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Discovery
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| Discovered by | Deep Ecliptic Survey |
| Discovery date | April 17, 1999 |
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Designations
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| MPC designation | 38083 Rhadamanthus |
| Pronunciation | /ˌrædəˈmænθəs/ rad-ə-man-thəs, from Greek: Ραδάμανθος |
| Named after | Rhadamanthus |
| Alternate name(s) | 1999 HX11 |
| Minor planet category |
TNO (plutino?)[1][2] |
| Adjective | Rhadamanth(e/i)an, Rhadamanthine |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion | 6747.594 Gm (45.105 AU) |
| Perihelion | 4967.394 Gm (33.205 AU) |
| Semi-major axis | 5857.494 Gm (39.155 AU) |
| Eccentricity | 0.152 |
| Orbital period | 89490.745 d (245.01 a) |
| Average orbital speed | 4.73 km/s |
| Mean anomaly | 84.451° |
| Inclination | 12.731° |
| Longitude of ascending node | 10.001° |
| Argument of perihelion | 81.785° |
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Physical characteristics
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| Dimensions | 87-276 km[4]H |
| Mass | 0.69-22×1018? kg |
| Mean density | 2.0? g/cm³ |
| Equatorial surface gravity | 0.02-0.08? m/s² |
| Escape velocity | 0.05-0.15? km/s |
| Sidereal rotation period |
? d |
| Albedo | 0.10? |
| Temperature | ~44 K |
| Spectral type | ? |
| Absolute magnitude (H) | 6.7[3] |
38083 Rhadamanthus is a trans-Neptunian object (TNO). It was discovered in 1999 by the Deep Ecliptic Survey. It was originally classified as a plutino but no longer is.[1][2]
It is named after the Greek mythological figure Rhadamanthus.
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