(529780) 2010 MQ 116

from Wikipedia, the free encyclopedia
Asteroid
2010 MQ 116
Properties of the orbit ( animation )
Epoch:  April 27, 2019 ( JD 2,458,600.5)
Orbit type SDO or
CKBO ( «Hot» ),
«Distant Object»
Major semi-axis 41,952  AU
eccentricity 0.178
Perihelion - aphelion 34,486 AU - 49,418 AU
Inclination of the orbit plane 30.8 °
Length of the ascending node 5.2 °
Argument of the periapsis 166.8 °
Time of passage of the perihelion September 10, 2113
Sidereal period 271 a 8.8 M
Mean orbital velocity 4.561 km / s
Physical Properties
Medium diameter approx. 358 km
Albedo 0.08-0.09
Absolute brightness 5.4 - 5.7 mag
history
Explorer Pan-STARRS :
B. Gibson
T. Goggia
N. Primak
A. Schultz
M. Willman
Date of discovery June 16, 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.

2010 MQ 116 is a large trans-Neptunian object in the Kuiper Belt , which is classified as a Scattered Disk Object (SDO) or a Cubewano (CKBO) in terms of its orbit dynamics. Due to its size, the asteroid may be one of the dwarf planet candidates .

discovery

2010 MQ 116 was discovered on June 16, 2010 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 26, 2016.

After its discovery, MQ 116 could be identified in photos up to June 15, 2010, which were also taken as part of the Pan-STARRS program, and so its observation period was extended by one day in order to calculate its orbit more precisely. So far, the planetoid has only been observed through the Pan-STARRS telescope. In December 2018, a total of 70 observations were made over a period of 8 years. The last observation so far was carried out in January 2018 at the Pan-STARRS telescope (PS1). (As of March 18, 2019)

properties

Orbit

2010 MQ 116 orbits the sun in 271.73 years on a slightly elliptical orbit between 34.48  AU and 49.42 AU from its center. The orbit eccentricity is 0.178, the orbit is inclined 30.83 ° to the ecliptic . The planetoid is currently 47.01 AU from the Sun. The next time it passes through perihelion in 2113, the last perihelion is likely to have taken place in 1842.

Marc Buie ( DES ) classifies the planetoid as SDO , while the Minor Planet Center does not have a specific classification; the latter classifies it as a non-SDO and generally as a “distant object” . The Johnston's Archive, however, lists him as Cubewano , whereby he would belong to the "hot" classic KBO in terms of rail dynamics .

size

A diameter of 358 km is currently assumed, based on a reflectivity of 8% and an absolute brightness of 5.7  m . Based on this diameter, the total surface area is around 403,000 km 2 . The apparent magnitude of 2010 MQ 116 is 22.32  m .

Since it is conceivable that 2010 MQ 116 is in hydrostatic equilibrium due to its size and could thus be largely round, it may meet the criteria for classification as a dwarf planet . Mike Brown expects that it is at 2010 MQ 116 to perhaps is a dwarf planet.

Provisions of the diameter for 2010 MQ 116
year Dimensions km source
2018 386.0 Johnston
2018 358.0 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 10MQ116 . SwRI (Space Science Department). Retrieved March 18, 2019.
  2. ↑ a b c Wm. R. Johnston: List of Known Trans-Neptunian Objects . Johnston's Archives. October 7, 2018. Retrieved March 18, 2019.
  3. ↑ a b c (529780) 2010 MQ116 at the IAU Minor Planet Center (English) Retrieved March 18, 2019.
  4. ↑ v ≈ π * a / period (1 + sqrt (1-e²))
  5. ↑ MPC : MPEC 2016-O310: 2010 MQ116 . IAU . July 26, 2016. Retrieved March 18, 2019.
  6. ↑ (529780) 2010 MQ116 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved March 18, 2019. Template: JPL Small-Body Database Browser / Maintenance / Alt
  7. ↑ MPC : MPEC 2010-S44: Distant Minor Planets (2010 OCT.11.0 TT) . IAU . September 25, 2010. Retrieved March 18, 2019.
  8. ↑ MPC : MPEC List Of Centaurs and Scattered-Disk Objects . IAU . Retrieved March 18, 2019.
  9. ↑ (529780) 2010 MQ116 in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
  10. ↑ a b Mike Brown : How many dwarf planets are there in the outer solar system? . CalTech . November 12, 2018. Retrieved March 18, 2019.