(523692) 2014 EZ 51

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Asteroid
(523692) 2014 EZ 51
Properties of the orbit ( animation )
Epoch:  April 27, 2019 ( JD 2,458,600.5)
Orbit type SDO
Major semi-axis 52.525  AU
eccentricity 0.226
Perihelion - aphelion 40.632 AU - 64.418 AU
Inclination of the orbit plane 10.3 °
Length of the ascending node 27.5 °
Argument of the periapsis 329.6 °
Time of passage of the perihelion August 24, 2116
Sidereal period 380 a 8.2 M
Physical Properties
Medium diameter 615 km
770 km
Albedo 0.09-0.10
Absolute brightness 3.8 likes
history
Explorer Pan-STARRS
Date of discovery April 18, 2010
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.

(523692) 2014 EZ 51 is a Trans-Neptunian object in the Kuiper belt that is classified as SDO . Because of its size, the asteroid is a dwarf planet candidate .

discovery

(523692) 2014 EZ 51 was discovered on April 18, 2010 as part of the Pan-STARRS program at the Haleakala Observatory . He received minor planet number 523692 from the IAU on September 25, 2018 .

The asteroid's observation arc begins with the official discovery observation in April 2010. In October 2018, a total of 190 observations over a period of 8 years were available.

properties

Orbit

2014 EZ 51 orbits the sun in 380.68 years in an elliptical orbit between 40.63  AU and 64.42 AU from its center. The orbital eccentricity is 0.226, the orbit is 10.26 ° inclined to the ecliptic . The next time he will pass perihelion in 2116.

size

A calculated diameter of 615 to 770 km is currently assumed; The latter value is based on an assumed reflectivity of 9% and an absolute brightness of 3.8  m . It can therefore be assumed that 2014 EZ 51 is in hydrostatic equilibrium and that the asteroid is therefore a dwarf planet candidate , based on Mike Brown's taxonomic 5-class system . The latter himself estimates the diameter of the asteroid at 615 km due to a slightly higher assumed albedo of 10% and an absolute brightness of 4.2  m . Mike Brown assumes that 2014 EZ 51 is most likely a dwarf planet.

Provisions of the diameter for 2014 EZ 51
year Dimensions km source
2018 770.0 Johnston
2018 615.0 Brown
The most precise determination is marked in bold .

Until 2018 nothing could be learned about color indices and rotating light curves, so that the period of rotation, the alignment of the poles and the shape of the asteroid are so far unknown.

See also

Individual evidence

  1. ↑ MPC : (523692) = 2014 EZ51 (September 2017)
  2. ^ Johnston's Archives: List of Known Trans-Neptunian Objects
  3. ↑ M. Brown : How many dwarf planets are there in the outer solar system? (November 2018)