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C/2021 S3 (PANSTARRS)

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 m11.5 '
Nuclear magnitude (m2)13.9
Aperture radius used for m26 "
Coma diameter2.7 '
Coma condensation degree (DC)5
Tail length0.45 °
Tail position angle (PA)266 °
Afrho580 cm
Afrho error90 cm
r (dist/Sun) 1.791 AU
d (dist/Earth) 1.602 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 temperature9 °C
Binning2x2
Mountdobson sur table equatoriale JMI
MotorizationYes
AutoguideNo
Exposure total time165 s
Exposure details46x2.5+25x2s
Sky transparency (naked eye max mag)6
Seeing3
Moon phase180 °
Moon elongation180 °
Air mass2
LocationTAUXIGNY
Reference stars catalogAPASS
Used softwaresIRIS
Resulting picture sampling (scale)2 "/pix
Image processingflat,alignement,somme,retrait gradient
Remarks or commentsmagnitudes et afrho(R) sur 105s de pose en RAW
Observation submission date2024 May 20 12h12m34s

(Record n° 28462)

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