1136 Mercedes
1136 Mercedes, provisional designation 1929 UA, is a background asteroid from the central regions of the asteroid belt, approximately 26 kilometers in diameter. It was discovered on 30 October 1929, by Catalan astronomer Josep Comas i Solà at the Fabra Observatory in Barcelona, Spain. The asteroid was named for the sister-in-law of the discoverer.
| Discovery | |
|---|---|
| Discovered by | J. Comas Solà |
| Discovery site | Fabra Obs. |
| Discovery date | 30 October 1929 |
| Designations | |
MPC designation | (1136) Mercedes |
Named after | Mercedes (discoverer's sister-in-law) |
Alternative designations | 1929 UA · 1966 XB |
Minor planet category | main-belt · (middle) background |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 86.23 yr (31,497 days) |
| Aphelion | 3.2207 AU |
| Perihelion | 1.9111 AU |
Semi-major axis | 2.5659 AU |
| Eccentricity | 0.2552 |
Orbital period (sidereal) | 4.11 yr (1,501 days) |
Mean anomaly | 171.68° |
Mean motion | 0° 14m 23.28s / day |
| Inclination | 8.9825° |
Longitude of ascending node | 209.53° |
| 148.49° | |
| Physical characteristics | |
| Dimensions | 25.23 km (derived) 25.296±0.249 km 26.29±6.21 km 26.349±0.078 km 26.66±0.28 km 33.19±6.54 km |
Synodic rotation period | 6.448±0.002 h 15.6 h (poor) 24.64±0.01 h |
| 0.05±0.04 0.08±0.06 0.084±0.015 0.1007 (derived) 0.1018±0.0230 0.103±0.003 | |
| S (assumed) | |
| 11.00 · 11.10 · 11.2 · 11.22 · 11.68±0.75 | |
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