C/2021 S3 (PANSTARRS) (Record n° 28462)
Orbital period : 10376.00 years
NASA/JPL elements
IAU/MPC elements
On 2024 May 08 23h29 UT by Nicolas Biver
(Copyright Nicolas Biver)Coma Total magnitude (m1) 11.4 Aperture radius used for m1 1.5 ' Nuclear magnitude (m2) 13.9 Aperture radius used for m2 6 " Coma diameter 2.7 ' Coma condensation degree
(DC) 5 Tail length 0.45 ° Tail position angle
(PA) 266 ° Afrho 580 cm Afrho error 90 cm r (dist/Sun) 1.791 AU d (dist/Earth) 1.602 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 9 °C Binning 2x2 Mount dobson sur table equatoriale JMI Motorization Yes Autoguide No Exposure total time 165 s Exposure details 46x2.5+25x2s Sky transparency (naked eye max mag) 6 Seeing 3 Moon phase 180 ° Moon elongation 180 ° Air mass 2 Location TAUXIGNY Reference stars catalog APASS Used softwares IRIS Resulting picture sampling (scale) 2 "/pix Image processing flat,alignement,somme,retrait gradient Remarks or comments magnitudes et afrho(R) sur 105s de pose en RAW Observation submission date 2024 May 20 12h12m34s