2016 Heinemann
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| Discovery[1] | |
|---|---|
| Discovered by | A. Bohrmann |
| Discovery site | Heidelberg Obs. |
| Discovery date | 18 September 1938 |
| Designations | |
| (2016) Heinemann | |
Named after | Karl Heinemann (1898–1970) (German astronomer)[2] |
| 1938 SE · 1927 SM 1930 DF · 1949 SB1 1971 OB1 · 1971 QP2 1972 VY · 1977 RZ7 A905 UF | |
| main-belt · Themis[3] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 111.34 yr (40,667 days) |
| Aphelion | 3.7291 AU |
| Perihelion | 2.5295 AU |
| 3.1293 AU | |
| Eccentricity | 0.1917 |
| 5.54 yr (2,022 days) | |
| 72.570° | |
| 0° 10m 40.8s / day | |
| Inclination | 0.9191° |
| 16.986° | |
| 340.99° | |
| Physical characteristics | |
| Dimensions | 21.68 km (derived)[3] 22.435±0.142 km[4] 22.718±0.080 km[5] 24.18±0.23 km[6] 25.52±1.41 km[7] |
| 22.96±0.01 h[8] | |
| 0.058±0.010[6] 0.0653 (derived)[3] 0.075±0.009[7] 0.0944±0.0179[5] | |
| C[3] | |
| 11.4[5][7] · 11.80[6] · 11.9[1][3] · 12.01±0.33[9] | |
2016 Heinemann, provisional designation 1938 SE, is a carbonaceous Themistian asteroid from the outer regions of the asteroid belt, approximately 22 kilometers in diameter. It was discovered on 18 September 1938, by German astronomer Alfred Bohrmann at Heidelberg Observatory in southwest Germany, and later named after ARI-astronomer Karl Heinemann (1898–1970).[2][10]
Heinemann is a member of the Themis family, a dynamical family of carbonaceous asteroids with nearly coplanar ecliptical orbits, located in the outer-belt main. It orbits the Sun at a distance of 2.5–3.7 AU once every 5 years and 6 months (2,022 days). Its orbit has an eccentricity of 0.19 and an inclination of 1° with respect to the ecliptic.[1]
The body's observation arc begins 33 year prior to its official discovery observation, with its first identification as A905 UF at Heidelberg in October 1905.[10]
