1815 Beethoven

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1815 Beethoven
Discovery [1]
Discovered by K. Reinmuth
Discovery site Heidelberg Obs.
Discovery date27 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 86.62 yr (31,638 d)
Aphelion 3.7534 AU
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 designation 1932 CE1, is a carbonaceous background asteroid from the outer regions of the asteroid belt, approximately 30 kilometers (19 miles) in diameter. It was discovered on 27 January 1932, by German astronomer Karl Reinmuth at the Heidelberg Observatory. [1] The uncommon F-type asteroid seems to have a long rotation period of 54 hours (tentative). [13] It was named after Ludwig van Beethoven. [1]

    Contents

    Orbit and classification

    Beethoven is a non-family asteroid from the main belt's background population when applying the hierarchical clustering method to its proper orbital elements. [3] [4] Based on osculating Keplerian orbital elements and in previous analysis by Zappalà, the asteroid has also been classified as a member of the Themis family ( 602 ), a very large family of carbonaceous asteroids, named after 24 Themis. [3] [13]

    It orbits the Sun in the outer 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 an eccentricity of 0.19 and an inclination of 3° with respect to the ecliptic. [2] The body's observation arc begins with its official discovery observation at Heidelberg in January 1992. [1]

    Naming

    This minor planet was named after German composer Ludwig van Beethoven (1770-1827). [1] The official naming citation was published by the Minor Planet Center on 20 February 1976 ( M.P.C. 3935). [14]

    Physical characteristics

    In the Tholen classification, Beethoven is an uncommon, carbonaceous F-type asteroid, [2] while in the Barucci taxonomy, it is a C0 type. [3]

    Rotation period

    In January 2005, a fragmentary rotational lightcurve of Beethoven was obtained from photometric observations by Robert Stephens at his Santana Observatory ( 646 ) in California. Lightcurve analysis gave a rotation period of 54±1 hours with a brightness amplitude of 0.2 magnitude ( U=1 ). [12]

    Diameter and albedo

    According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and several publications by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Beethoven measures between 23.7 and 33.9 kilometers in diameter and its surface has an albedo between 0.04 and 0.10. [5] [6] [7] [8] [9] [10] [11]

    The Collaborative 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 an absolute magnitude of 11.36. [13]

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    References

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