17P/Holmes (Record n° 1316)
Orbital period : 6.93 years
NASA/JPL elements
IAU/MPC elements
On 2007 Oct 29 20h19 UT by Jean-Yves Corsand
(Copyright Jean-Yves Corsand)Coma Total magnitude (m1) 1.7 Coma diameter 6 ' Coma condensation degree
(DC) 8 Tail length 0 ° r (dist/Sun) 2.455 AU d (dist/Earth) 1.627 AU Right ascension 03 47 47.59 h m s Declination +50 26 15.3 ° ' " Instrument type Camera lens Instrument aperture (0=naked eye) 2.8 mm Instrument focale length 7.9 mm Instrument focale/diameter 2.82 Camera Sony Dsc W7 Sensor DC Sensor size 45.7x25.4 mm2 Sensor pixels number 1200x900 Mount fixe Motorization No Exposure total time 5 s Exposure details 1x5s Sky transparency (naked eye max mag) 5.5 Location Raph?le Monet 13280 France Resulting picture sampling (scale) 82.4 "/pix Image processing Zone choisie centr?e / r?duction 85% / taux compression 20 (80%) Remarks or comments Lumi?res indirectes du village Observation submission date 2010 Dec 21 21h29m26s