2001 QF298

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2001 QF298
Discovered by Marc W. Buie[1]
Cerro Tololo (807)
Discovery date August 19, 2001
MPC designation 2001 QF298
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)
4.73 km/s
Inclination 22.329°
Physical characteristics
Dimensions 408.2+40.2
Albedo 0.071+0.020
Temperature ≈44 K
Spectral type
B−V=0.67 ± 0.07
V−R=0.39 ± 0.06[6]
5.43 ± 0.07[6]

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[edit]

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

In the visible light, the object appears to have a neutral or slightly red color.[7]

Dwarf planet candidate[edit]

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]


  1. ^ a b "List Of Transneptunian Objects". Minor Planet Center. Retrieved 10 May 2012. 
  2. ^ a b "MPEC 2001-T54 : 2001 QE298, 2001 QF298, 2001 QG298, 2001 QH298, 2001 QJ298". IAU Minor Planet Center. 2001-10-13. Retrieved 2012-05-22.  (K01QT8F)
  3. ^ "MPEC 2006-X45 : Distant Minor Planets". Minor Planet Center & Tamkin Foundation Computer Network. 2006-12-21. Retrieved 2008-07-24. 
  4. ^ Marc W. Buie (2006-06-12). "Orbit Fit and Astrometric record for 01QF298". SwRI (Space Science Department). Retrieved 2008-07-24. 
  5. ^ "JPL Small-Body Database Browser: (2001 QF298)" (2009-09-14 last obs (U=4)). Jet Propulsion Laboratory. Retrieved 2012-05-22. 
  6. ^ a b c d e f g 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.  edit
  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.  edit
  8. ^ a b 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.