| Discovery[1] | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg Obs. |
| Discovery date | 27 January 1932 |
| Designations | |
| (1815) Beethoven | |
Named after | Ludwig van Beethoven[1] (German composer) |
| 1932 CE1 · 1938 EP 1952 SO · 1954 BD 1958 TJ · 1969 UY1 1971 BN1 | |
| main-belt[1][2] · (outer) background[3][4] | |
| Orbital characteristics[2] | |
| Epoch 27 April 2019 (JD 2458600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 86.62yr (31,638 d) |
| Aphelion | 3.7534AU |
| Perihelion | 2.5495 AU |
| 3.1515 AU | |
| Eccentricity | 0.1910 |
| 5.59 yr (2,043 d) | |
| 206.51° | |
| 0° 10m 34.32s / day | |
| Inclination | 2.7406° |
| 110.81° | |
| 358.50° | |
| Physical characteristics | |
| 23.74±7.79 km[5] 29.82±0.28 km[6] 30.36±2.2 km[7] 30.598±0.168 km[8][9] 32.74±1.30 km[10] 33.899±0.294 km[11] | |
| 54±1 h[12] | |
| 0.0439[11] 0.048[10] 0.0548[7] 0.057[6] 0.09[5] 0.104[8] | |
| Tholen =F[2][13] C0(Barucci)[3] B–V = 0.617[2] U–B = 0.330[2] | |
| 11.33[5] 11.36[1][2][6][7][8][10][11][13] | |
1815 Beethoven, provisional designation1932 CE1, is a carbonaceous backgroundasteroid from the outer regions of theasteroid belt, approximately 30 kilometers (19 miles) in diameter. It was discovered on 27 January 1932, by German astronomerKarl Reinmuth at theHeidelberg Observatory.[1] The uncommonF-type asteroid seems to have a longrotation period of 54 hours (tentative).[13] It was named afterLudwig van Beethoven.[1]
Beethoven is a non-family asteroid from the main belt'sbackground population when applying thehierarchical clustering method to itsproper orbital elements.[3][4] Based on osculating Keplerianorbital elements and in previous analysis byZappalà, the asteroid has also been classified as a member of theThemis family (602), a very largefamily of carbonaceous asteroids, named after24 Themis.[3][13]
It orbits the Sun in theouter main-belt at a distance of 2.5–3.8 AU once every 5 years and 7 months (2,043 days;semi-major axis of 3.15 AU). Its orbit has aneccentricity of 0.19 and aninclination of 3° with respect to theecliptic.[2] The body'sobservation arc begins with its official discovery observation at Heidelberg in January 1992.[1]
Thisminor planet was named after German composerLudwig van Beethoven (1770-1827).[1] The officialnaming citation was published by theMinor Planet Center on 20 February 1976 (M.P.C. 3935).[14]
In theTholen classification,Beethoven is an uncommon, carbonaceousF-type asteroid,[2] while in the Barucci taxonomy, it is aC0 type.[3]
In January 2005, a fragmentary rotationallightcurve ofBeethoven was obtained fromphotometric observations byRobert Stephens at his Santana Observatory (646) in California. Lightcurve analysis gave arotation period of54±1 hours with a brightness amplitude of 0.2magnitude (U=1).[12]
According to the surveys carried out by the Infrared Astronomical SatelliteIRAS, the JapaneseAkari satellite and several publications by theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer,Beethoven measures between 23.7 and 33.9 kilometers in diameter and its surface has analbedo between 0.04 and 0.10.[5][6][7][8][9][10][11]
TheCollaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.0548 and a diameter of 30.36 kilometers based on anabsolute magnitude of 11.36.[13]
