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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]

(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
MPC designation
2001 QF298
Alternative designations
none
Minor planet category
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)
Semi-major axis
39.241 AU (5.8704 Tm)
Eccentricity0.11429
Orbital period (sidereal)
245.82 yr (89784.4 d)
Average orbital speed
4.73 km/s
Mean anomaly
154.29°
Mean motion
0° 0m 14.435s /day
Inclination22.408°
Longitude of ascending node
164.24°
Argument of perihelion
41.215°
Physical characteristics
Dimensions408.2+40.2
−44.9 km[6]
Geometric albedo
0.071+0.020
−0.014[6]
Spectral type
B−V=0.67 ± 0.07
V−R=0.39 ± 0.06[6]
Absolute magnitude (H)
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]


    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 19 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 February 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.



    На других языках

    [de] (469372) 2001 QF298

    (469372) 2001 QF298 ist ein großes transneptunisches Objekt im Kuipergürtel, das bahndynamisch als Plutino (2:3–Resonantes KBO) eingestuft wird. Aufgrund seiner Größe ist der Asteroid ein Zwergplanetenkandidat.
    - [en] (469372) 2001 QF298

    [ru] (469372) 2001 QF298

    (469372) 2001 QF298 — транснептуновый объект, расположенный в поясе Койпера. Был обнаружен 19 августа 2001 года Марком У. Би. 2001 QF298 классифицируется как плутино[3][4], это означает, что он находится в стабильном орбитальном резонансе 2:3 с Нептуном, так же как и Плутон.


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