HAT-P-4 (Transiting exoplanet)

RA: 15h 19m 57.92s, DE: +36° 13' 46.74" (229.9913348405, 36.2296494663)

2/26/2026, 21:48 - 2/27/2026, 04:16 (UTC)

Data:
  • Observer: Nikola Antonov
  • Created: 2/27/2026, 11:44
  • 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: BjdTbd
  • Brightness in: Flux
Note:
Meshtitsa 0.25-m f/4.8 Newtonian (R filter, 60s exp, fap 6-14-28)
2x2 bin; 1.28 arcsecs/pix; T CCD -20C; T Amb. -2C; H 61%; Mer. flip @ 0.643
Determined transits
  • 2461098.53987 (2/27/2026, 00:57)
    Planet designation: HAT-P-4 b
    HJDmid: 2461098.54193 +/- 0.00077
    Heliocentric correction: 0.00206
    Transit depth (Mag): 0.01008 +/- 0.00030
    Transit duration (Min): 249.43 +/- 2.42
    Standard deviation (mmag): 1.99
    Data quality index: 3
    Data density (data/min): 0.83
    Fitting algorithm: Original ETD  
    Note: 
    Meshtitsa 0.25-m f/4.8 Newtonian (R filter, 60s exp, fap 6-14-28)
2x2 bin; 1.28 arcsecs/pix; T CCD -20C; T Amb. -2C; H 61%; Mer. flip @ 0.643
Actions:
Light curve
Neighborhood of the object, comparison and check stars
Chart - HAT-P-4, JD 2461098.40877
Comments