Astronomy:38083 Rhadamanthus
| Discovery | |
|---|---|
| Discovered by | Deep Ecliptic Survey |
| Discovery date | 17 April 1999 |
| Designations | |
| (38083) Rhadamanthus | |
| Pronunciation | /rædəˈmænθəs/[3] |
| Named after | Rhadamanthus |
| 1999 HX11 | |
| Minor planet category | TNO[1][2] |
| Adjectives | Rhadamanthean, Rhadamanthian /rædəˈmænθiən/[3] |
| Orbital characteristics[1][4] | |
| Epoch 20 November 2017 (JD 2458078) | |
| Uncertainty parameter 3 | |
| Observation arc | 5110 days (13.99 yr) |
| |{{{apsis}}}|helion}} | 45.139 astronomical unit|AU (6.7527 Tm) |
| |{{{apsis}}}|helion}} | 32.782 AU (4.9041 Tm) |
| 38.777 AU (5.8010 Tm) | |
| Eccentricity | 0.1546 |
| Orbital period | 241.47 yr (88197.3 d) |
| Average Orbital speed | 4.73 km/s |
| Mean anomaly | 97.148° |
| Mean motion | 0° 0m 14.46s / day |
| Inclination | 12.793° |
| Longitude of ascending node | 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] |
| Physics | ~ 44 K |
| B–V = 0.650±0.085[7] V–R = 0.527±0.069[7] | |
| Absolute magnitude (H) | 6.81[1] |
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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.[1][2]
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."[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
- ↑ 1.0 1.1 1.2 1.3 Marc W. Buie (7 June 2008). "Orbit Fit and Astrometric record for 38083". SwRI (Space Science Department). http://www.boulder.swri.edu/~buie/kbo/astrom/38083.html.
- ↑ 2.0 2.1 "MPEC 2006-X45 : Distant Minor Planets". Minor Planet Center & Tamkin Foundation Computer Network. 21 December 2006. http://cfa-www.harvard.edu/iau/mpec/K06/K06X45.html.(older provisional Plutino listing)
- ↑ 3.0 3.1 Rhadamanthus (3rd ed.), Oxford University Press, September 2005, http://oed.com/search?searchType=dictionary&q=Rhadamanthus (Subscription or UK public library membership required.)
- ↑ "JPL Small-Body Database Browser: 38083 Rhadamanthus (1999 HX11)". https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=Rhadamanthus.
- ↑ Rhadamanthus
- ↑ "ABSOLUTE MAGNITUDE (H)". NASA/JPL. http://neo.jpl.nasa.gov/glossary/h.html.
- ↑ 7.0 7.1 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. doi:10.1051/0004-6361/201219566. Bibcode: 2012A&A...546A.115H. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012A&A...546A.115H. Retrieved 26 September 2019.
- ↑ "Minor Planet Circulars/Minor Planets and Comets, MPC-46112". Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/2002/MPC_20020724.pdf.
- ↑ Miller, Kirk (26 October 2021). "Unicode request for dwarf-planet symbols". https://www.unicode.org/L2/L2021/21224-dwarf-planet-syms.pdf.
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