(469372) 2001 QF298

(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]

(469372) 2001 QF298
2001 QF298 imaged by the Hubble Space Telescope in 2006.
Discovery[1]
Discovered byMarc W. Buie[2]
Cerro Tololo (807)
Discovery dateAugust 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 arc4526 days (12.39 yr)
Aphelion43.726 AU (6.5413 Tm)
Perihelion34.756 AU (5.1994 Tm)
39.241 AU (5.8704 Tm)
Eccentricity0.11429
245.82 yr (89784.4 d)
4.73 km/s
154.29°
0° 0m 14.435s /day
Inclination22.408°
164.24°
41.215°
Physical characteristics
Dimensions408.2+40.2
−44.9 km[6]
0.071+0.020
−0.014[6]
B−V=0.67 ± 0.07
V−R=0.39 ± 0.06[6]
5.43 ± 0.07,[6] 5.2[3]

    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.[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]

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    References
    1. "MPEC 2001-T54 : 2001 QE298, 2001 QF298, 2001 QG298, 2001 QH298, 2001 QJ298". IAU Minor Planet Center. 13 October 2001. Retrieved 22 May 2012. (K01QT8F)
    2. "List Of Transneptunian Objects". Minor Planet Center. Archived from the original on 21 June 2007. Retrieved 10 May 2012.
    3. "JPL Small-Body Database Browser: (2001 QF298)" (2009-09-14 last obs (U=4)). Jet Propulsion Laboratory. Retrieved 30 March 2016.
    4. "MPEC 2006-X45 : Distant Minor Planets". Minor Planet Center & Tamkin Foundation Computer Network. 21 December 2006. Retrieved 24 July 2008.
    5. Marc W. Buie (12 June 2006). "Orbit Fit and Astrometric record for 01QF298". SwRI (Space Science Department). Archived from the original on 14 July 2012. Retrieved 24 July 2008.
    6. Mommert, Michael; Harris, A. W.; Kiss, C.; Pál, A.; Santos-Sanz, P.; Stansberry, J.; Delsanti, A.; Vilenius, E.; Müller, T. G.; Peixinho, N.; Lellouch, E.; Szalai, N.; Henry, F.; Duffard, R.; Fornasier, S.; Hartogh, P.; Mueller, M.; Ortiz, J. L.; Protopapa, S.; Rengel, M.; Thirouin, A. (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. arXiv:1202.3657. Bibcode:2012A&A...541A..93M. doi:10.1051/0004-6361/201118562.
    7. 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. Bibcode:2007AJ....134.2186D. doi:10.1086/522783.
    8. 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
    9. Tancredi, G. (2010). "Physical and dynamical characteristics of icy "dwarf planets" (plutoids)". Icy Bodies of the Solar System: Proceedings IAU Symposium No. 263, 2009.

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