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C/2023 H2 (Lemmon)


NASA/JPL elements
IAU/MPC elements


On 2023 Nov 03 20h01 UT by Nicolas Biver


(Copyright Nicolas Biver)

Coma Total magnitude (m1)8.2
Aperture radius used for m16.0 '
Nuclear magnitude (m2)12.5
Aperture radius used for m210 "
Coma diameter9.5 '
Coma condensation degree (DC)2
Tail length0.2 °
Tail position angle (PA)20 °
Afrho102 cm
Afrho error18 cm
r (dist/Sun) 0.899 AU
d (dist/Earth) 0.348 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 temperature8 °C
Binning2x2
Mountdobson sur table equatoriale JMI
MotorizationYes
AutoguideNo
Exposure total time46 s
Exposure details38x1s+16x1/2s
Sky transparency (naked eye max mag)5.5
Seeing1
Moon phase80 °
Moon elongation90 °
Air mass2
LocationBoulonville
Reference stars catalogAPASS
Used softwaresIRIS
Resulting picture sampling (scale)2 "/pix
Image processingbinnig, flat, alignement, somme, retrait gradient
Remarks or commentsPSF~16" (vent+turbulence) Magnitudes et Afrho sur 19s en RAW Afrho couche R
Observation submission date2023 Nov 05 00h56m26s

(Record n° 27799)

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