(90568) 2004 GV9

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(90568) 2004 GV9
Discovered by NEAT
Discovery date April 13, 2004
MPC designation (90568) 2004 GV9
Minor planet category Cubewano (MPC)[2]
Extended (DES)[3]
Orbital characteristics[4]
Epoch JD 2456600.5 (4 November 2013)
Aphelion 45.188 AU
Perihelion 38.6791 AU
41.934 AU
Eccentricity 0.07762
271.55 y
Inclination 22.0197°
Physical characteristics
Dimensions 680±34[5]
5.86 h[4]
Albedo 0.077+0.0084
Spectral type

(90568) 2004 GV9 (also written (90568) 2004 GV9) is a trans-Neptunian object that was discovered on April 13, 2004 by NEAT.[1] It is currently listed as a cubewano by the Minor Planet Center.[2]

It is very likely a dwarf planet.[9] A diameter of 680±34 km has been calculated from combined observations of the Herschel and Spitzer space telescopes.[5] Light-curve-amplitude analysis shows only small deviations, suggesting that 2004 GV9 could be a spheroid with small albedo spots and hence a dwarf planet.[10]

It has been observed forty-seven times, with precovery images back to 1954.[4]


  1. ^ a b Spahr, Timothy B. (2004-04-14). "MPEC 2004-G32 : 2004 GV9". IAU Minor Planet Center. Harvard-Smithsonian Center for Astrophysics. Retrieved 2010-01-06. 
  2. ^ a b "MPEC 2009-R09 : Distant Minor Planets (2009 SEPT. 16.0 TT)". IAU Minor Planet Center. 2009-09-04. Retrieved 2009-10-04. 
  3. ^ Marc W. Buie (2004-06-09 using 46 of 47 observations). "Orbit Fit and Astrometric record for 90568". SwRI (Space Science Department). Retrieved 2009-10-04. 
  4. ^ a b c d "JPL Small-Body Database Browser: 90568 (2004 GV9)". 2011-04-11 last obs. Retrieved 2013-09-04. 
  5. ^ a b c E. Vilenius, C. Kiss, M. Mommert, T. M¨uller, P. Santos-Sanz, A. Pal, J. Stansberry, M. Mueller, N. Peixinho, S. Fornasier, E. Lellouch, A. Delsanti, A. Thirouin, J. L. Ortiz, R. Duffard, D. Perna, N. Szalai, S. Protopapa, F. Henry, D. Hestroffer, M. Rengel, E. Dotto, and P. Hartogh (2012). "TNOs are Cool: A survey of the trans-Neptunian region VI. Herschel⋆/PACS observations and thermal modeling of 19 classical Kuiper belt objects". arXiv:1204.0697v1 [astro-ph].
  6. ^ Tegler, Stephen C. (2007-02-01). "Kuiper Belt Object Magnitudes and Surface Colors". Retrieved 2009-12-30. 
  7. ^ David L. Rabinowitz, Bradley E. Schaefer, Martha W. Schaefer, Suzanne W. Tourtellotte (2008). "The Youthful Appearance of the 2003 EL61 Collisional Family". arXiv:0804.2864.
  8. ^ "AstDys (90568) 2004GV9 Ephemerides". Department of Mathematics, University of Pisa, Italy. Retrieved 2009-10-06. 
  9. ^ Michael E. Brown. "How many dwarf planets are there in the outer solar system? (updates daily)". California Institute of Technology. Retrieved 2014-06-11. 
  10. ^ Tancredi, G., & Favre, S. (2008) Which are the dwarfs in the Solar System?. Depto. Astronomía, Fac. Ciencias, Montevideo, Uruguay; Observatorio Astronómico Los Molinos, MEC, Uruguay. Retrieved 10-08-2011

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