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(523639) 2010 RE64

From Wikipedia, the free encyclopedia

(523639) 2010 RE64
Discovery [1]
Discovered byPan-STARRS 1
Discovery siteHaleakala Obs.
Discovery date11 July 2010
MPC designation(523639) 2010 RE64
2010 RE64
TNO[2] · SDO[3]
Orbital characteristics[2]
Epoch 27 April 2019 (JD 2458600.5)
Uncertainty parameter· 2 [1]
Observation arc7.47 yr (2,729 d)
Aphelion94.746 AU
Perihelion36.443 AU
65.595 AU
531.27 yr (194,045 d)
0° 0m 6.84s / day
Physical characteristics
Mean diameter
561 km[4]
580 km (est. at 0.09)[5]
0.09 (est.)[4][5]

(523639) 2010 RE64, provisional designation 2010 RE64, is a trans-Neptunian object in the scattered disc located in the outermost region of the Solar System, approximately 570 kilometers (350 miles) in diameter. It was discovered on 11 July 2010 by the Pan-STARRS-1 survey at the Haleakala Observatory, Hawaii, in the United States.[1] American astronomer Michael Brown considers it a "highly likely" dwarf planet.[4]

Classification and orbit

2010 RE64 has an observation arc of 1774 days,[6] and there are currently no known precovery images to help refine its orbit. It is currently 53.7 AU from the Sun.[6] Based on JPL's best-fit solution for the orbit, it reached aphelion around 1829. It is estimated to come to perihelion around 2079.[2] Although the discovery is credited to Pan-STARRS, the object was first announced in a Minor Planet Electronic Circular by American astronomers David Rabinowitz, Megan Schwamb and Suzanne Tourtellotte observing from La Silla Observatory on 9 September 2010.[7]

Numbering and naming

This minor planet was numbered by the Minor Planet Center on 25 September 2018 (M.P.C. 111778).[8] As of 2018, it has not been named.[1]

Physical characteristics

Assuming a generic trans-Neptunian albedo of 0.09, it is about 580 kilometers in diameter.[5] However, since the true albedo is unknown and it has an absolute magnitude of 4.4,[2] it could easily be from about 370 to 820 km in diameter.[5] Michael Brown estimates a similar diameter of 561 kilometers, also using a geometric albedo of 0.09.[4]


  1. ^ a b c d e f "523639 (2010 RE64)". Minor Planet Center. Retrieved 8 October 2018.
  2. ^ a b c d e "JPL Small-Body Database Browser: 523639 (2010 RE64)" (2017-12-30 last obs.). Jet Propulsion Laboratory. Retrieved 8 October 2018.
  3. ^ Marc W. Buie. "Orbit Fit and Astrometric record for 10RE64" (last observation: 2011-10-21 using 16 of 16 observations over 1.1 yr). SwRI (Space Science Department). Archived from the original on 22 June 2011. Retrieved 3 December 2009.
  4. ^ a b c d Brown, Michael E. "How many dwarf planets are there in the outer solar system?". California Institute of Technology. Retrieved 8 October 2018.
  5. ^ a b c d "Asteroid Size Estimator". CNEOS NASA/JPL. Retrieved 8 October 2018.
  6. ^ a b c "AstDyS – (523639) 2010 RE64". Department of Mathematics, University of Pisa, Italy. Retrieved 8 October 2018.
  7. ^ "MPEC 2010-T36 : 2010 RE64". IAU Minor Planet Center. 2010-10-06. Retrieved 2011-07-06.
  8. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 8 October 2018.

External links

This page was last edited on 6 January 2019, at 07:47
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