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12P/Pons-Brooks

Orbital period : 71.00 years

NASA/JPL elements
IAU/MPC elements


On 2023 Sep 24 00h33 UT by Nicolas Biver


(Copyright Nicolas Biver)

Coma Total magnitude (m1)13.8
Aperture radius used for m11.3 '
Nuclear magnitude (m2)15.2
Aperture radius used for m26 "
Coma diameter1.4 '
Coma condensation degree (DC)6
Afrho1050 cm
Afrho error150 cm
r (dist/Sun) 3.178 AU
d (dist/Earth) 3.140 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
Mountdobson sur table equatoriale JMI
MotorizationYes
AutoguideNo
Exposure total time147 s
Exposure details42x2.5s+21x2s
Sky transparency (naked eye max mag)5.5
Seeing2
Moon phase70 °
Moon elongation100 °
Air mass2
LocationBoulonville
Reference stars catalogAPASS
Used softwaresIRIS
Resulting picture sampling (scale)2 "/pix
Image processingbinning, flat, alignement, somme, retrait gradient
Remarks or commentsMagnitude et Afrho (R) sur les 62.5s d'integration en RAW
Observation submission date2023 Sep 26 11h40m56s

(Record n° 27634)

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