2014 SV 349

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Asteroid
2014 SV 349
Properties of the orbit ( animation )
Epoch:  April 27, 2019 ( JD 2,458,600.5)
Orbit type RKBO 2: 7 or
SDO ,
"Distant Object"
Major semi-axis 61.996  AU
eccentricity 0.452
Perihelion - aphelion 34 AU - 89.991 AU
Inclination of the orbit plane 17.8 °
Length of the ascending node 56.7 °
Argument of the periapsis 24.3 °
Time of passage of the perihelion April 24, 2104
Sidereal period 488 a 1.8 M.
Mean orbital velocity 3.752 km / s
Physical Properties
Medium diameter approx. 373 km
Albedo 0.08-0.09
Absolute brightness 5.2 - 5.6 mag
history
Explorer Scott S. Sheppard
Chadwick A. Trujillo
Date of discovery 19th September 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 SV 349 is a large trans-Neptunian object that is classified as a resonant Kuiper belt object (2: 7 resonance) or as a scattered disk object (SDO). Due to its size, the asteroid may be one of the dwarf planet candidates .

discovery

2014 SV 349 was discovered on September 19, 2014 by Scott Sheppard and Chad Trujillo with the 4.0 m Víctor M. Blanco telescope (DECam) at the Cerro Tololo Observatory ( Chile ). The discovery was announced on August 31, 2016.

The observation sheet of the asteroid begins with the official discovery observation on September 19, 2014. In August 2017, a total of 13 observations over a period of 245 days were available. The last observation so far was carried out in May 2015 at the Las Campanas Observatory (Chile). (As of March 14, 2019)

properties

Orbit

2014 SV 349 orbits the sun in 488.15 years on a strongly elliptical orbit between 34.00  AU and 89.99 AU from its center. The orbital eccentricity is 0.452, the orbit is 17.79 ° inclined to the ecliptic . The planetoid is currently 61.33 AU from the Sun. The next time it passes through perihelion in 2104, the last perihelion should have been in 1616.

Marc Buie ( DES ) classifies the planetoid as RKBO ( 2: 7 resonance with Neptune ) or as SDO , while the Minor Planet Center only classifies it as SDO; the latter also generally lists it as a “distant object” .

size

A diameter of 373 km is currently assumed, based on a reflectivity of 8% and an absolute brightness of 5.6  m . Based on this diameter, the total surface area is around 437,000 km 2 . The apparent magnitude of 2014 SV 349 is 23.26  m .

Since it is conceivable that 2014 SV 349 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 believes that it is in 2014 SV 349 to perhaps is a dwarf planet.

Provisions of the diameter for 2014 SV 349
year Dimensions km source
2018 404.0 Johnston
2018 373.0 Brown
The most precise determination is marked in bold .

See also

Web links

Individual evidence

  1. ↑ a b c Marc W. Buie : Orbit Fit and Astrometric record for 14SV349 . SwRI (Space Science Department). Retrieved March 14, 2019.
  2. ↑ a b c d Wm. R. Johnston: List of Known Trans-Neptunian Objects . Johnston's Archives. October 7, 2018. Retrieved March 14, 2019.
  3. ↑ a b MPC : MPEC List Of Centaurs and Scattered-Disk Objects . IAU . Retrieved March 14, 2019.
  4. ↑ a b c 2014 SV349 at the IAU Minor Planet Center (English) Retrieved on March 14, 2019.
  5. ↑ v ≈ π * a / period (1 + sqrt (1-e²))
  6. ↑ MPC : MPEC 2016-Q75: 2014 SV349 . IAU . August 31, 2016. Accessed March 14, 2019.
  7. ↑ 2014 SV349 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved March 14, 2019. Template: JPL Small-Body Database Browser / Maintenance / Alt
  8. ↑ 2014 SV349 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 March 14, 2019.