Cometcountdown

100P/Hartley 1
Discovered by
Malcolm Hartley
Discovery date
13 June 1985
Alternative designations
1991 VII; 1985 VII
Semi-major axis
3.416 AU
Eccentricity
0.4172
Orbital period
6.31 a
Inclination
25.661°
Epoch
5 December 2011
Aphelion
4.841 AU
Perihelion
1.990 AU
Last Perihelion(s)
5 December 2009 - 12 April 2016
Last modified
16/12/2016 - 08:14