12P/Pons-Brooks (Record n° 28082)
Orbital period : 71.00 years
NASA/JPL elements
IAU/MPC elements
On 2024 Jan 19 06h04 UT by Nicolas Biver
(Copyright Nicolas Biver)Coma Total magnitude (m1) 8.9 Aperture radius used for m1 2 ' Nuclear magnitude (m2) 11.6 Aperture radius used for m2 6 " Coma diameter 3 ' Coma condensation degree
(DC) 6 r (dist/Sun) 1.765 AU d (dist/Earth) 2.055 AU Instrumental configuration Config1 Instrument Dobson 407mm F/D 4.3 Instrument type Newton Instrument aperture (0=naked eye) 407 mm Instrument focale length 1750 mm Instrument focale/diameter 4.29 Filter(s) None Camera SONY alpha7S Sensor DC Sensor size 36*24 mm2 Sensor pixels number 4240*2832 Sensor temperature -3 °C Binning 2x2 Mount Dobson Motorization No Autoguide No Exposure total time 37.7 s Exposure details 92x1/4+44x1/3s Sky transparency (naked eye max mag) 4 Seeing 3 Moon phase 90 ° Moon elongation 180 ° Air mass 2.46 Location Versailles Reference stars catalog APASS Used softwares IRIS Resulting picture sampling (scale) 2 "/pix Image processing Binning, flat, alignement, alignement comète, somme, retrait gradient Observation submission date 2024 Jan 19 15h29m43s