KELT-21 (Transiting exoplanet)

RA: 20h 19m 12.00s, DE: +32° 34' 51.76" (304.8000204067, 32.5810449993)

8/2/2026, 21:55 - 8/3/2026, 03:00 (UTC)

Data:
  • Observer: Giovanni Calapai
  • Created: 8/3/2026, 10:29
  • Station: Calapai Astronomical Observatory
    Lat: +38°, Long: +16°
  • Instrument: Celestron C14 (SCT 356/3910) Atik 314L+ red. 0,7x
  • Photometric band: IR
  • Time standard: Gjd
  • Brightness in: Mag
Determined transits
  • 2461255.52674 (8/3/2026, 00:38)
    Planet designation: KELT-21 b
    HJDmid: 2461255.53044 +/- 0.00133
    Heliocentric correction: 0.00371
    Transit depth (Mag): 0.01252 +/- 0.00073
    Transit duration (Min): 251.83 +/- 4.15
    Standard deviation (mmag): 2.83
    Data quality: 3 (good)
    Data density (data/min): 0.62
    Fitting algorithm: Original ETD  
    Note: 
    Adopted limb darkening: 0.5 | EXP. 90s | binning 1+1 | defocus | FWHM 5.6 px (3.0 arc-sec/pixel) | weather: clear, moisture| bortle 5, encircling light pollution | Photometric aperture radii: 12-32-38 | Baader IR-Pass filter 685 nm | Moon illumination: 81.2%, distance: 60°
Actions:
Light curve
Star field chart
Chart - KELT-21, JD 2461255.41366
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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