38083 Rhadamanthus

38083 Rhadamanthus

Discovery
Discovered by	Deep Ecliptic Survey
Discovery date	17 April 1999
Designations
MPC designation	38083 Rhadamanthus
Pronunciation	/ˌrædəˈmænθəs/ RAD-ə-MAN-thəs
Named after	Rhadamanthus
Alternative names	1999 HX11
Minor planet category	TNO
Adjectives	Rhadamanth(e/i)an, Rhadamanthine
Orbital characteristics
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 3
Observation arc	3367 days (9.22 yr)
Aphelion	45.204 AU (6.7624 Tm)
Perihelion	33.185 AU (4.9644 Tm)
Semi-major axis	39.194 AU (5.8633 Tm)
Eccentricity	0.15333
Orbital period	245.38 yr (89625.5 d)
Average orbital speed	4.73 km/s
Mean anomaly	97.148°
Inclination	12.720°
Longitude of ascending node	9.9615°
Argument of perihelion	82.178°
Earth MOID	32.2253 AU (4.82084 Tm)
Jupiter MOID	28.1835 AU (4.21619 Tm)
Physical characteristics
Dimensions	87–276 km
Temperature	~ 44 K
Absolute magnitude (H)	7.1

38083 Rhadamanthus is a trans-Neptunian object (TNO). It was discovered in 1999 by the Deep Ecliptic Survey. It was originally thought to be a plutino but no longer is.

Discovery and naming

Rhadamanthus was discovered on 17 April 1999 by the Deep Ecliptic Survey.

Rhadamanthus is named after the Greek mythological figure. The name was announced in the circular of the Minor Planet Center of 24 July 2002, which stated "Rhadamanthus was a son of Zeus and Europa. Because of his just and upright life, after death he was appointed a judge of the dead and the ruler of Elysium, a blissfully beautiful area of the Underworld where those favored by the gods spent their life after death. The name was suggested by E. K. Elliot."

External links

• Orbital simulation from JPL (Java)
• Ephemeris
• 38083 Rhadamanthus at the JPL Small-Body Database

• Discovery · Orbit diagram · Orbital elements · Physical parameters