Astronomy:(469372) 2001 QF298
_2001_QF298_hst.jpg) 2001 QF298 imaged by the Hubble Space Telescope in 2006. | |
| Discovery[2] | |
|---|---|
| Discovered by | Marc W. Buie[1] Cerro Tololo (807) |
| Discovery date | August 19, 2001 |
| Designations | |
| 2001 QF298 | |
| none | |
| Minor planet category | 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) |
| |{{{apsis}}}|helion}} | 43.726 astronomical unit|AU (6.5413 Tm) |
| |{{{apsis}}}|helion}} | 34.756 AU (5.1994 Tm) |
| 39.241 AU (5.8704 Tm) | |
| Eccentricity | 0.11429 |
| Orbital period | 245.82 yr (89784.4 d) |
| Average Orbital speed | 4.73 km/s |
| Mean anomaly | 154.29° |
| Mean motion | 0° 0m 14.435s /day |
| Inclination | 22.408° |
| Longitude of ascending node | 164.24° |
| 41.215° | |
| Physical characteristics | |
| Dimensions | 408.2+40.2−44.9 km[6] |
| Geometric albedo | 0.071+0.020−0.014[6] |
| B−V=0.67 ± 0.07 V−R=0.39 ± 0.06[6] | |
| Absolute magnitude (H) | 5.43 ± 0.07,[6] 5.2[3] |
(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.[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
- ↑ 1.0 1.1 "List Of Transneptunian Objects". Minor Planet Center. http://cfa-www.harvard.edu/iau/lists/TNOs.html. Retrieved 10 May 2012.
- ↑ 2.0 2.1 "MPEC 2001-T54 : 2001 QE298, 2001 QF298, 2001 QG298, 2001 QH298, 2001 QJ298". IAU Minor Planet Center. 2001-10-13. https://www.minorplanetcenter.net/mpec/K01/K01T54.html. Retrieved 2012-05-22. (K01QT8F)
- ↑ 3.0 3.1 3.2 "JPL Small-Body Database Browser: (2001 QF298)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001QF298. Retrieved 30 March 2016.
- ↑ "MPEC 2006-X45 : Distant Minor Planets". Minor Planet Center & Tamkin Foundation Computer Network. 2006-12-21. http://cfa-www.harvard.edu/iau/mpec/K06/K06X45.html. Retrieved 2008-07-24.
- ↑ Marc W. Buie (2006-06-12). "Orbit Fit and Astrometric record for 01QF298". SwRI (Space Science Department). http://www.boulder.swri.edu/~buie/kbo/astrom/01QF298.html. Retrieved 2008-07-24.
- ↑ 6.0 6.1 6.2 6.3 6.4 6.5 6.6 Mommert, Michael; Harris, A. W.; Kiss, C.; Pál, A.; Santos-Sanz, P.; Stansberry, J.; Delsanti, A.; Vilenius, E. et al. (May 2012). "TNOs are cool: A survey of the trans-Neptunian region—V. Physical characterization of 18 Plutinos using Herschel-PACS observations". Astronomy & Astrophysics 541: A93. doi:10.1051/0004-6361/201118562. Bibcode: 2012A&A...541A..93M.
- ↑ Doressoundiram, A.; Peixinho, N.; Moullet, A.; Fornasier, S.; Barucci, M. A.; Beuzit, J. -L.; Veillet, C. (2007). "The Meudon Multicolor Survey (2MS) of Centaurs and Trans-Neptunian Objects: From Visible to Infrared Colors". The Astronomical Journal 134 (6): 2186. doi:10.1086/522783. Bibcode: 2007AJ....134.2186D.
- ↑ 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
- ↑ Tancredi, G. (2010). "Physical and dynamical characteristics of icy "dwarf planets" (plutoids)". Icy Bodies of the Solar System: Proceedings IAU Symposium No. 263, 2009 263: 173. doi:10.1017/S1743921310001717. Bibcode: 2010IAUS..263..173T.
External links
- (469372) 2001 QF298 at AstDyS-2, Asteroids—Dynamic Site
- (469372) 2001 QF298 at the JPL Small-Body Database
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