1029 La Plata
1029 La Plata, provisional designation 1924 RK, is a stony Koronis asteroid from the outer regions of the asteroid belt, approximately 20 kilometers (12 miles) in diameter. It was discovered on 28 April 1924, by German astronomer Johannes Hartmann at the La Plata Astronomical Observatory in Argentina. It was named after the city of La Plata, Argentina, where the discovering observatory is located. The possibly elongated S-type asteroid has a rotation period of 15.31 hours.
Shape model of La Plata from its lightcurve | |
| Discovery | |
|---|---|
| Discovered by | J. F. Hartmann |
| Discovery site | La Plata Obs. |
| Discovery date | 28 April 1924 |
| Designations | |
MPC designation | (1029) La Plata |
Named after | La Plata (city in Argentina and discovering observatory) |
Alternative designations | 1924 RK · 1938 DR2 1969 OU · A916 UL A916 UR |
Minor planet category | main-belt · (outer) Koronis |
| Orbital characteristics | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 100.68 yr (36,772 d) |
| Aphelion | 2.9715 AU |
| Perihelion | 2.8083 AU |
Semi-major axis | 2.8899 AU |
| Eccentricity | 0.0282 |
Orbital period (sidereal) | 4.91 yr (1,794 d) |
Mean anomaly | 87.729° |
Mean motion | 0° 12m 2.16s / day |
| Inclination | 2.4254° |
Longitude of ascending node | 29.903° |
| 142.56° | |
| Physical characteristics | |
Mean diameter | 16.46±1.07 km 19.32±2.72 km 20.71 km (derived) 20.78±1.9 km |
Synodic rotation period | 14 h 14.174±0.003 h 15.310±0.003 h 15.37 h |
| 0.1655 (derived) 0.1819±0.039 0.229±0.246 0.310±0.045 | |
| Tholen = S · S B–V = 0.787 U–B = 0.390 | |
| 10.79 · 10.88 10.99 11.01±0.01 11.37±0.60 | |
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