| Discovery | |
|---|---|
| Discovered by | E. F. Helin andS. J. Bus |
| Discovery site | Palomar |
| Discovery date | 17 April 1977 |
| Designations | |
| (2135) Aristaeus | |
| Pronunciation | /ærɪˈstiːəs/ |
Named after | Aristaeus |
| 1977 HA | |
| PHA[1] | |
| Orbital characteristics[1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 1 | |
| Observation arc | 37.19 yr (13585 days) |
| Aphelion | 2.40409 AU (359.647 Gm) |
| Perihelion | 0.79485 AU (118.908 Gm) |
| 1.5995 AU (239.28 Gm) | |
| Eccentricity | 0.50305 |
| 2.02yr (738.86d) | |
| 83.4440° | |
| 0° 29m 14.046s / day | |
| Inclination | 23.06145° |
| 191.221° | |
| 290.8743° | |
| Earth MOID | 0.00972802 AU (1,455,291 km) |
| Physical characteristics | |
| 17.94[1] | |
2135 Aristaeus (1977 HA) is anApollo asteroid discovered on 17 April 1977, byE. F. Helin andS. J. Bus atPalomar Observatory. It is named forAristaeus, the son of Apollo and the nymph Cyrene.[2]
2135 Aristaeus is apotentially hazardous asteroid (PHA) because itsminimum orbit intersection distance (MOID) is less than 0.05 AU and its diameter is greater than 150 meters. The Earth-MOID is 0.0100 AU (1,500,000 km; 930,000 mi).[1] Its orbit is well-determined for the next several hundred years.
The asteroid made its closest approach to Earth on 1 April 1977, at a nominal distance of 0.03216 AU (4,811,000 km; 2,989,000 mi).[1] It will make its next closest approach on 2 April 2064, at a nominal distance of 0.0546 AU (8,170,000 km; 5,080,000 mi).[1]
