136 Austria
3D convex shape model of 136 Austria | |
| Discovery | |
|---|---|
| Discovered by | Johann Palisa |
| Discovery site | Austrian Naval Obs. |
| Discovery date | 18 March 1874 |
| Designations | |
| (136) Austria | |
Named after | Austria |
| A874 FA; 1950 HT | |
| main-belt · (inner) background | |
| Orbital characteristics | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 141.11 yr (51,539 d) |
| Aphelion | 2.4812 AU |
| Perihelion | 2.0927 AU |
| 2.2869 AU | |
| Eccentricity | 0.0849 |
| 3.46 yr (1,263 d) | |
| 102.82° | |
| 0° 17m 6s / day | |
| Inclination | 9.5788° |
| 186.46° | |
| 2024-Feb-24 | |
| 132.95° | |
| Physical characteristics | |
| 40.14±1.0 km 40.14 km | |
| Mass | 6.8×1016 kg |
| 11.4969 h (0.47904 d) | |
| 0.1459±0.007 0.1459 | |
| M | |
| 9.69 | |
136 Austria is a main-belt asteroid that was found by the prolific asteroid discoverer Johann Palisa on 18 March 1874, from the Austrian Naval Observatory in Pola, Istria. It was his first asteroid discovery and was given the Latin name of his homeland.
Based upon its spectrum, it is classified as an M-type spectrum, although Clark et al. (1994) suggest it may be more like an S-type asteroid. It shows almost no absorption features in the near infrared, which may indicate an iron or enstatite chondrite surface composition. A weak hydration feature was detected in 2006.
Photometric observations of this asteroid at the European Southern Observatory in 1981 gave a light curve with a period of 11.5 ± 0.1 hours and a brightness variation of 0.40 in magnitude. As of 2013, the estimated rotation period is 11.4969 hours.