17P/Holmes (Record n° 2655)
Orbital period : 6.93 years
NASA/JPL elements
IAU/MPC elements
On 2007 Nov 30 00h00 UT by Nicolas BiverComa Total magnitude (m1) 3.3 Coma diameter 30 ' Coma condensation degree
(DC) 3 r (dist/Sun) 2.583 AU d (dist/Earth) 1.686 AU ICQ full report 17 2007 11 30.00 S 3.3 HV 0.0E 30 3 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 12h23m37s