13P/Olbers (Record n° 28594)
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 m1 4.5 ' Nuclear magnitude (m2) 10.1 Aperture radius used for m2 6 " Coma diameter 8.5 ' Coma condensation degree
(DC) 6 Tail length 0.55 ° Tail position angle
(PA) 50 ° Afrho 10990 cm Afrho error 360 cm r (dist/Sun) 1.179 AU d (dist/Earth) 1.918 AU Instrumental configuration Config1 Instrument Dobson 407mm F/D 4.3 Instrument type Newton Instrument aperture (0=naked eye) 407 mm Instrument focale length 1750 mm Instrument focale/diameter 4.29 Filter(s) None Camera SONY alpha7S Sensor DC Sensor size 36*24 mm2 Sensor pixels number 4240*2832 Sensor temperature 12 °C Binning 2x2 Mount dobson sur table equatoriale JMI Motorization Yes Autoguide No Exposure total time 131.9 s Exposure details 31x1+26x1.6+17x2.5+21x0.8s Sky transparency (naked eye max mag) 5.5 Seeing 3 Moon phase 180 ° Moon elongation 40 ° Air mass 4.13 Location Boulonville Reference stars catalog APASS Used softwares IRIS Resulting picture sampling (scale) 2 "/pix Image processing binning, flat, alignement, alignement cométaire, somme, retrait gradient Remarks or comments format RAW - Afrho sur couche R Observation submission date 2024 Jul 08 00h23m02s Observation modification date 2024 Jul 12 17h03m47s