(90568) 2004 GV9

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(90568) 2004 GV9
Discovery[1]
Discovered by NEAT
Discovery date April 13, 2004
Designations
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
Semi-major axis 41.934 AU
Eccentricity 0.07762
Orbital period 271.55 y
Mean anomaly 34.162°
Inclination 22.0197°
Longitude of ascending node 250.5467°
Argument of perihelion 290.787°
Physical characteristics
Dimensions 677±70 km[5]
Mass 1.1–5.0×1020 kg[6]
Sidereal rotation period 5.86 h[4]
Albedo 0.08±0.02[5]
Spectral type B−V=0.95,
V−R=0.52[7]
B0−V0=0.843[8]
Apparent magnitude 19.9[9]
Absolute magnitude (H) 3.9[4]

    (90568) 2004 GV9 (also written (90568) 2004 GV9) is a trans-Neptunian object. It 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. The Spitzer Space Telescope has estimated it to have a diameter of 677±70 km.[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 47 times with precovery images back to 1954.[4]

    References

    1. ↑ 1.0 1.1 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. ↑ 2.0 2.1 "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. ↑ 4.0 4.1 4.2 4.3 "JPL Small-Body Database Browser: 90568 (2004 GV9)". 2011-04-11 last obs. Retrieved 2013-09-04. 
    5. ↑ 5.0 5.1 5.2 John Stansberry, Will Grundy, Mike Brown, Dale Cruikshank, John Spencer, David Trilling, Jean-Luc Margot (2007). "Physical Properties of Kuiper Belt and Centaur Objects: Constraints from Spitzer Space Telescope". arXiv:astro-ph/0702538 [astro-ph].
    6. ↑ (Radius of 303.5 km and density of 0.97 = 1.1×1020 kg mass. Radius of 373.5 km and density of 2.3 = 5.0×1020 kg mass)
    7. ↑ Tegler, Stephen C. (2007-02-01). "Kuiper Belt Object Magnitudes and Surface Colors". Retrieved 2009-12-30. 
    8. ↑ 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.
    9. ↑ "AstDys (90568) 2004GV9 Ephemerides". Department of Mathematics, University of Pisa, Italy. Retrieved 2009-10-06. 
    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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