17P/Holmes (Record n° 2668)
Orbital period : 6.93 years
NASA/JPL elements
IAU/MPC elements
On 2007 Dec 31 00h43 UT by Nicolas BiverComa Total magnitude (m1) 3.5 Coma diameter 72 ' Coma condensation degree
(DC) 2 r (dist/Sun) 2.713 AU d (dist/Earth) 1.967 AU ICQ full report 17 2007 12 31.03 S 3.5 HV 0.0E 72 2 ICQ XX BIV
Instrument type Naked eye Instrument aperture (0=naked eye) 0 mm Sensor Eye Magnitude visual estimation method
(ICQ code) S Reference stars catalog HIPPARC Observation submission date 2011 Apr 24 12h23m38s