(90568) 2004 GV₉

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

(90568) 2004 GV₉

Hubble Space Telescope image of 2004 GV9, taken on March 2010
Discovery[1]
Discovered by	NEAT
Discovery date	13 April 2004
Designations
MPC designation	(90568) 2004 GV9
Minor planet category	Cubewano (MPC)[2] Extended (DES)[3]
Orbital characteristics[4]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 2
Observation arc	22031 days (60.32 yr)
Earliest precovery date	21 December 1954
Aphelion	45.618 AU (6.8244 Tm)
Perihelion	38.7281 AU (5.79364 Tm)
Semi-major axis	42.173 AU (6.3090 Tm)
Eccentricity	0.081681
Orbital period	273.88 yr (100034 d)
Mean anomaly	34.6030°
Mean motion	0° 0m 12.956s / day
Inclination	21.9718°
Longitude of ascending node	250.6142°
Argument of perihelion	293.200°
Earth MOID	37.7917 AU (5.65356 Tm)
Jupiter MOID	33.6786 AU (5.03825 Tm)
Physical characteristics
Dimensions	680±34 km[5]
Rotation period	5.86 h (0.244 d)
Sidereal rotation period	5.86 h[4]
Geometric albedo	0.077+0.0084 −0.0077[5]
Spectral type	BR[5] B−V=0.95, V−R=0.52[6] B0−V0=0.843[7]
Apparent magnitude	19.9[8]
Absolute magnitude (H)	4.25±0.04[5] 4.0[4]

Brown estimates that is very likely a dwarf planet.[9] A diameter of 680±34 km has been determined from combined observations of the Herschel and Spitzer space telescopes.[5] Tancredi notes that light-curve-amplitude analysis shows only small deviations, suggesting that (90568) 2004 GV₉ could be a spheroid with small albedo spots and hence a dwarf planet.[10] However, its low albedo suggests it has never been resurfaced and thus is unlikely to have planetary geology.

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