67P/Churyumov-Gerasimenko (Record n° 23903)
Perihelion distance : 1.21 AU
Inclination to ecliptic : 4 °
Orbital period : 6.43 years
Eccentricity : 0.65
NASA/JPL elements
IAU/MPC elements
On 2021 Sep 02 00h09 UT by Nicolas Biver
(Copyright Nicolas Biver)Coma Total magnitude (m1) 12.3 Aperture radius for m1 1 ' Magnitude (MPC m2) 13.7 Aperture radius for m2 6 " Coma diameter 1.3 ' Coma condensation degree
(DC) 6 Tail length 0.1 ° Tail position angle
(PA) 256 ° r (dist/Sun) 1.425 AU d (dist/Earth) 0.702 AU Right ascension 46.57083 ° Declination +13.42778 ° 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 Filter None Camera SONY alpha7S Sensor DC Sensor size 36*24 mm2 Sensor pixels number 4240*2832 Sensor temperature 13 °C Binning 2x2 Mount dobson sur table equatoriale JMI Motorization Yes Autoguide No Exposure total time 162 s Picture exposure details 7*2.5s+34*2s+24*3.2s Sky transparency (naked eye max mag) 5.5 Seeing 3 Moon phase 135 ° Moon elongation 50 ° Air mass 2 Location Boulonville Reference stars catalog (ast) APASS Used softwares IRIS Resulting picture sampling (scale) 2 "/pix Image processing binning, flat, alignement, alignement comète, somme, retrait gradient Observation submission date 2021 Sep 04 23h52m30s