Cometcountdown

121P/Shoemaker-Holt 2
Discovered by
Carolyn S. Shoemaker, Eugene Merle Shoemaker, Henry E. Holt
Discovery date
9 March 1989
Alternative designations
1988 XI; 1995 Q3
Semi-major axis
4.013 AU
Eccentricity
0.3396
Orbital period
8.039 a
Inclination
17.7218°
Epoch
6 March 2006
Aphelion
5.376 AU
Perihelion
2.65 AU
Last Perihelion(s)
8 September 2013 - 1 September 2004
Next Perihelion
28 June 2023
Last modified
17/12/2016 - 07:48