C/2017 K2 (PANSTARRS) (Record n° 25916)
NASA/JPL elements
IAU/MPC elements
On 2022 Aug 27 20h41 UT by Nicolas Biver
(Copyright Nicolas Biver)Coma Total magnitude (m1) 9.3 Aperture radius used for m1 2.2 ' Nuclear magnitude (m2) 12.5 Aperture radius used for m2 6 " Coma diameter 4 ' Coma condensation degree
(DC) 4 Tail length 0.2 ° Tail position angle
(PA) 28 ° Afrho 5800 cm Afrho error 140 cm r (dist/Sun) 2.301 AU d (dist/Earth) 2.089 AU Right ascension 16 00 00 h m s Declination -21 00 00 ° ' " 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 18 °C Binning 2x2 Mount dobson sur table equatoriale JMI Motorization Yes Autoguide No Exposure total time 141 s Exposure details 24X1.6+17X2.5+30X2s Sky transparency (naked eye max mag) 5.5 Seeing 2 Moon phase 170 ° Moon elongation 180 ° Air mass 7 Location Boulonville Reference stars catalog APASS Used softwares IRIS Resulting picture sampling (scale) 2 "/pix Image processing binning, flat, alignement, somme, retrait gradient Remarks or comments Afrho(couche R image RAW)
Afrho(R+V+B RAW ou JPG) = 5800+-200 cm Observation submission date 2022 Aug 30 17h14m37s