C/2021 S3 (PANSTARRS) (Record n° 28463)
Orbital period : 10376.00 years
NASA/JPL elements
IAU/MPC elements
On 2024 May 07 23h04 UT by Nicolas Biver
(Copyright Nicolas Biver)Coma Total magnitude (m1) 11.5 Aperture radius used for m1 1.5 ' Nuclear magnitude (m2) 13.8 Aperture radius used for m2 6 " Coma diameter 2.6 ' Coma condensation degree
(DC) 5 Tail length 0.35 ° Tail position angle
(PA) 260 ° Afrho 630 cm Afrho error 50 cm r (dist/Sun) 1.781 AU d (dist/Earth) 1.593 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 12 °C Binning 2x2 Mount dobson sur table equatoriale JMI Motorization Yes Autoguide No Exposure total time 60 s Exposure details 10x2+15x1.6s Sky transparency (naked eye max mag) 6 Seeing 3 Moon phase 180 ° Moon elongation 180 ° Air mass 2 Location Tauxigny, France Used softwares IRIS Resulting picture sampling (scale) 2 "/pix Image processing flat, alignement, alignement comète, somme, retrait gradient Remarks or comments magnitude et Afrho (couche R) sur 40s de pose en RAW (sur les 60s) Observation submission date 2024 May 20 19h50m26s