(44594) 1999 OX3

Infobox Planet
minorplanet = yes
width = 25em
bgcolour = #FFFFC0
name = mp|(44594) 1999 OX|3
symbol =


caption =
discovery = yes
discovery_ref =
discoverer = Mauna Kea
discovered = July 21 1999
designations = yes
mp_name = mp|(44594) 1999 OX|3
alt_names =
mp_category = TNO
centaur (DES)cite web
author=Marc W. Buie
date=2006/10/14
title=Orbit Fit and Astrometric record for 44594
publisher=SwRI (Space Science Department)
url=http://www.boulder.swri.edu/~buie/kbo/astrom/44594.html
accessdate=2008-09-30]
orbit_ref = cite web
date=2006-10-14 last obs
title =JPL Small-Body Database Browser: 44594 (1999 OX3)
url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=44594
accessdate=2008-09-30]
epoch = 2008-11-30 (2454800.5)
aphelion = 47.169 AU (Q)
perihelion = 17.644 AU (q)
(near Uranus)
semimajor = 32.407 AU (a)
(near Neptune)
eccentricity = 0.4555
period = 184.49 yr
avg_speed =
inclination = 2.62°
asc_node = 259.13°
mean_anomaly = 330.47° (M)
arg_peri = 143.92°
satellites =
physical_characteristics = yes
dimensions = 192 kmcite web
date=22 August 2008
title=List of Known Trans-Neptunian Objects
publisher=Johnston's Archive
author=Wm. Robert Johnston
url=http://www.johnstonsarchive.net/astro/tnoslist.html
accessdate=2008-09-30]
mass =
density =
surface_grav =
sidereal_day =
axial_tilt =
albedo = 0.09 (assumed)
spectral_type =
abs_magnitude = 6.7

mp|(44594) 1999 OX|3 is a Trans-Neptunian object with a centaur like orbit.

Classification

Neptune has a semi-major axis of 30 AU and mp|(44594) 1999 OX|3 has a semi-major axis of 32 AU. The Minor Planet Center (MPC) does not classify this object as a centaur because the MPC defines centaurs as having a semi-major axis of less than 30.066 AU. mp|(44594) 1999 OX|3 crosses the orbits of both Neptune and Uranus and has an inclination of only 2.62°. The Deep Ecliptic Survey (DES) defines centaurs using a dynamical classification scheme, based on the behavior of orbital integrations over 10 million years. The DES defines centaurs as nonresonant objects whose osculating perihelia are less than the osculating semimajor axis of Neptune at any time during the integration. Using the dynamical definition of a centaur, mp|(44594) 1999 OX|3 is a centaur.

References

External links

* [http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=44594;orb=1;view=Far Orbital simulation] from JPL (Java) / [http://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=44594 Ephemeris]