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2001 Qf298

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2001 Qf298

2001 QF298
Discovery[2]
Discovered by Marc W. Buie[1]
Cerro Tololo (807)
Discovery date August 19, 2001
Designations
MPC designation 2001 QF298
Alternative names none
Minor planet category TNO
Plutino[3][4]
Orbital characteristics[5]
Epoch 2012-Mar-14 (JD 2456000.5)
Aphelion 43.722 AU (6540.71 Gm)
Perihelion 35.277 AU (5277.36 Gm)
Semi-major axis 39.500 AU (5909.11 Gm)
Eccentricity 0.1068
Orbital period 248.26 a
(90676 d)
Average orbital speed 4.73 km/s
Mean anomaly 148.03°
Inclination 22.329°
Longitude of ascending node 164.17°
Argument of perihelion 42.157°
Physical characteristics
Dimensions 408.2+40.2
−44.9
 km[6]
Albedo 0.071+0.020
−0.014
[6]
Temperature ≈44 K
Spectral type B-V=0.67 ± 0.07
V-R=0.39 ± 0.06[6]
Absolute magnitude (H) 5.43 ± 0.07[6]

2001 QF298, also written as 2001 QF298, is a trans-Neptunian object that resides in the Kuiper belt.[6] It was discovered on August 19, 2001 by Marc W. Buie.[1] 2001 QF298 is a plutino, meaning that it is locked in a 3:2 orbital resonance with Neptune much like Pluto.[6]

Physical characteristics

In 2012 the size of 2001 QF298 was estimated based on the thermal radiation data obtained with Herschel Space Telescope. The result is 408.2+40.2
−44.9
 km.[6]

In the visible light the object appears to have a neutral or slightly red color.[7]

Dwarf planet candidate

When first discovered 2001 QF298 was calculated to have an absolute magnitude (H) of 4.7.[2] Light-curve-amplitude analysis from 2008 showed only small deviations, which suggested that 2001 QF298 could be a spheroid about 480 km (>450 km) in diameter with small albedo spots and hence a dwarf planet.[8] It is not included in the same authors' list of dwarf-planet candidates from 2010, because having an absolute magnitude of 5.4 and assumed albedo of 0.1 it would be less than the cut-off size of 450 km.[9] (the same criteria as in the first paper)[8]

References


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