161989 Cacus
| 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.
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