Cometcountdown

21P/Giacobini-Zinner
Discovered by
Michel Giacobini, Ernst Zinner
Discovery date
20 December, 1900
Semi-major axis
3.526 AU
Eccentricity
0.7056
Orbital period
6.621
Inclination
31.8108°
Epoch
6 March, 2006
Dimensions
2 km
Aphelion
6.014 AU
Perihelion
1.038 AU
Last Perihelion(s)
11 February, 2012 - 2 July, 2005
Next Perihelion
10 September 2018
Last modified
12/12/2016 - 03:02