Summary
38083 Rhadamanthus /rædəˈmænθəs/ is a trans-Neptunian object (TNO). It was discovered in 1999 by the Deep Ecliptic Survey. It was originally mistakenly thought to be a plutino.[2][3]
| Discovery | |
|---|---|
| Discovered by | Deep Ecliptic Survey |
| Discovery date | 17 April 1999 |
| Designations | |
| (38083) Rhadamanthus | |
| Pronunciation | /rædəˈmænθəs/[1] |
Named after | Rhadamanthus |
| 1999 HX11 | |
| TNO[2][3] | |
| Adjectives | Rhadamanthean, Rhadamanthian /rædəˈmænθiən/[1] |
| Symbol |  (astrological) |
| Orbital characteristics[2][4] | |
| Epoch 20 November 2017 (JD 2458078) | |
| Uncertainty parameter 3 | |
| Observation arc | 5110 days (13.99 yr) |
| Aphelion | 45.139 AU (6.7527 Tm) |
| Perihelion | 32.782 AU (4.9041 Tm) |
| 38.777 AU (5.8010 Tm) | |
| Eccentricity | 0.1546 |
| 241.47 yr (88197.3 d) | |
Average orbital speed | 4.73 km/s |
| 97.148° | |
| 0° 0m 14.46s / day | |
| Inclination | 12.793° |
| 9.9615° | |
| 82.178° | |
| Earth MOID | 32.2253 AU (4.82084 Tm) |
| Jupiter MOID | 28.1835 AU (4.21619 Tm) |
| TJupiter | 5.424 |
| Physical characteristics | |
| Dimensions | 87–276 km[5][6] |
| Temperature | ~ 44 K |
| B–V = 0.650±0.085[7] V–R = 0.527±0.069[7] | |
| 6.81[2] | |
Discovery and naming edit
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."[8]
Planetary symbols are no longer much used in astronomy, so Rhadamanthus never received a symbol in the astronomical literature. There is no standard symbol for Rhadamanthus used by astrologers either. A Unicode proposal for dwarf-planet symbols notes a symbol 
that has been used, but leaves it unexplained.[9]
References edit
- ^ a b "Rhadamanthus". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
- ^ a b c d Marc W. Buie (7 June 2008). "Orbit Fit and Astrometric record for 38083". SwRI (Space Science Department). Retrieved 4 October 2015.
- ^ a b "MPEC 2006-X45 : Distant Minor Planets". Minor Planet Center & Tamkin Foundation Computer Network. 21 December 2006. Archived from the original on 28 August 2008. Retrieved 18 July 2008.(older provisional Plutino listing)
- ^ "JPL Small-Body Database Browser: 38083 Rhadamanthus (1999 HX11)" (2008-06-07 last obs). Retrieved 12 April 2016.
- ^ Rhadamanthus Archived 28 June 2006 at the Wayback Machine
- ^ "ABSOLUTE MAGNITUDE (H)". NASA/JPL. Archived from the original on 2 March 2001. Retrieved 23 September 2015.
- ^ a b Hainaut, O. R.; Boehnhardt, H.; Protopapa, S. (October 2012). "Colours of minor bodies in the outer solar system. II. A statistical analysis revisited". Astronomy and Astrophysics. 546: 20. arXiv:1209.1896. Bibcode:2012A&A...546A.115H. doi:10.1051/0004-6361/201219566. Retrieved 26 September 2019.
- ^ "Minor Planet Circulars/Minor Planets and Comets, MPC-46112" (PDF). Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A. Retrieved 19 April 2015.
- ^ Miller, Kirk (26 October 2021). "Unicode request for dwarf-planet symbols" (PDF). unicode.org.
External links edit
- 38083 Rhadamanthus at the JPL Small-Body Database