- 2003 AZ84
Infobox Planet
bgcolour = #FFFFC0
name = mp|2003 AZ|84
symbol =
caption =
discovery = yes
discoverer = C. Trujillo,
M. Brown, E. Helin,
S. Pravdo, K. Lawrence, and M. Hicks
discovered =January 13 ,2003
mp_name = mp|2003 AZ|84
alt_names = "none"
mp_category =plutino
orbit_ref = cite web
author=Marc W. Buie
date=2006/02/25
title=Orbit Fit and Astrometric record for 03AZ84
publisher=SwRI (Space Science Department)
url=http://www.boulder.swri.edu/~buie/kbo/astrom/03AZ84.html
accessdate=2008-07-23] cite web
date=2006-02-25 last obs
title=JPL Small-Body Database Browser: (2003 AZ84)
url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2003AZ84
accessdate=2008-07-23]
epoch =December 31 ,2006 (JD 2454100.5)
aphelion = 6 964.422 Gm (46.554 AU)
perihelion = 4 833.387 Gm (32.309 AU)
semimajor = 5 898.905 Gm (39.432 AU)
semiminor =
orbital_circ =
eccentricity = 0.181
period = 90 441.418 d (247.62 a)
avg_speed = 4.70 km/s
max_speed =
min_speed =
inclination = 13.595°
asc_node = 252.139°
arg_peri = 14.917°
mean_anomaly = 214.954°
satellites=1 (68 km)
physical_characteristics = yes
dimensions =686 ± 96 kmStansberry, Grundy, Brown, Spencer, Trilling, Cruikshank, Luc Margot "Physical Properties of Kuiper Belt and Centaur Objects: Constraints from Spitzer Space Telescope" (2007) [http://arxiv.org/abs/astro-ph/0702538v1 Preprint arXiv] ]
radius = 343 km
surface_area =
volume = 2.04e|8 km³
mass = 4.1e|20? kg
density = 2.0? g/cm³
surface_grav = 0.2040? m/s²
escape_velocity = 0.3859? km/s
sidereal_day =
rot_velocity =
albedo =0.09–0.16
single_temperature =~44 K
spectral_type = B-V=0.70; V-R=0.36 [ [http://www.physics.nau.edu/~tegler/research/survey.htm Magnitudes & Colors ] ]
abs_magnitude =3.82mp|2003 AZ|84, also written as 2003 AZ84, is a
Trans-Neptunian object . It was discovered onJanuary 13 ,2003 by C. Trujillo, M. Brown, E. Helin, S. Pravdo, K. Lawrence, and M. Hicks at thePalomar Observatory using the Schmidt telescope.Orbit
It is classified as a
plutino , which means that it is in a 3:2orbital resonance withNeptune , similar to that ofPluto . It orbits the sun just under 248 Earth years.atellite
The discovery of a satellite of mp|2003 AZ|84 was reported in IAUC 8812 on
22 February 2007 .cite web
date=4 March 2007
title=2003 AZ84
publisher=Johnston's Archive
author=Wm. Robert Johnston
url=http://www.johnstonsarchive.net/astro/astmoons/am2003az84.html
accessdate=2007-02-25] cite web
date=2007-03-15
title=Distant EKO's
publisher= [http://www.boulder.swri.edu/ekonews/ The Kuiper Belt Electronic Newsletter]
author=Joel Parker
url=http://www.boulder.swri.edu/ekonews/issues/past/n051/html/index.html
accessdate=2007-02-25] The orbit of this satellite has yet to be determined, but was measured with a separation of 0.22 arcsec and anapparent magnitude difference of 5.0. It is estimated to be about 68 ± 20 km in diameter.References
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