliocentric correction: 0.00048
    Note: 
    CCD+V,exp.25 s., comp. HD157893.

----- EBFit result: -----
Tmin = 2460171.38431
Error (1 sigma): +0.00047/-0.00046 (Bootstrapping), +0.00023/-0.00026 (Prayer bead), +0.00011/-0.00011 (LSM)
Error (95% CI):  +0.00096/-0.00091 (Bootstrapping), +0.00034/-0.00048 (Prayer bead)
LSM: chi^2 = 1068.5, n_freedom = 63
  • P: 2460171.38460 (8/14/2023, 21:13)
    HJDmin: 2460171.38508 +/- 0.00033  
    Heliocentric correction: 0.00048
    Note: 
    CCD+R,exp.16 s., comp. HD157893.

----- EBFit result: -----
Tmin = 2460171.38460
Error (1 sigma): +0.00031/-0.00035 (Bootstrapping), +0.00013/-0.00011 (Prayer bead), +0.00010/-0.00010 (LSM)
Error (95% CI):  +0.00070/-0.00070 (Bootstrapping), +0.00022/-0.00035 (Prayer bead)
LSM: chi^2 = 736.3, n_freedom = 61
  • P: 2460171.38485 (8/14/2023, 21:14)
    HJDmin: 2460171.38533 +/- 0.00057  
    Heliocentric correction: 0.00048
    Note: 
    CCD+I,exp.20 s., comp. HD157893.

----- EBFit result: -----
Tmin = 2460171.38485
Error (1 sigma): +0.00054/-0.00060 (Bootstrapping), +0.00016/-0.00014 (Prayer bead), +0.00025/-0.00025 (LSM)
Error (95% CI):  +0.00116/-0.00113 (Bootstrapping), +0.00030/-0.00039 (Prayer bead)
LSM: chi^2 = 277.1, n_freedom = 63
Actions:
Light curve
Neighborhood of the object, comparison and check stars
Chart - GQ Dra, JD 2460171.30765
Comments