103P/Hartley (Record n° 998)
Orbital period : 6.48 years
NASA/JPL elements
IAU/MPC elements
On 1998 Jan 21 06h14 UT by Nicolas BiverComa Total magnitude (m1) 8.5 Coma diameter 4 ' Coma condensation degree
(DC) 5 r (dist/Sun) 1.114 AU d (dist/Earth) 0.837 AU ICQ full report 103 1998 01 21.26 S 8.5 TJ 5.0B 7 4 5 ICQ XX BIV
Instrument type Binoculars Instrument aperture (0=naked eye) 50 mm Sensor Eye Power magnification 7 X Magnitude visual estimation method
(ICQ code) S Reference stars catalog TYCHO Observation submission date 2010 Sep 30 11h29m55s