1186 Turnera
1186 Turnera, provisional designation 1929 PL, is a stony Eoan asteroid from the outer regions of the asteroid belt, approximately 36 kilometers in diameter. It was discovered on 1 August 1929, by South African astronomer Cyril Jackson at the Union Observatory in Johannesburg. The asteroid was later named after British astronomer Herbert Hall Turner.
Shape model of Turnera from its lightcurve | |
| Discovery | |
|---|---|
| Discovered by | C. Jackson |
| Discovery site | Johannesburg Obs. |
| Discovery date | 1 August 1929 |
| Designations | |
MPC designation | (1186) Turnera |
Named after | Herbert Hall Turner (British astronomer) |
Alternative designations | 1929 PL · 1930 UO 1930 WL · 1932 CC A919 SE |
Minor planet category | main-belt · (outer) Eos |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 87.93 yr (32,115 days) |
| Aphelion | 3.3314 AU |
| Perihelion | 2.7190 AU |
Semi-major axis | 3.0252 AU |
| Eccentricity | 0.1012 |
Orbital period (sidereal) | 5.26 yr (1,922 days) |
Mean anomaly | 252.20° |
Mean motion | 0° 11m 14.28s / day |
| Inclination | 10.752° |
Longitude of ascending node | 42.988° |
| 295.00° | |
| Physical characteristics | |
| Dimensions | 34.290±0.275 km 35.56±2.0 km 37.17±7.78 km 39.06±0.57 km 39.19±1.25 km 39.691±0.354 km |
Synodic rotation period | 12.010 h 12.066±0.004 h 12.085±0.001 h 15±2 h |
| 0.12±0.04 0.2350±0.0371 0.240±0.026 0.247±0.008 0.2919±0.036 | |
| S (Tholen) · S Sq (SMASS) B–V = 0.790 U–B = 0.430 | |
| 9.20 9.90±0.38 | |
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