 Orbit diagram ofXanthus as of March 2013 | |
| Discovery | |
|---|---|
| Discovered by | Henry Holt andNorman G. Thomas |
| Discovery site | Palomar Observatory |
| Discovery date | 31 March 1989 |
| Designations | |
| (4544) Xanthus | |
| Pronunciation | /ˈzænθəs/[1] |
| 1989 FB | |
| Near-Earth objectApollo | |
| Orbital characteristics[2] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 7629 days (20.89 yr) |
| Aphelion | 1.3023 AU (194.82 Gm) |
| Perihelion | 0.78120 AU (116.866 Gm) |
| 1.0418 AU (155.85 Gm) | |
| Eccentricity | 0.25012 |
| 1.06yr (388.38d) | |
| 269.26925° | |
| 0° 55m 36.923s / day | |
| Inclination | 14.146° |
| 24.00998° | |
| 333.75° | |
| Earth MOID | 0.173705 AU (25.9859 Gm) |
| Physical characteristics | |
| Dimensions | 1.3 km |
| 0.65km | |
| 37.65 h (1.569 d) | |
| 17.1 | |
4544 Xanthus/ˈzænθəs/, provisional designation1989 FB, is anasteroid, classified asnear-Earth object of theApollo group, approximately 1.3 kilometers in diameter. It was discovered on 31 March 1989, by astronomersHenry Holt andNorman Thomas at thePalomar Observatory in California.[2]
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