(469372) 2001 QF298
Trans-Neptunian object
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(469372) 2001 QF298, provisionally known as 2001 QF298, is a resonant trans-Neptunian object that resides in the Kuiper belt in the outermost region of the Solar System.[6] It was discovered on August 19, 2001 by Marc W. Buie.[2] 2001 QF298 is a plutino, meaning that it is locked in a 3:2 orbital resonance with Neptune, much like Pluto.[6]
_2001_QF298_hst.jpg)
2001 QF298 imaged by the Hubble Space Telescope in 2006. | |
| Discovery[1] | |
|---|---|
| Discovered by | Marc W. Buie[2] Cerro Tololo (807) |
| Discovery date | August 19, 2001 |
| Designations | |
| 2001 QF298 | |
| none | |
| TNO[3] · plutino[4][5] | |
| Orbital characteristics[3] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 3 | |
| Observation arc | 4526 days (12.39 yr) |
| Aphelion | 43.726 AU (6.5413 Tm) |
| Perihelion | 34.756 AU (5.1994 Tm) |
| 39.241 AU (5.8704 Tm) | |
| Eccentricity | 0.11429 |
| 245.82 yr (89784.4 d) | |
Average orbital speed | 4.73 km/s |
| 154.29° | |
| 0° 0m 14.435s /day | |
| Inclination | 22.408° |
| 164.24° | |
| 41.215° | |
| Known satellites | 0 |
| Physical characteristics | |
| Dimensions | 408.2+40.2 â44.9 km[6] |
| 0.071+0.020 â0.014[6] | |
| BâV=0.67 ± 0.07 VâR=0.39 ± 0.06[6] | |
| 5.43 ± 0.07,[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
â44.9 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.[1] 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]
