12P/Pons-Brooks (Record n° 27786)
Orbital period : 71.00 years
NASA/JPL elements
IAU/MPC elements
On 2023 Nov 01 18h30 UT by Nicolas Biver
(Copyright Nicolas Biver)Coma Total magnitude (m1) 11.1 Aperture radius used for m1 0.3 ' Nuclear magnitude (m2) 11.3 Aperture radius used for m2 6 " Coma diameter 0.5 ' Coma condensation degree
(DC) 9 Afrho 26500 cm Afrho error 3000 cm r (dist/Sun) 2.751 AU d (dist/Earth) 2.882 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 13 °C Mount Dobson Motorization No Autoguide No Exposure total time 15.3 s Exposure details 46x1/3s Sky transparency (naked eye max mag) 3.5 Seeing 3 Moon phase 45 ° Moon elongation 180 ° Air mass 1.27 Location Versailles Reference stars catalog APASS Resulting picture sampling (scale) 2 "/pix Image processing binnig, flat, alignement, somme, retrait gradient Remarks or comments Magnitude sur les 8.3s de pose en RAW, Afrho couche R - nouveau sursaut! Observation submission date 2023 Nov 02 00h44m05s