888 Parysatis
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| Discovery[1] | |
|---|---|
| Discovered by | M. F. Wolf |
| Discovery site | Heidelberg Obs. |
| Discovery date | 2 February 1918 |
| Designations | |
| (888) Parysatis | |
| Pronunciation | /pəˈrɪsətɪs/[2] |
Named after | Queen Parysatis (Persian Queen)[3] |
| A918 CE · A906 JA A908 YL · A915 JD 1915 JD · 1918 DC 1906 JA · 1908 YL | |
| main-belt[1][4] · (middle) background[5][6] | |
| Orbital characteristics[4] | |
| Epoch 31 May 2020 (JD 2459000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 113.73 yr (41,539 d) |
| Aphelion | 3.2357 AU |
| Perihelion | 2.1828 AU |
| 2.7093 AU | |
| Eccentricity | 0.1943 |
| 4.46 yr (1,629 d) | |
| 14.339° | |
| 0° 13m 15.6s / day | |
| Inclination | 13.850° |
| 123.94° | |
| 298.11° | |
| Physical characteristics | |
| 5.9314±0.0002 h[10] | |
| 9.4[1][4] | |
888 Parysatis (prov. designation: A918 CE or 1918 DC) is a stony background asteroid, approximately 44 kilometers (27 miles) in diameter, that is located in the central region of the asteroid belt. It was discovered by German astronomer Max Wolf at the Heidelberg Observatory on 2 February 1918.[1] The S-type asteroid has a rotation period of 5.9 hours. It was named after the Persian Queen Parysatis from the Achaemenid Empire of the 5th century BC.[3]
Located in or near the region of the Eunomia family,[11] Parysatis is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements.[5][6] It orbits the Sun in the central asteroid belt at a distance of 2.2–3.2 AU once every 4 years and 6 months (1,629 days; semi-major axis of 2.71 AU). Its orbit has an eccentricity of 0.19 and an inclination of 14° with respect to the ecliptic.[4] The body's observation arc begins at Vienna Observatory on 24 May 1906, almost 12 years prior to its official discovery observation at Heidelberg on 2 February 1918.[1]
Naming
This minor planet was named after the Persian Queen Parysatis of the Achaemenid Empire in the 5th century BC. She was the wife of the king Darius II, and the mother of Artaxerxes II of Persia, after whom the asteroid 831 Stateira was named. The naming was also mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 86).[3]
