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C/2023 A3 (Tsuchinshan-ATLAS)


NASA/JPL elements
IAU/MPC elements


On 2024 Sep 29 04h53 UT by Nicolas Biver


(Copyright Nicolas Biver)

Coma Total magnitude (m1)2.4
Aperture radius used for m11.3 '
Nuclear magnitude (m2)5.3
Aperture radius used for m25.5 "
Coma diameter1.9 '
Tail length0.1 °
Afrho68000 cm
Afrho error21000 cm
r (dist/Sun) 0.393 AU
d (dist/Earth) 0.853 AU
Instrumental configurationConfig1
InstrumentDobson 256mm F/D=4.95
Instrument typeNewton
Instrument aperture (0=naked eye)256 mm
Instrument focale length1267 mm
Instrument focale/diameter4.94
Filter(s)None
CameraSONY alpha7S
SensorDC
Sensor size36*24 mm2
Sensor pixels number4240*2832
Sensor temperature10 °C
Binning2x2
MountDobson
MotorizationNo
AutoguideNo
Exposure total time10.2 s
Exposure details42x1/4s
Sky transparency (naked eye max mag)3
Seeing2
Moon phase150 °
Moon elongation30 °
Air mass16
LocationVersailles
Used softwaresIRIS
Resulting picture sampling (scale)2.77 "/pix
Image processingbinning, flat, alignement comete, somme, retrait gradient
Remarks or commentsImages RAW, Afrho sur couche R. Une seule étoile de référence (m=7.2), absorption différentielle appliquée
Observation submission date2024 Sep 29 18h43m37s

(Record n° 28900)

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