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(501546) 2014 JJ80

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(501546) 2014 JJ80
Discovery[1]
Discovered byPan-STARRS 1
Discovery siteHaleakalā Obs.
Discovery date9 July 2013
Designations
(501546) 2014 JJ80
2014 JJ80
TNO[2] · other[3]
p-DP[4] · distant[1]
Orbital characteristics[2]
Epoch 27 April 2019 (JD 2458600.5)
Uncertainty parameter 2
Observation arc6.92 yr (2,526 d)
Aphelion55.066 AU
Perihelion31.297 AU
43.182 AU
Eccentricity0.2752
283.76 yr (103,645 d)
342.32°
0° 0m 12.6s / day
Inclination18.674°
261.43°
≈ 18 July 2033[5]
97.702°
Physical characteristics
344 km (est.)[4]
352 km (est.)[3]
0.08 (assumed)[4]
0.09 (assumed)[3]
5.5[1][2]

(501546) 2014 JJ80, prov. designation: 2014 JJ80, is a trans-Neptunian object from the outermost region of the Solar System. It was discovered on 9 July 2013, by astronomers with the Pan-STARRS survey at Haleakala Observatory, Hawaii, United States.[1] It is a dwarf planet candidate, as it measures approximately 350 kilometers (220 miles) in diameter.

Orbit and classification

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2014 JJ80 orbits the Sun at a distance of 31.3–55.1 AU once every 283 years and 9 months (103,645 days; semi-major axis of 43.18 AU). Its orbit has an eccentricity of 0.28 and an inclination of 19° with respect to the ecliptic.[2] The body's observation arc begins at Haleakalā with a precovery taken in August 2010, nearly 3 years prior to its official discovery observation.[1]

Numbering and naming

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This minor planet was numbered by the Minor Planet Center on 5 October 2017 and received the number 501546 in the minor planet catalog (M.P.C. 106396).[6] As of 2021, it has not been named.[1]

Physical characteristics

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According to American astronomer Michael Brown and the Johnston's archive, 2014 JJ80 measures 344 and 352 kilometers in diameter based on an assumed albedo of 0.08 and 0.09, respectively.[3][4] On his website, Brown lists this object as a "possible" dwarf planet (200–400 km), which is the category with the lowest certainty in his 5-class taxonomic system.[4] As of 2021, no spectral type and color indices, nor a rotational lightcurve have been obtained from spectroscopic and photometric observations. The body's color, rotation period, pole and shape remain unknown.[2][7]

References

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  1. ^ a b c d e f "501546 (2014 JJ80)". Minor Planet Center. Retrieved 3 December 2018.
  2. ^ a b c d e "JPL Small-Body Database Browser: 501546 (2014 JJ80)" (2017-07-19 last obs.). Jet Propulsion Laboratory. Retrieved 3 December 2018.
  3. ^ a b c d Johnston, Wm. Robert (7 October 2018). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 3 December 2018.
  4. ^ a b c d e Brown, Michael E. "How many dwarf planets are there in the outer solar system?". California Institute of Technology. Retrieved 3 December 2018.
  5. ^ JPL Horizons Observer Location: @sun (Perihelion occurs when deldot changes from negative to positive. Uncertainty in time of perihelion is 3-sigma.)
  6. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 3 December 2018.
  7. ^ "LCDB Data for (501546)". Asteroid Lightcurve Database (LCDB). Retrieved 3 December 2018.
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