(44594) 1999 OX₃

(44594) 1999 OX₃
	Orbit diagram (top view, 1999 OX3 in blue)
Discovery
Discovered by	Mauna Kea
Discovery date	21 July 1999
Designations
MPC designation	(44594) 1999 OX3
Minor planet category	TNO; centaur (DES)
Orbital characteristics
	Epoch 13 January 2016 (JD 2457400.5)
	Uncertainty parameter 3
Observation arc	6010 days (16.45 yr)
Aphelion	46.592 AU (6.9701 Tm) (Q)
Perihelion	17.574 AU (2.6290 Tm) (q)
Semi-major axis	32.083 AU (4.7995 Tm) (a)
Eccentricity	0.45222 (e)
Orbital period (sidereal)	181.73 yr (66376.5 d)
Mean anomaly	343.89° (M)
Mean motion	0° 0m 19.525s / day (n)
Inclination	2.6237° (i)
Longitude of ascending node	259.21° (Ω)
Argument of perihelion	144.62° (ω)
Earth MOID	16.5828 AU (2.48075 Tm)
Jupiter MOID	12.5941 AU (1.88405 Tm)
Physical characteristics
Dimensions	192 km
Synodic rotation period	9.26 h (0.386 d)
Geometric albedo	0.09 (assumed)
Absolute magnitude (H)	7.2

(44594) 1999 OX₃ is a trans-Neptunian object with a centaur-like orbit.

Classification

Neptune has a semi-major axis of 30 AU and (44594) 1999 OX₃ 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. (44594) 1999 OX₃ 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, (44594) 1999 OX₃ is a centaur.^[3]

References

^ "Discovery Circumstances: Numbered Minor Planets (40001)-(45000)". IAU: Minor Planet Center. Archived from the original on 1 November 2008. Retrieved 21 December 2008. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
^ ^a ^b ^c "JPL Small-Body Database Browser: 44594 (1999 OX3)" (last observation: 2006-10-14). Retrieved 6 April 2016.
^ ^a ^b Marc W. Buie (14 October 2006). "Orbit Fit and Astrometric record for 44594". SwRI (Space Science Department). Retrieved 30 September 2008.
^ Wm. Robert Johnston (22 August 2008). "List of Known Trans-Neptunian Objects". Johnston's Archive. Archived from the original on 28 September 2008. Retrieved 2008-09-30. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)

External links

Orbital simulation from JPL (Java) / Ephemeris
(44594) 1999 OX3 at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

This article about a centaur (minor planet) or trans-Neptunian object is a stub. You can help Wikipedia by expanding it.

[MPC-1] "Discovery Circumstances: Numbered Minor Planets (40001)-(45000)". IAU: Minor Planet Center. Archived from the original on 1 November 2008. Retrieved 21 December 2008. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)

[jpldata-2] "JPL Small-Body Database Browser: 44594 (1999 OX3)" (last observation: 2006-10-14). Retrieved 6 April 2016.

[Buie-3] Marc W. Buie (14 October 2006). "Orbit Fit and Astrometric record for 44594". SwRI (Space Science Department). Retrieved 30 September 2008.

[johnston-4] Wm. Robert Johnston (22 August 2008). "List of Known Trans-Neptunian Objects". Johnston's Archive. Archived from the original on 28 September 2008. Retrieved 2008-09-30. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)

[1]

[2]

[3]

[4]