(523639) 2010 RE64

(523639) 2010 RE64
Discovery [1]
Discovered by Pan-STARRS 1
Discovery site Haleakala Obs.
Discovery date 11 July 2010
Designations
MPC designation (523639) 2010 RE64
2010 RE64
TNO [2] · SDO[3]
distant [1]
Orbital characteristics [2]
Epoch 27 April 2019 (JD 2458600.5)
Uncertainty parameter 3 · 2 [1]
Observation arc 7.47 yr (2,729 d)
Aphelion 94.746 AU
Perihelion 36.443 AU
65.595 AU
Eccentricity 0.4444
531.27 yr (194,045 d)
320.94°
0° 0m 6.84s / day
Inclination 13.550°
67.306°
20.572°
Physical characteristics
Mean diameter
 561 km[4]
580 km (est. at 0.09)[5]
0.09 (est.)[4][5]
21.45[6]
4.4[1][2]

    (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]

    References

    1. 1 2 3 4 5 6 "523639 (2010 RE64)". Minor Planet Center. Retrieved 8 October 2018.
    2. 1 2 3 4 5 "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). Retrieved 2009-12-03.
    4. 1 2 3 4 Brown, Michael E. "How many dwarf planets are there in the outer solar system?". California Institute of Technology. Retrieved 8 October 2018.
    5. 1 2 3 4 "Asteroid Size Estimator". CNEOS NASA/JPL. Retrieved 8 October 2018.
    6. 1 2 3 "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.

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