(523675) 2013 PV 74

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Asteroid
(523675) 2013 PV 74
Properties of the orbit ( animation )
Epoch:  April 27, 2019 ( JD 2,458,600.5)
Orbit type SDO ,
"Distant Object"
Major semi-axis 50.252  AU
eccentricity 0.232
Perihelion - aphelion 38.57 AU - 61.935 AU
Inclination of the orbit plane 2.3 °
Length of the ascending node 49 °
Argument of the periapsis 237.5 °
Time of passage of the perihelion February 18, 1989
Sidereal period 356 a 2.9 M.
Mean orbital velocity 4.167 km / s
Physical Properties
Medium diameter approx. 343 km
Albedo 0.08-0.09
Absolute brightness 5.6 - 5.7 mag
history
Explorer Pan-STARRS :
B. Gibson
T. Goggia
N. Primak
A. Schultz
M. Willman
Date of discovery 4th August 2013
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.

(523675) 2013 PV 74 is a large Trans-Neptunian object that is classified as a Scattered Disk Object (SDO) in terms of orbital dynamics . Due to its size, the asteroid may be one of the dwarf planet candidates .

discovery

2013 PV 74 was discovered on August 4, 2013 by a team of astronomers , consisting of B. Gibson, T. Goggia, N. Primak, A. Schultz and M. Willman, on images taken as part of the Pan-STARRS project with the 1 , 8 m Ritchey Chretien telescope (PS1) at Haleakalā Observatory ( Maui ) on August 6, 2010, discovered. The discovery was announced on July 17, 2016 the asteroid was on 25 September 2018 the IAU , the Minor Planet -number five hundred twenty-three thousand six hundred and seventy-five .

After its discovery, PV 74 could be identified on photos up to September 24, 2008, which were taken as part of the Sloan Digital Sky Survey program (SDSS) at the Apache Point Observatory ( New Mexico ) , in 2013, thus changing its observation period Extend four years to more accurately calculate its orbit. Since then, the planetoid has been observed through various earth-based telescopes. In October 2018, a total of 218 observations over a period of 9 years were available. The last observation so far was carried out in September 2017 on the Pan-STARRS telescope. (As of March 20, 2019)

properties

Orbit

2013 PV 74 orbits the sun in 356.24 years in an elliptical orbit between 38.57  AU and 61.94 AU from its center. The orbital eccentricity is 0.232, the orbit is 2.28 ° inclined to the ecliptic . The planetoid is currently 41.14 AU from the sun. He last passed through perihelion in 1989, so the next perihelion should take place in 2345.

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

size

A diameter of 343 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 370,000 km 2 . The apparent magnitude of 2013 PV 74 is 22.01  m .

Since it is conceivable that 2013 PV 74 is in hydrostatic equilibrium due to its size and could therefore be largely round, it may meet the criteria for classification as a dwarf planet . Mike Brown expects that it is at 2013 PV 74 to maybe is a dwarf planet.

Provisions of the diameter for 2013 PV 74
year Dimensions km source
2018 336.0 Johnston
2018 343.0 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 523675 . SwRI (Space Science Department). Retrieved March 20, 2019.
  2. ↑ a b MPC : MPEC List Of Centaurs and Scattered-Disk Objects . IAU . Retrieved March 20, 2019.
  3. ↑ a b c Wm. R. Johnston: List of Known Trans-Neptunian Objects . Johnston's Archives. October 7, 2018. Retrieved March 20, 2019.
  4. ↑ a b c (523675) 2013 PV74 at the IAU Minor Planet Center (English) Retrieved March 20, 2019.
  5. ↑ v ≈ π * a / period (1 + sqrt (1-e²))
  6. ↑ MPC : MPEC 2016-O120: 2013 PV74 . IAU . July 17, 2016. Retrieved March 20, 2019.
  7. ↑ MPC : MPC / MPO / MPS Archive . IAU . Retrieved March 20, 2019. Reference there: MPC 111779
  8. ↑ (523675) 2013 PV74 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved March 20, 2019. Template: JPL Small-Body Database Browser / Maintenance / Alt
  9. ↑ (523675) 2013 PV74 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 20, 2019.