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With an [[absolute magnitude]] of 4.5, it is [[List of possible dwarf planets|likely a dwarf planet]].<ref name="Brown-dplist">{{cite web
With an [[absolute magnitude]] of 4.5, it is [[List of possible dwarf planets|likely a dwarf planet]].<ref name="Brown-dplist">{{cite web
|title=How many dwarf planets are there in the outer solar system? (updates daily)
|title=How many dwarf planets are there in the outer solar system? (updates daily)
|publisher=California Institute of Technology
|publisher=[[California Institute of Technology]]
|author=Michael E. Brown
|author=Michael E. Brown
|author-link=Michael E. Brown
|author-link=Michael E. Brown

Revision as of 23:44, 25 October 2017

(120348) 2004 TY364
Discovery
Discovered byM. E. Brown
C. Trujillo
D. L. Rabinowitz
Discovery sitePalomar Obs.
Discovery date3 October 2004
Designations
(120348) 2004 TY364
TNO [1] · cubewano[2]
SCATEXTD[3]
Other[4]
Orbital characteristics[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 3
Observation arc11834 days (32.40 yr)
Aphelion41.384 AU (6.1910 Tm)
Perihelion36.176 AU (5.4119 Tm)
38.780 AU (5.8014 Tm)
Eccentricity0.067140
241.50 yr (88208.5 d)
265.93°
0° 0m 14.692s / day
Inclination24.8499°
140.6141°
359.71°
Earth MOID35.1896 AU (5.26429 Tm)
Jupiter MOID30.8216 AU (4.61085 Tm)
Physical characteristics
Dimensions512+37
−40 km[5]
11.70 h (0.488 d)
0.107+0.020
−0.015[5]
20.4[6]
4.520±0.070,[5] 4.8[1]

(120348) 2004 TY364, provisionally known as 2004 TY364, is a trans-Neptunian object. It is an inner classical Kuiper belt object in the definition by Gladman, Marsden, and Van Laerhoven (e<0.24).[2] Its inclination of almost 25 degrees disqualifies it as such in Marc Buie's definition[specify].[3] It is also not listed as a scattered disc object by the Minor Planet Center.[7] It was discovered by Michael E. Brown, Chad Trujillo and David L. Rabinowitz on October 3, 2004 at the Palomar Observatory.

With an absolute magnitude of 4.5, it is likely a dwarf planet.[8] However, light-curve analysis has questioned whether it really is one.[9]

As of 2014, it is 39.2 AU from the Sun.[6]

References

  1. ^ a b c d "JPL Small-Body Database Browser: 120348 (2004 TY364)" (2005-09-01 last obs; arc: 22.13 years). Retrieved 7 April 2016.
  2. ^ a b Nomenclature in the outer Solar System
  3. ^ a b Marc W. Buie. "Orbit Fit and Astrometric record for 120348" (last observation: 2005-08-31 using 20 of 21 observations over 22 years). SwRI (Space Science Department). Retrieved 2014-11-13.
  4. ^ "MPEC 2010-S44 :Distant Minor Planets (2010 OCT. 11.0 TT)". IAU Minor Planet Center. 2010-09-25. Retrieved 2014-11-16.
  5. ^ a b c Lellouch, E.; Santos-Sanz, P.; Lacerda, P.; Mommert, M.; Duffard, R.; Ortiz, J. L.; Müller, T. G.; Fornasier, S.; Stansberry, J.; Kiss, Cs.; Vilenius, E.; Mueller, M.; Peixinho, N.; Moreno, R.; Groussin, O.; Delsanti, A.; Harris, A. W. (September 2013). ""TNOs are Cool": A survey of the trans-Neptunian region. IX. Thermal properties of Kuiper belt objects and Centaurs from combined Herschel and Spitzer observations" (PDF). Astronomy & Astrophysics. 557: A60. Bibcode:2013A&A...557A..60L. doi:10.1051/0004-6361/201322047. Retrieved 7 November 2014.
  6. ^ a b "AstDys (120348) 2004TY364 Ephemerides". Department of Mathematics, University of Pisa, Italy. Retrieved 2009-12-10.
  7. ^ "List Of Centaurs and Scattered-Disk Objects". Minor Planet Center. Retrieved 2014-11-13.
  8. ^ Michael E. Brown. "How many dwarf planets are there in the outer solar system? (updates daily)". California Institute of Technology. Archived from the original on 2011-10-18. Retrieved 2011-08-25. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
  9. ^ Gonzalo Tancredi; Sofía Favre (13 October 2008). "Dwarf Planet & Plutoid Headquarters". Portal Uruguayo de Astronomía. Retrieved 2010-09-22. {{cite web}}: Unknown parameter |last-author-amp= ignored (|name-list-style= suggested) (help) (Which are the dwarfs in the Solar System?)


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