 Orbital diagram | |
| Discovery[1] | |
|---|---|
| Discovered by | A. Charlois |
| Discovery site | Nice Observatory |
| Discovery date | 28 December 1894 |
| Designations | |
| (398) Admete | |
| Pronunciation | /ædˈmiːtiː/[2] |
Named after | Admete(Greek mythology)[3] |
| 1894 BN · 1951 LP 1952 QC1 · A907 RE | |
| main-belt · (outer)[4] | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 120.95 yr (44176 d) |
| Aphelion | 3.3515 AU (501.38 Gm) |
| Perihelion | 2.1269 AU (318.18 Gm) |
| 2.7392 AU (409.78 Gm) | |
| Eccentricity | 0.22354 |
| 4.53yr (1655.9d) | |
| 314.19° | |
| 0° 13m 2.64s / day | |
| Inclination | 9.5259° |
| 279.98° | |
| 159.02° | |
| Earth MOID | 1.144 AU (171.1 Gm) |
| Jupiter MOID | 1.91915 AU (287.101 Gm) |
| TJupiter | 3.294 |
| Physical characteristics | |
| Dimensions | 46.98±2.3 km(IRAS:6)[1] 46.93 km(derived)[4] |
| 11.208 h (0.4670 d)[1] 11.208±0.001h[5] | |
| 0.0607±0.006(IRAS:6)[1] 0.0555(derived)[4] | |
| SMASS =C[1] C[4] | |
| 10.4[1] | |
398 Admete, provisional designation 1894 BN, is a dark, carbonaceousasteroid from the outer region of theasteroid belt, about 47 kilometers in diameter. It was discovered on 28 December 1894, by French astronomerAuguste Charlois atNice Observatory in southeastern France.[6]
The darkC-type asteroid orbits the Sun at a distance of 2.1–3.4 AU once every 4 years and 6 months (1,656 days). Its orbit shows aneccentricity of 0.22 and istilted by 10 degrees to the plane of theecliptic. The body's surface has a low albedo of 0.06, which is a typical value for carbonaceous asteroids.[1]
It had been titledthe lowest numbered asteroid with no previously known period until its opposition in 2014, when a photometriclight-curve analysis was performed at the Uruguayan Los Algarrobos Observatory (OLASU,I38). It rendered arotation period of11.208±0.001 hours with a brightness amplitude of0.13±0.02 inmagnitude.[5] Still in 2014, Eduardo Alvarez at OLASU went on to determine the period of the next lowest numbered asteroid with no previously known period,457 Alleghenia. Since then all asteroids numbered up to 500 had their rotation period determined. As of 2014, there are still 22 asteroids with no known period up to number 1000.[5]
The minor planet was named from Greek mythology forAdmete, daughter of kingEurystheus, who appointed the Twelve Labors ofHeracles, after whom the minor planet5143 Heracles is named. One of the labors was to obtaining the golden girdle of Hippolyta, because Admete coveted it.[3]
_mathilde.jpg) | This article about an asteroid native to theasteroid belt is astub. You can help Wikipedia byexpanding it. |
