1999 OJ4
Number
-
Provisional name
1999 OJ4
Class
Cubewano
Discovery
18.07.1999, 12:27:54 UT, Mauna Kea, Hawaii, USA
Discovery position
15 Aquarius 21' Rx
Time of announcement
18.11.1999 - 23:05 UT
Orbital period
235.3 years
Orbit
  • crosses the orbit of Pluto
Aphelion
39.142 AU
Perihelion
37.291 AU
Semimajor axis
38.217 AU
Magnitude
7.0
Diameter
75 - 240 km
Inclination
4.0
 
1999 OJ4 has a binary companion.

Satellite
S/2002 (1999 OJ4) 1
Discovery
04.10.2002, Hubble Space Telescope
Time of announcement
05.10.2005
Distance between pair
2200 km