874 Rotraut
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_Rotraut.png) Modelled shape of Rotraut from its lightcurve | |
| Discovery[1] | |
|---|---|
| Discovered by | M. F. Wolf |
| Discovery site | Heidelberg Obs. |
| Discovery date | 25 May 1917 |
| Designations | |
| (874) Rotraut | |
Named after | Schön Rotraut (poem by Eduard Mörike)[2] |
| A917 KK · 1976 WJ 1917 CC | |
| Orbital characteristics[3] | |
| Epoch 31 May 2020 (JD 2459000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 102.67 yr (37,499 d) |
| Aphelion | 3.4039 AU |
| Perihelion | 2.8992 AU |
| 3.1515 AU | |
| Eccentricity | 0.0801 |
| 5.59 yr (2,044 d) | |
| 171.80° | |
| 0° 10m 34.32s / day | |
| Inclination | 11.141° |
| 190.63° | |
| 9.4547° | |
| Physical characteristics | |
| Dimensions | 51.1 km × 37.7 km[5] |
| 14.297 h[9][10] | |
Pole ecliptic latitude | |
| 10.1[1][3] | |
874 Rotraut (prov. designation: A917 KK or 1917 CC) is a dark and elongated background asteroid, approximately 58 kilometers (36 miles) in diameter, located in the outer region of the asteroid belt. It was discovered on 25 May 1917, by astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory is southwest Germany.[1] The hydrated carbonaceous C-type asteroid (Ch) has a rotation period of 14.3 hours. It was likely named after the ballad Schön Rotraut by German lyric poet Eduard Mörike (1804–1875).[2]
Rotraut is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements.[4][5] It orbits the Sun in the outer asteroid belt at a distance of 2.9–3.4 AU once every 5 years and 7 months (2,044 days; semi-major axis of 3.15 AU). Its orbit has an eccentricity of 0.08 and an inclination of 11° with respect to the ecliptic.[3] The body's observation arc begins at Heidelberg Observatory with its official discovery observation on 25 May 1917.[1]
Naming
"Rotraut" is a feminine German first name. This minor planet was likely named after the ballad Schön Rotraut (Pretty Rohtraut) by the German lyric poet Eduard Mörike (1804–1875). Lutz Schmadel, the author of the Dictionary of Minor Planet Names learned about Wolf's source of inspiration from private communications with Dutch astronomer Ingrid van Houten-Groeneveld, who worked as a young astronomer at Heidelberg.[2]
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