2001 QF298
| Discovery[2] | |
|---|---|
| Discovered by | Marc W. Buie[1] Cerro Tololo (807) |
| Discovery date | August 19, 2001 |
| Designations | |
| MPC designation | 2001 QF298 |
| none | |
| 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) |
| 39.500 AU (5909.11 Gm) | |
| Eccentricity | 0.1068 |
| 248.26 a (90676 d) |
|
|
Average orbital speed
|
4.73 km/s |
| 148.03° | |
| Inclination | 22.329° |
| 164.17° | |
| 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] |
| 5.43 ± 0.07[6] | |
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2001 QF298, also written as 2001 QF298, is a trans-Neptunian object (TNO) 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 thermal radiation data obtained with the Herschel Space Telescope. The result was 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 kilometres (300 mi) 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 kilometres (280 mi)[9] (the same criteria as in the first paper).[8]
References
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- ↑ 2.0 2.1 Lua error in package.lua at line 80: module 'strict' not found. (K01QT8F)
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- ↑ 8.0 8.1 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
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
