Global Information1082 Pirola information
 Modelled shape of Pirola from its lightcurve | |
| Discovery[1] | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg Obs. |
| Discovery date | 28 October 1927 |
| Designations | |
MPC designation | (1082) Pirola |
| Pronunciation | /ˈpɪrələ/[2] |
Named after | Pyrola (wintergreen) (herbaceous plant)[3] |
Alternative designations | 1927 UC · 1931 JQ 1951 AH · 1952 DS 1971 YJ · A916 UP |
Minor planet category | main-belt[1][4] · (outer) Themis[5][6][7] |
| Orbital characteristics[4] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 90.01 yr (32,875 days) |
| Aphelion | 3.6858 AU |
| Perihelion | 2.5553 AU |
Semi-major axis | 3.1205 AU |
| Eccentricity | 0.1811 |
Orbital period (sidereal) | 5.51 yr (2,013 days) |
Mean anomaly | 130.74° |
Mean motion | 0° 10m 43.68s / day |
| Inclination | 1.8524° |
Longitude of ascending node | 148.01° |
Argument of perihelion | 187.23° |
| Physical characteristics | |
Mean diameter | 37.363±1.036 km[8] 39.14±13.91 km[9] 41.47±12.07 km[10] 42.607±0.476 km[11] 42.61±0.48 km[11] 44.67±0.71 km[12] |
Synodic rotation period | 15.85±0.01 h[13] 15.851±0.0140 h[14] 15.8525±0.0005 h[15] 15.8540±0.0001 h[16] |
Pole ecliptic latitude |
|
Geometric albedo | 0.052±0.006[17] 0.06±0.05[9][10] 0.061±0.002[12] 0.067±0.008[11] 0.0867±0.0105[8] |
Spectral type |
|
Absolute magnitude (H) | 10.4[1][4][8][9][11][12] · 10.450±0.002 (R)[14] · 10.507±0.014[15] · 10.51[5] · 10.53[10] |
1082 Pirola /ˈpɪrələ/ is a dark Themistian asteroid from the outer regions of the asteroid belt. It was discovered on 28 October 1927, by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in Germany, and assigned the provisional designation 1927 UC.[1] The carbonaceous C-type asteroid has a rotation period of 15.9 hours and measures approximately 41 kilometers (25 miles) in diameter. It was named after the herbaceous plant Pyrola (wintergreen).[3]
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