67P/Churyumov-Gerasimenko (Record n° 24277)
Orbital period : 6.42 years
NASA/JPL elements
IAU/MPC elements
On 2021 Oct 28 23h06 UT by Nicolas Biver
(Copyright Nicolas Biver)Coma Total magnitude (m1) 9.9 Aperture radius used for m1 2.0 ' Nuclear magnitude (m2) 12.6 Coma diameter 5 ' Coma condensation degree
(DC) 5 Tail length 0.14 ° Tail position angle
(PA) 279 ° r (dist/Sun) 1.212 AU d (dist/Earth) 0.426 AU Right ascension 07 04 44.6 h m s Declination +26 05 01 ° ' " 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 10 °C Binning 2x2 Mount dobson sur table equatoriale JMI Motorization Yes Autoguide No Exposure total time 46 s Exposure details 23*2.0s Sky transparency (naked eye max mag) 6 Seeing 3 Moon phase 140 ° Moon elongation 90 ° Air mass 2 Location Boulonville Reference stars catalog APASS Used softwares IRIS Resulting picture sampling (scale) 4 "/pix Image processing binning, flat, alignement, somme, retrait gradient Remarks or comments couche verte: mV=9.7 dia=4.6' Observation submission date 2021 Nov 01 20h18m01s