103P/Hartley (Record n° 997)
Orbital period : 6.48 years
NASA/JPL elements
IAU/MPC elements
On 1998 Jan 20 09h07 UT by Nicolas BiverComa Total magnitude (m1) 8.7 Coma diameter 4 ' Coma condensation degree
(DC) 6 r (dist/Sun) 1.109 AU d (dist/Earth) 0.834 AU ICQ full report 103 1998 01 20.38 B 8.7 TJ 25.6L 5 42 4 6 ICQ XX BIV
Instrument type Newton Instrument aperture (0=naked eye) 256 mm Instrument focale length 1280 mm Instrument focale/diameter 5 Sensor Eye Power magnification 42 X Magnitude visual estimation method
(ICQ code) B Reference stars catalog TYCHO Observation submission date 2010 Sep 30 11h29m55s