Cometcountdown

18D/Perrine-Mrkos
Discovered by
Charles Dillon Perrine & Antonín Mrkos
Discovery date
9 December, 1896
Semi-major axis
3.5705 AU
Eccentricity
0.6395
Orbital period
6.75
Inclination
17.864°
Epoch
2002-09-03 (JD 2452520.5)
Aphelion
5.8537 AU
Perihelion
1.2872 AU
Last Perihelion(s)
7 Apr, 2009 ? (unobserved)
Next Perihelion
26 Febuary 2017
Last modified
12/12/2016 - 02:55