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C/2021 S3 (PANSTARRS)

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 m11.5 '
Nuclear magnitude (m2)13.8
Aperture radius used for m26 "
Coma diameter2.6 '
Coma condensation degree (DC)5
Tail length0.35 °
Tail position angle (PA)260 °
Afrho630 cm
Afrho error50 cm
r (dist/Sun) 1.781 AU
d (dist/Earth) 1.593 AU
Instrumental configurationConfig1
InstrumentDobson 407mm F/D 4.3
Instrument typeNewton
Instrument aperture (0=naked eye)407 mm
Instrument focale length1750 mm
Instrument focale/diameter4.29
Filter(s)None
CameraSONY alpha7S
SensorDC
Sensor size36*24 mm2
Sensor pixels number4240*2832
Sensor temperature12 °C
Binning2x2
Mountdobson sur table equatoriale JMI
MotorizationYes
AutoguideNo
Exposure total time60 s
Exposure details10x2+15x1.6s
Sky transparency (naked eye max mag)6
Seeing3
Moon phase180 °
Moon elongation180 °
Air mass2
LocationTauxigny, France
Used softwaresIRIS
Resulting picture sampling (scale)2 "/pix
Image processingflat, alignement, alignement comète, somme, retrait gradient
Remarks or commentsmagnitude et Afrho (couche R) sur 40s de pose en RAW (sur les 60s)
Observation submission date2024 May 20 19h50m26s

(Record n° 28463)

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