| Discovery [1] | |
|---|---|
| Discovered by | F. Börngen |
| Discovery site | Karl Schwarzschild Obs. |
| Discovery date | 8 March 1964 |
| Designations | |
| (4003) Schumann | |
Named after | Robert Schumann (German composer) [2] |
| 1964 ED ·1933 FG1 1967 RK1 ·1968 UL3 1974 SE2 ·1978 GM4 1980 RH2 ·1980 TP6 1981 WV8 | |
| main-belt ·(outer) [1] [3] | |
| Orbital characteristics [1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 84.20 yr (30,753 days) |
| Aphelion | 3.7477 AU |
| Perihelion | 3.1040 AU |
| 3.4258 AU | |
| Eccentricity | 0.0939 |
| 6.34 yr (2,316 days) | |
| 343.35° | |
| 0° 9m 19.44s / day | |
| Inclination | 5.0589° |
| 189.31° | |
| 116.48° | |
| Physical characteristics | |
| Dimensions | 32.03 km (calculated) [3] 35.00±0.89 km [4] 36.115±0.245 [5] 38.207±0.611 km [6] |
| 5.5984±0.0019 h [7] 5.601±0.001 h [8] 5.6040±0.0019 h [7] 5.7502±0.0007 h [9] | |
| 0.0439±0.0089 [6] 0.049±0.008 [5] 0.057 (assumed) [3] 0.072±0.004 [4] | |
| C [3] | |
| 10.80 [4] ·11.1 [6] ·11.154±0.003(R) [7] ·11.186±0.002(R) [7] ·11.2 [1] [3] ·11.40±0.20 [10] | |
4003 Schumann, provisional designation 1964 ED, is a carbonaceous asteroid from the outer region of the asteroid belt, approximately 35 kilometers in diameter.
The asteroid was discovered on 8 March 1964, by German astronomer Freimut Börngen at the Karl Schwarzschild Observatory in Tautenburg, Eastern Germany. [11] It was named after German composer Robert Schumann. [2]
Schumann orbits the Sun in the outer main-belt at a distance of 3.1–3.7 AU once every 6 years and 4 months (2,316 days). Its orbit has an eccentricity of 0.09 and an inclination of 5° with respect to the ecliptic. [1] The first precovery was obtained at Heidelberg Observatory in 1933, extending the asteroid's observation arc by 31 years prior to its discovery. [11]
Schumann has been characterized as a dark C-type asteroid. [3]
According to the space-based surveys carried out by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer with its NEOWISE mission, Schumann's surface has an albedo of 0.04 and 0.07, and an estimated diameter of 35.0 and 38.2 kilometers, respectively. [4] [5] [6] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous bodies of 0.057, and calculates a diameter of 32.0 kilometers. [3]
Several photometric lightcurves of Schumann gave a rotation period between 5.60 and 5.75 hours with a brightness amplitude in the range of 0.20 to 0.23 in magnitude ( U=3-/2+/2 ). [9] [8] [7]
This minor planet was named in honor of German composer of the Romantic era, Robert Schumann (1810–1856), known for his Lieder , chamber works and cello concerti. He was born in Zwickau, in proximity to the discovering observatory in Tautenburg. [2] The official naming citation was published by the Minor Planet Center on 20 May 1989 ( M.P.C. 14634). [12]
