1112 Polonia
| Discovery | |
|---|---|
| Discovered by | P. Shajn |
| Discovery site | Simeiz Observatory |
| Discovery date | 15 August 1928 |
| Designations | |
| MPC designation | 1112 Polonia |
|
Named after
|
Poland |
| 1928 PE · 1933 PA A908 XA |
|
| main-belt | |
| Orbital characteristics | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 87.68 yr (32024 days) |
| Aphelion | 3.3407 AU (499.76 Gm) |
| Perihelion | 2.6965 AU (403.39 Gm) |
| 3.0186 AU (451.58 Gm) | |
| Eccentricity | 0.10670 |
| 5.24 yr (1915.6 d) | |
| 213.79° | |
| 0° 11m 16.548s / day | |
| Inclination | 8.9919° |
| 302.87° | |
| 87.500° | |
| Earth MOID | 1.71948 AU (257.231 Gm) |
| Jupiter MOID | 2.12373 AU (317.705 Gm) |
| Jupiter Tisserand parameter | 3.220 |
| Physical characteristics | |
|
Mean radius
|
17.88±0.8 km |
| 82.5 h (3.44 d) | |
| 0.1319±0.012 | |
|
B–V = 0.797 U–B = 0.447 Tholen = S |
|
| 10.05 | |
1112 Polonia, provisional designation 1928 PE, is a main-belt asteroid orbiting the Sun at a distance of 2.7–3.4 AU. It was discovered by Pelageya Shajn on August 15, 1928, and independently discovered by her colleague Grigory Neujmin, both at Simeiz Observatory in Crimea. The 36-kilometer in diameter, S-type asteroid was the first to be discovered by a female astronomer.
The asteroid was given the Latin name of the country of Poland.
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