2014 JP 80

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Asteroid
2014 JP 80
Properties of the orbit ( animation )
Epoch:  April 27, 2019 ( JD 2,458,600.5)
Orbit type Plutino ,
"Distant Object"
Major semi-axis 39.645  AU
eccentricity 0.069
Perihelion - aphelion 36,905 AU - 42,384 AU
Inclination of the orbit plane 19.4 °
Length of the ascending node 146.3 °
Argument of the periapsis 320.5 °
Time of passage of the perihelion January 2, 2127
Sidereal period 249 a 7.6 M
Mean orbital velocity 4.692 km / s
Physical Properties
Medium diameter approx. 468 km
Albedo 0.07-0.09
Rotation period 0.5 h (0.021 d )
Absolute brightness 5.1 - 5.3 mag
history
Explorer Pan-STARRS :
B. Gibson
T. Goggia
N. Primak
A. Schultz
M. Willman
Date of discovery May 7, 2014
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.

2014 JP 80 is a large trans-Neptunian object in the Kuiper Belt , which is classified as Plutino in terms of orbital dynamics . Because of its size, the asteroid is a dwarf planet candidate .

discovery

2014 JP 80 was discovered on May 7, 2014 by an astronomical team consisting of B. Gibson, T. Goggia, N. Primak, A. Schultz and M. Willman as part of the Pan-STARRS project with the 1.8 m Ritchey -Chretien Telescope (PS1) discovered at Haleakalā Observatory ( Maui ). The discovery was announced on July 17, 2016.

After its discovery, JP 80 could be identified on photos up to July 19, 2010, which were also taken as part of the Pan-STARRS program, and thus its observation period was extended by four years in order to calculate its orbit more precisely. In September 2018, there were a total of 247 observations over a period of 9 years. The last observation so far was again carried out in August 2018 at the Pan-STARRS telescope. (As of February 26, 2019)

properties

Orbit

2014 JP 80 orbits the sun in 249.63 years on a slightly elliptical orbit between 36.91  AU and 42.38 AU from its center. The orbit eccentricity is 0.069, the orbit is 19.36 ° inclined to the ecliptic . The planetoid is currently 39.80 AU from the sun. The next time it passes through perihelion in 2127, the last perihelion should have been in 1877.

Marc Buie ( DES ) classifies the planetoid as Plutino , while the Minor Planet Center classifies it as a non-SDO and generally as a “distant object” .

Size and rotation

A diameter of around 468 km is currently assumed, based on a reflectivity of 7% and an absolute brightness of 5.3  m . Assuming a diameter of 468 km, this results in a total surface of around 688,000 km 2 . The apparent magnitude of 2014 JP 80 is 21.56  m .

Since it can be assumed that 2014 JP 80 is in hydrostatic equilibrium due to its size and therefore has to be largely round, it should meet the criteria for classification as a dwarf planet . Mike Brown expects that it is at 2014 JP 80 to possibly is a dwarf planet.

Based on inconclusive light curve observations in 2009, 2014 JP 80 rotates once around its axis in half an hour. The result would be that in a 2014 JP 80 year it performed over four million self-rotations (“days”). However, this is very unlikely, since the rotation speed at the equator of the planetoid would be enormous; this value is also well below the period of rotation of the fastest rotating celestial body Haumea with just under four hours.

Provisions of the diameter for 2014 JP 80
year Dimensions km source
2018 423.0 Johnston
2018 468.0 Brown
The most precise determination is marked in bold .

See also

Web links

Individual evidence

  1. ^ A b Marc W. Buie : Orbit Fit and Astrometric record for 14JP80 . SwRI (Space Science Department). Retrieved February 27, 2019.
  2. ↑ a b c 2014 JP80 at the IAU Minor Planet Center (English) Retrieved on February 27, 2019.
  3. ↑ v ≈ π * a / period (1 + sqrt (1-e²))
  4. ↑ a b A. Thirouin, S. Sheppard : The Plutino Population: An Abundance of Contact Binaries (PDF) . In: The Astronomical Journal . 155, No. 6, June 2018, p. 248, 16. arxiv : 1804.09695 . bibcode : 2018AJ .... 155..248T . doi : 10.3847 / 1538-3881 / aac0ff .
  5. ↑ MPC : MPEC 2016-0143: 2014 JP80 . IAU . July 17, 2016. Retrieved February 27, 2019.
  6. ↑ 2014 JP80 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved February 27, 2019. Template: JPL Small-Body Database Browser / Maintenance / Alt
  7. ↑ MPC : MPEC List Of Centaurs and Scattered-Disk Objects . IAU . Retrieved February 26, 2019.
  8. ↑ 2014 JP80 in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
  9. ↑ a b Mike Brown : How many dwarf planets are there in the outer solar system? . CalTech . November 12, 2018. Retrieved February 27, 2019.
  10. ^ Wm. R. Johnston: List of Known Trans-Neptunian Objects . Johnston's Archives. October 7, 2018. Retrieved February 27, 2019.