HAT-P-42 (Transiting exoplanet)

RA: 09h 01m 22.00s, DE: +06° 05' 50.00" (135.3416666567, 6.0972222219)

1/17/2026, 21:55 - 1/18/2026, 01:14 (UTC)

Data:
  • Observer: Nikola Antonov
  • Created: 2/12/2026, 09:17 UTC
  • Station: Meshtitsa, Pernik, Bulgaria
    Lat: +42°, Long: +23°
  • Instrument: 250 mm F/4.8 Newtonian, CMOS ASI533MM Pro, Bessel BVR Filters
  • Photometric band: R
  • Time standard: BJD_TDB
  • Brightness in: Flux
Note:
Meshtitsa 0.25-m f/4.8 Newtonian (R filter, 40s exp, fap 9-15-23)
bin 2x2; 1.28 arcsecs/pix; T CCD -20C; T Amb. -5C; H 85%; Mer. flip @ 0.4944
Determined transits
  • 2461058.563801 (1/18/2026, 01:31 UTC)
    Planet designation: HAT-P-42 b
    HJDmid: 2461058.569105 +/- 0.081112
    Heliocentric correction: 0.005304
    Transit depth (Mag): 0.009489 +/- 0.004175
    Transit duration (Min): 297.70 +/- 263.66
    Standard deviation (mmag): 4.67
    Data quality: 4 (fair)
    Data density (data/min): 0.56
    Fitting algorithm: Original ETD  
    Note: 
    Meshtitsa 0.25-m f/4.8 Newtonian (R filter, 40s exp, fap 9-15-23)
bin 2x2; 1.28 arcsecs/pix; T CCD -20C; T Amb. -5C; H 85%; Mer. flip @ 0.4944
  • 2461058.546056 (1/18/2026, 01:06 UTC)
    Planet designation: HAT-P-42 b
    HJDmid: 2461058.551359 +/- 0.004074
    Heliocentric correction: 0.005303
    Transit depth (Mag): 0.009260 +/- 0.003212
    Transit duration (Min): 241.92 +/- 0.00
    Standard deviation (mmag): 4.67
    Data quality: 4 (fair)
    Data density (data/min): 0.56
    Fitting algorithm: Original ETD  
    Note: 
    Meshtitsa 0.25-m f/4.8 Newtonian (R filter, 40s exp, fap 9-15-23)
bin 2x2; 1.28 arcsecs/pix; T CCD -20C; T Amb. -5C; H 85%; Mer. flip @ 0.4944
Actions:
Light curve
Field identification - Star field chart
Chart - HAT-P-42, JD 2461058.41369
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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