103P/Hartley (Record n° 1065)
Orbital period : 6.48 years
NASA/JPL elements
IAU/MPC elements
On 2010 Oct 10 22h50 UT by Nicolas BiverComa Total magnitude (m1) 7.0 Nuclear magnitude (m2) 12.4 Aperture radius used for m2 1 " Coma diameter 20 ' Coma condensation degree
(DC) 2 Tail length 0.2 ° Tail position angle
(PA) 230 ° r (dist/Sun) 1.089 AU d (dist/Earth) 0.142 AU Instrument type Newton Instrument aperture (0=naked eye) 256 mm Sensor Eye Power magnification 42 X Power magnification for m2 333 X Magnitude visual estimation method
(ICQ code) S Sky transparency (naked eye max mag) 6 Seeing 3 Moon phase 40 ° Moon elongation 180 ° Air mass 1 Location Ablis (78) Reference stars catalog HIPPARC Observation submission date 2010 Oct 12 14h11m38s