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(469372) 2001 QF298

Trans-Neptunian object

Field	Value
minorplanet	yes
background	#C2E0FF
image	(469372) 2001 QF298 hst.jpg
caption	imaged by the Hubble Space Telescope in 2006.
name
discovery_ref
discoverer	Marc W. Buie
Cerro Tololo (807)
discovered	August 19, 2001
mpc_name
alt_names	none
mp_category	TNOplutino{{cite web
date	2006-12-21
title	MPEC 2006-X45 : Distant Minor Planets
publisher	Minor Planet Center & Tamkin Foundation Computer Network
url	http://cfa-www.harvard.edu/iau/mpec/K06/K06X45.html
accessdate	2008-07-24}}{{cite web
author	Marc W. Buie
author-link	Marc W. Buie
date	2006-06-12
title	Orbit Fit and Astrometric record for 01QF298
publisher	SwRI (Space Science Department)
url	http://www.boulder.swri.edu/~buie/kbo/astrom/01QF298.html
accessdate	2008-07-24
url-status	dead
archive-url	https://web.archive.org/web/20120214062120/http://www.boulder.swri.edu/~buie/kbo/astrom/01QF298.html
archive-date	2012-02-14
orbit_ref
epoch	13 January 2016 (JD 2457400.5)
aphelion	43.726 AU
perihelion	34.756 AU
semimajor	39.241 AU
eccentricity	0.11429
period	245.82 yr (89784.4 d)
inclination	22.408°
asc_node	164.24°
arg_peri	41.215°
mean_anomaly	154.29°
avg_speed	4.73 km/s
satellites	0
dimensions	408.2 km
abs_magnitude	5.43 ± 0.07, 5.2
spectral_type	B−V=0.67 ± 0.07
V−R=0.39 ± 0.06
albedo	0.071
mean_motion	/day
observation_arc	4526 days (12.39 yr)
uncertainty	3

Cerro Tololo (807) |author-link = Marc W. Buie |url-status=dead |archive-url = https://web.archive.org/web/20120214062120/http://www.boulder.swri.edu/~buie/kbo/astrom/01QF298.html |archive-date = 2012-02-14 V−R=0.39 ± 0.06

****, provisionally known as , is a resonant trans-Neptunian object that resides in the Kuiper belt in the outermost region of the Solar System. It was discovered on August 19, 2001 by Marc W. Buie. is a plutino, meaning that it is locked in a 3:2 orbital resonance with Neptune, much like Pluto.

Physical characteristics

In 2012, the size of was estimated based on thermal radiation data obtained with the Herschel Space Telescope. The result was 408.2 km.

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

Dwarf planet candidate

When first discovered, was calculated to have an absolute magnitude (H) of 4.7. Light-curve-amplitude analysis from 2008 showed only small deviations, which suggested that could be a spheroid about 480 km in diameter with small albedo spots and hence a dwarf planet. 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 km (the same criteria as in the first paper).

References

"List Of Transneptunian Objects". [[Minor Planet Center]].
(May 2012). "TNOs are cool: A survey of the trans-Neptunian region—V. Physical characterization of 18 Plutinos using ''Herschel''-PACS observations". [[Astronomy & Astrophysics]].
(2007). "The Meudon Multicolor Survey (2MS) of Centaurs and Trans-Neptunian Objects: From Visible to Infrared Colors". The Astronomical Journal.
Tancredi, G., & Favre, S. (2008) [http://www.lpi.usra.edu/meetings/acm2008/pdf/8261.pdf ''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.

Info: Wikipedia Source

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plutinos discoveries-by-marc-buie astronomical-objects-discovered-in-2001

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