Discovery | |
---|---|
Discovered by | HE Schuster |
Discovery site | European Southern Observatory |
Discovery date | 8 February 1978 |
Designations | |
MPC designation | (1978) CA |
MPO 338323 | |
Orbital characteristics | |
Epoch 13 January 2016 (JD 2457400.5) | |
Uncertainty parameter 0 | |
Observation arc | 13905 days (38.07 yr) |
Aphelion | 1.3633 AU (203.95 Gm) |
Perihelion | 0.88274 AU (132.056 Gm) |
1.1230 AU (168.00 Gm) | |
Eccentricity | 0.21395 |
1.19 yr (434.68 d) | |
208.54° | |
0.82820°/day | |
Inclination | 26.062° |
161.25° | |
102.15° | |
Earth MOID | 0.0138852 AU (2.07720 Gm) |
Jupiter MOID | 3.81078 AU (570.085 Gm) |
Physical characteristics | |
Dimensions | 1.9 km |
Mean radius
|
0.95 km |
3.7538 h (0.15641 d) | |
0.09 | |
S | |
17.2 | |
161989 Cacus (or 1978 CA) is an Apollo asteroid, near Earth asteroid, and a Potentially Hazardous Asteroid (PHA).
It is named after the fire-breathing monster called Cacus, who stole Hercules' cattle.