17P/Holmes (Record n° 15057)
Orbital period : 6.93 years
NASA/JPL elements
IAU/MPC elements
On 2015 Feb 06 04h08 UT by Jean-Francois Coliac
(Copyright Jean-Francois Coliac)Nuclear magnitude (m2) 17.8 Aperture radius used for m2 5 " r (dist/Sun) 3.037 AU d (dist/Earth) 2.550 AU Instrument type Newton Instrument aperture (0=naked eye) 430 mm Instrument focale length 2166 mm Instrument focale/diameter 5.03 Filter(s) None Camera ST 6303 Sensor CCD Sensor pixels number 3072x2048 Sensor temperature -20 °C Binning 1x1 Motorization Yes Autoguide No Exposure total time 600 s Exposure details 10x60s Moon phase 9 ° Moon elongation 95 ° Air mass 1.1 Observatory MPC code H06 Location Mayhill Reference stars catalog UCAC-4 Used softwares ASTROMETRICA Image resize factor 1 Resulting picture sampling (scale) 0.96 "/pix Observation submission date 2016 Jan 15 20h54m11s