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13P/Olbers

Orbital period : 68.50 years

NASA/JPL elements
IAU/MPC elements


On 2024 Jul 06 22h07 UT by Nicolas Biver


(Copyright Nicolas Biver)

Coma Total magnitude (m1)6.7
Aperture radius used for m14.5 '
Nuclear magnitude (m2)10.1
Aperture radius used for m26 "
Coma diameter8.5 '
Coma condensation degree (DC)6
Tail length0.55 °
Tail position angle (PA)50 °
Afrho10990 cm
Afrho error360 cm
r (dist/Sun) 1.179 AU
d (dist/Earth) 1.918 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 temperature12 °C
Binning2x2
Mountdobson sur table equatoriale JMI
MotorizationYes
AutoguideNo
Exposure total time131.9 s
Exposure details31x1+26x1.6+17x2.5+21x0.8s
Sky transparency (naked eye max mag)5.5
Seeing3
Moon phase180 °
Moon elongation40 °
Air mass4.13
LocationBoulonville
Reference stars catalogAPASS
Used softwaresIRIS
Resulting picture sampling (scale)2 "/pix
Image processingbinning, flat, alignement, alignement cométaire, somme, retrait gradient
Remarks or commentsformat RAW - Afrho sur couche R
Observation submission date2024 Jul 08 00h23m02s
Observation modification date2024 Jul 12 17h03m47s

(Record n° 28594)

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