9423 Abt
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| Discovery[1] | |
|---|---|
| Discovered by | Spacewatch |
| Discovery site | Kitt Peak Obs. |
| Discovery date | 12 January 1996 |
| Designations | |
| (9423) Abt | |
Named after | Helmut Abt (American astrophysicist)[2] |
| 1996 AT7 · 1974 DU 1981 US15 · 1983 CK8 1990 VH15 · 1992 DP2 | |
| main-belt · (middle)[3] background | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 42.95 yr (15,686 days) |
| Aphelion | 2.9681 AU |
| Perihelion | 2.4182 AU |
| 2.6932 AU | |
| Eccentricity | 0.1021 |
| 4.42 yr (1,614 days) | |
| 114.30° | |
| 0° 13m 22.8s / day | |
| Inclination | 8.8476° |
| 106.16° | |
| 219.27° | |
| Physical characteristics | |
| Dimensions | 12.690±0.145 km[4][5] 12.84±0.86 km[6] 13.29 km (calculated)[3] |
| 3.2766±0.0003 h[7] 3.281±0.005 h[8] | |
| 0.10 (assumed)[3] 0.132±0.012[4][5] 0.141±0.020[6] | |
| S[3] | |
| 12.5[1][3] · 12.20[6] · 12.3[4] · 12.516±0.003 (R)[7] · 12.15±0.31[9] | |
9423 Abt, provisional designation 1996 AT7, is a stony background asteroid from the central region of the asteroid belt, approximately 13 kilometers in diameter. It was discovered on 12 January 1996, by the Spacewatch project of the University of Arizona at Kitt Peak National Observatory, United States.[10] The asteroid was named after American astronomer Helmut Abt.
Abt is a non-family asteroid from the main belt's background population. It orbits the Sun in the central main-belt at a distance of 2.4–3.0 AU once every 4 years and 5 months (1,614 days). Its orbit has an eccentricity of 0.10 and an inclination of 9° with respect to the ecliptic.[1] It was first identified as 1974 DU at Crimea-Nauchnij in February 1974, extending the body's observation arc by 22 years prior to its official discovery observation at Kitt Peak.[10]
Naming
This minor planet was named after American astrophysicist Helmut Abt (born 1925), one of the founders of the discovering Kitt Peak National Observatory, after which the minor planet 2322 Kitt Peak is named. His research included stellar properties and systems. As senior editor of The Astrophysical Journal he was responsible for converting it into its digital format.[2] The official naming citation was published by the Minor Planet Center on 11 November 2000 (M.P.C. 41568).[11]
