2004 OJ ₁₄

Asteroid 2004 OJ 14
Properties of the orbit ( animation ) Epoch:  April 27, 2019 ( JD 2,458,600.5)
Orbit type	SDO , "Distant Object"
Major semi-axis	55,803  AU
eccentricity	0.296
Perihelion - aphelion	39.298 AU - 72.308 AU
Inclination of the orbit plane	22.4 °
Length of the ascending node	104.1 °
Argument of the periapsis	132 °
Time of passage of the perihelion	December 23, 1965
Sidereal period	416 a 10.4 M
Mean orbital velocity	3.955 km / s
Physical Properties
Medium diameter	approx. 303 km
Albedo	0.04-0.09
Absolute brightness	6.4 - 6.7 mag
Spectral class	C B-R = 1.420
history
Explorer	Lawrence H. Wasserman David E. Trilling J.R. Lovering Marc W. Buie James L. Elliot J.F. Kane M.E. Teyssier Robert L. Millis
Date of discovery	July 17, 2004
Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items.

2004 OJ ₁₄ is a large trans-Neptunian object that is classified as a Scattered Disk Object (SDO) in terms of its orbit dynamics . Due to its size, the asteroid is one of the dwarf planet candidates .

discovery

2004 OJ ₁₄ was discovered on July 17, 2004 by a team of astronomers consisting of Larry Wasserman, David Trilling, J. Lovering, Marc Buie , James Elliot , J. Kane, M. Teyssier and Robert Millis, with the 4.0 m Víctor M. Blanco telescope ( DE Cam) discovered at Cerro Tololo Observatory ( Chile ). The discovery was made on September 4, 2004 along with 2003 QF ₁₁₃ , 2004 PR ₁₀₇ , 2004 PS ₁₀₇ and 2004 PT ₁₀₇ announced ,

The observation arc of the planetoid begins with the official observation on July 17, 2004. So far, the planetoid has only been observed by the Cerro Tololo and Las Campanas observatories (Chile). In April 2017, there were only 13 observations over a period of 3 years. The last observation so far was made in July 2007 at the Las Campanas Observatory. (As of March 28, 2019)

properties

Orbit

2004 OJ ₁₄ orbits the sun in 416.87 years in an elliptical orbit between 39.29  AU and 72.31 AU from its center. The orbit eccentricity is 0.296, the orbit is inclined 22.41 ° with respect to the ecliptic . The planetoid is currently 47.75 AU from the sun. The next time it passes through perihelion in 1965, the last pass through perihelion is likely to have occurred in 2382.

Both Marc Buie ( DES ) and the Minor Planet Center (MPC) classify the planetoid as an SDO ; the latter also generally lists it as a "distant object" .

size

A diameter of 303 km is currently assumed, based on a reflectivity of 4% and an absolute brightness of 6.7  ^m . Based on this diameter, the total surface area is around 288,000 km ² .

Since it is conceivable that 2004 OJ ₁₄ is in hydrostatic equilibrium due to its size and thus could be largely round, it may meet the criteria for classification as a dwarf planet . Mike Brown believes that it is in 2004 OJ ₁₄ to perhaps is a dwarf planet.

2004 OJ ₁₄ seems to have a bluish (neutral) coloration, which is why the albedo is assumed to be comparatively low.

Provisions of the diameter for 2004 OJ ₁₄

year	Dimensions km	source
2018	232.0	Johnston
2018	303.0	Brown
The most precise determination is marked in bold .

See also

• List of trans-Neptunian objects
• List of dwarf planets of the solar system
• List of asteroids
• List of moons from asteroids

Web links

• How many dwarf planets are there in the outer solar system? Current list of the largest TNOs from Mike Brown
• Free the dwarf planets! Mike Brown's column on the IAU and the dwarf planets regarding their classifications (23 August 2011)

Individual evidence

1. ^ ^{A b} Marc W. Buie : Orbit Fit and Astrometric record for 04OJ14 . SwRI (Space Science Department). Retrieved March 28, 2019.
2. ↑ ^{a b} MPC : MPEC 2010-S44: Distant Minor Planets (2010 OCT.11.0 TT) . IAU . September 25, 2010. Retrieved March 28, 2019.
3. ↑ ^{a b} MPC : MPEC List Of Centaurs and Scattered-Disk Objects . IAU . Retrieved March 28, 2019.
4. ↑ ^{a b c} 2004 OJ14 at the IAU Minor Planet Center (English). Accessed March 28, 2019.
5. ↑ v ≈ π * a / period (1 + sqrt (1-e²))
6. ↑ MPC : MPEC 2004-R15: 2003 QF113, 2004 OJ14, 2004 PR107, 2004 PS107, 2004 PT107 . IAU . September 4, 2004. Retrieved March 28, 2019.
7. ↑ 2004 OJ14 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved March 28, 2019.
8. ^ ^{A b} Wm. R. Johnston: List of Known Trans-Neptunian Objects . Johnston's Archives. October 7, 2018. Retrieved March 28, 2019.
9. ↑ ^{a b c} Mike Brown : How many dwarf planets are there in the outer solar system? . CalTech . November 12, 2018. Retrieved March 28, 2019.