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(44594) 1999 OX3

Trans-Neptunian object


Trans-Neptunian object

FieldValue
minorplanetyes
name(44594)
background#C2E0FF
image(44594) 1999 OX3.tiff
captionOrbit diagram (top view, 1999 OX3 in blue)
discovery_ref
discovererJ. J. Kavelaars
B. Gladman
M. Holman
J.-M. Petit
discovery_siteMauna Kea Obs.
discovered21 July 1999
mpc_name(44594)
alt_names
named_after
mp_categoryTNOcentaur
distant
orbit_ref
epoch4 September 2017 (JD 2458000.5)
uncertainty2
observation_arc17.35 yr (6,338 days)
aphelion46.576 AU
perihelion17.589 AU
semimajor32.083 AU
eccentricity0.4518
period181.72 yr (66,375 days)
mean_anomaly347.21°
mean_motion/ day
inclination2.6248°
asc_node259.10°
arg_peri144.53°
dimensions151 km
159.78 km (calculated)
rotationh
albedo0.10 (assumed)
spectral_typeRRC
abs_magnitude(R) (R)7.17.47.85

B. Gladman M. Holman J.-M. Petit distant 159.78 km (calculated)

**** is an eccentric trans-Neptunian object with a centaur-like orbit from the outer Solar System, approximately 150 kilometers in diameter. It was discovered on 21 July 1999, by astronomers John Kavelaars, Brett Gladman, Matthew Holman and Jean-Marc Petit at Mauna Kea Observatories, Hawaii, United States.

Orbit and classification

orbits the Sun at a distance of 17.6–46.6 AU once every 181 years and 9 months (66,375 days). Its orbit has an eccentricity of 0.45 and an inclination of 3° with respect to the ecliptic. The body's observation arc begins with its official discovery observation at Mauna Kea in 1999.

Neptune has a semi-major axis of 30 AU and 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. 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, is a centaur.

Physical characteristics

In July 2009, a rotational lightcurve of was obtained from photometric observations. Lightcurve analysis gave a rotation period of 9.26 hours with a brightness amplitude of 0.11 magnitude (). The period, however, is ambiguous with alternative solutions (13.4 and 15.45 hours).

Numbering and naming

This minor planet was numbered by the Minor Planet Center on 22 August 2002. As of 2025, it has not been named.

Notes

References

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Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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