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12P/Pons-Brooks

Orbital period : 71.00 years

NASA/JPL elements
IAU/MPC elements


On 2023 Sep 14 22h43 UT by Nicolas Biver


(Copyright Nicolas Biver)

Coma Total magnitude (m1)14.2
Aperture radius used for m11 '
Nuclear magnitude (m2)16.1
Aperture radius used for m26 "
Coma diameter1.5 '
Coma condensation degree (DC)3
Afrho500 cm
Afrho error40 cm
r (dist/Sun) 3.289 AU
d (dist/Earth) 3.200 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 temperature13 °C
Binning2x2
Mountdobson sur table equatoriale JMI
MotorizationYes
AutoguideNo
Exposure total time183.2 s
Exposure details20x2.5s+16x3.2s+41x2s
Sky transparency (naked eye max mag)5.5
Seeing3
Moon phase180 °
Moon elongation100 °
Air mass1.5
LocationBoulonville
Reference stars catalogAPASS
Used softwaresIRIS
Resulting picture sampling (scale)2 "/pix
Image processingbinning, flat, alignement, somme, retrait gradient
Remarks or commentsAfrho et magnitude sur les 41x2s d'exposition en RAW
Observation submission date2023 Sep 26 14h26m42s

(Record n° 27637)

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