Cometcountdown

111P/Helin–Roman–Crockett
Discovered by
Eleanor F. Helin Ron Helin Brian P. Roman Randy L. Crockett Palomar Observatory (675)
Discovery date
5 January 1989
Alternative designations
1988 XIII
Semi-major axis
4.041 AU
Eccentricity
0.1402
Orbital period
8.122 a
Inclination
4.2326°
Epoch
6 March 2006
Aphelion
4.607 AU
Perihelion
3.474 AU
Last Perihelion(s)
30 January 2013 - 27 December 2004
Next Perihelion
15 June 2021
Last modified
16/12/2016 - 13:29