17P/Holmes (Record n° 1538)
Orbital period : 6.93 years
NASA/JPL elements
IAU/MPC elements
On 2007 Nov 04 19h40 UT by Jean-Yves Corsand
(Copyright Jean-Yves Corsand)Coma Total magnitude (m1) 3.5 Coma diameter 16 ' Coma condensation degree
(DC) 6 Tail length 0 ° r (dist/Sun) 2.478 AU d (dist/Earth) 1.621 AU Right ascension 03 41 16.18 h m s Declination +50 37 19.5 ° ' " Instrument type Camera lens Instrument aperture (0=naked eye) 2.8 mm Instrument focale length 23.7 mm Instrument focale/diameter 8.46 Camera Sony Dsc W7 Sensor DC Sensor size 45.7x25.4 mm2 Sensor pixels number 1200x900 Mount fixe Motorization No Exposure total time 15 s Exposure details 1x15s Sky transparency (naked eye max mag) 5.5 Location Raph?le Monet 13280 France Resulting picture sampling (scale) 43 "/pix Image processing Num?rique: Zone choisie centr?e / taux compression 20 (80%) Remarks or comments Lumi?res indirectes du village Observation submission date 2011 Jan 03 19h15m12s