12P/Pons-Brooks (Record n° 28409)
Orbital period : 71.00 years
NASA/JPL elements
IAU/MPC elements
On 2024 Apr 10 02h26 UT by Nicolas Biver
(Copyright Nicolas Biver)Coma Total magnitude (m1) 4.8 Aperture radius used for m1 3 ' Coma diameter 5 ' Coma condensation degree
(DC) 6 Tail length 5 ° Tail position angle
(PA) 60 ° r (dist/Sun) 0.809 AU d (dist/Earth) 1.609 AU Instrumental configuration Config2 Instrument 135mm F/D 2.5 Instrument type Camera lens Instrument aperture (0=naked eye) 54 mm Instrument focale length 135 mm Instrument focale/diameter 2.5 Filter(s) None Camera SONY alpha7S Sensor DC Sensor size 36*24 mm2 Sensor pixels number 4240*2832 Sensor temperature 20 °C Binning 2x2 Mount OMEGON Minitrack Motorization Yes Autoguide No Exposure total time 104 s Exposure details 11x4+10x5+10s Sky transparency (naked eye max mag) 5.5 Seeing 3 Moon phase 165 ° Moon elongation 8 ° Air mass 5 Location El Walamo, Mexique, sud de Mazatlan Reference stars catalog APASS Used softwares IRIS Resulting picture sampling (scale) 13 "/pix Image processing flat, alignement, alignement comète, somme, retrait gradient Observation submission date 2024 Apr 20 23h15m58s