 Orbital diagram | |
| Discovery | |
|---|---|
| Discovered by | Pablo Cottenot |
| Discovery date | 2 February 1878 |
| Designations | |
| (181) Eucharis | |
| Pronunciation | /ˈjuːkərɪs/[1] |
Named after | Eucharis |
| A878 CB; 1906 GA | |
| Main belt | |
| Orbital characteristics[2] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 123.63 yr (45157 d) |
| Aphelion | 3.7664 AU (563.45 Gm) |
| Perihelion | 2.49280 AU (372.918 Gm) |
| 3.12958 AU (468.179 Gm) | |
| Eccentricity | 0.20347 |
| 5.54yr (2022.2d) | |
Averageorbital speed | 16.64 km/s |
| 32.3207° | |
| 0° 10m 40.879s / day | |
| Inclination | 18.890° |
| 143.224° | |
| 318.943° | |
| Earth MOID | 1.53686 AU (229.911 Gm) |
| Jupiter MOID | 1.47086 AU (220.038 Gm) |
| TJupiter | 3.099 |
| Physical characteristics | |
| Dimensions | 106.66±2.2 km |
| 52.23 h (2.176 d)[2][3] | |
| 0.1135±0.0054 | |
| S (Tholen) Xk (Bus)[4] | |
| 7.84 | |
181 Eucharis is a large, slowly rotatingmain-beltasteroid that was discovered byFrenchastronomerPablo Cottenot on February 2, 1878, fromMarseille Observatory.[5] It was his only asteroid discovery. This object was named afterEucharis, anymph from the 17th-century novelLes Aventures de Télémaque.
In theTholen classification system, it is categorized as a stonyS-type asteroid, while the Busasteroid taxonomy system lists it as anXk asteroid.[4]Photometric observations of this asteroid at the Goat Mountain Astronomical Research Station inRancho Cucamonga, California during 2007 gave alight curve with a leisurelyrotation period of 52.23 ± 0.05 hours.[3]
This object is the namesake of afamily of 149–778 asteroids that share similar spectral properties andorbital elements; hence they may have arisen from the same collisional event. All members have a relatively highorbital inclination.[6]
_mathilde.jpg) | This article about an S-type asteroid native to theasteroid belt is astub. You can help Wikipedia byadding missing information. |
