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Concept
(1061) Paeonia
Résumé
1061 Paeonia, provisional designation , is a carbonaceous background asteroid from the outer regions of the asteroid belt, approximately in diameter. It was discovered on 10 October 1925, by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in Heidelberg, Germany. The C-type asteroid has a rotation period of 8 hours and is likely very elongated. It was named after the flowering plant Paeonia, commonly known as peony.
Paeonia is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements. Based on osculating Keplerian orbital elements, the asteroid has also been classified as a member of the Themis family (), a very large family of carbonaceous asteroids, named after 24 Themis.
It orbits the Sun in the outer asteroid belt at a distance of 2.5–3.8 AU once every 5 years and 6 months (2,017 days; semi-major axis of 3.12 AU). Its orbit has an eccentricity of 0.22 and an inclination of 2° with respect to the ecliptic. The asteroid was first observed at the Simeiz Observatory in September 1925. The body's observation arc begins at Yerkes Observatory in November 1925, or one month after its official discovery observation at Heidelberg.
This minor planet was named after the genus of flowering plants, Paeonia, which comprises all perennial peony plants. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 ().
Due to his many discoveries, Karl Reinmuth submitted a large list of 66 newly named asteroids in the early 1930s. The list covered his discoveries with numbers between and . This list also contained a sequence of 28 asteroids, starting with 1054 Forsytia, that were all named after plants, in particular flowering plants (also see list of minor planets named after animals and plants).
In the Tholen classification, Paeonia is a common, carbonaceous C-type asteroid, which agrees with the overall spectral type for the Themistians.
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