Astronomy:(501546) 2014 JJ80
| Discovery[1] | |
|---|---|
| Discovered by | Pan-STARRS 1 |
| Discovery site | Haleakalā Obs. |
| Discovery date | 9 July 2013 |
| Designations | |
| (501546) 2014 JJ80 | |
| 2014 JJ80 | |
| Minor planet category | TNO[2] · other[3] p-DP[4] · distant[1] |
| Orbital characteristics[2] | |
| Epoch 27 April 2019 (JD 2458600.5) | |
| Uncertainty parameter 2 | |
| Observation arc | 6.92 yr (2,526 d) |
| |{{{apsis}}}|helion}} | 55.066 AU |
| |{{{apsis}}}|helion}} | 31.297 AU |
| 43.182 AU | |
| Eccentricity | 0.2752 |
| Orbital period | 283.76 yr (103,645 d) |
| Mean anomaly | 342.32° |
| Mean motion | 0° 0m 12.6s / day |
| Inclination | 18.674° |
| Longitude of ascending node | 261.43° |
| |{{{apsis}}}|helion}} | ≈ 18 July 2033[5] |
| 97.702° | |
| Physical characteristics | |
| Mean diameter | 344 km (est.)[4] 352 km (est.)[3] |
| Geometric albedo | 0.08 (assumed)[4] 0.09 (assumed)[3] |
| Absolute magnitude (H) | 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
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
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
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
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 "501546 (2014 JJ80)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=501546. Retrieved 3 December 2018.
- ↑ 2.0 2.1 2.2 2.3 2.4 "JPL Small-Body Database Browser: 501546 (2014 JJ80)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2501546. Retrieved 3 December 2018.
- ↑ 3.0 3.1 3.2 3.3 Johnston, Wm. Robert (7 October 2018). "List of Known Trans-Neptunian Objects". Johnston's Archive. http://www.johnstonsarchive.net/astro/tnoslist.html. Retrieved 3 December 2018.
- ↑ 4.0 4.1 4.2 4.3 4.4 Brown, Michael E.. "How many dwarf planets are there in the outer solar system?". California Institute of Technology. http://web.gps.caltech.edu/~mbrown/dps.html. Retrieved 3 December 2018.
- ↑ JPL Horizons Observer Location: @sun (Perihelion occurs when deldot changes from negative to positive. Uncertainty in time of perihelion is 3-sigma.)
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html. Retrieved 3 December 2018.
- ↑ "LCDB Data for (501546)". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=501546%7C. Retrieved 3 December 2018.
External links
- MPEC 2016-O84 : 2014 JJ80, Minor Planet Electronic Circular, 17 July 2017
- M.P.E.C. statistics for F51 – All MPECs
- List of Transneptunian Objects, Minor Planet Center
- Discovery Circumstances: Numbered Minor Planets (500001)-(505000) – Minor Planet Center
- (501546) 2014 JJ80 at AstDyS-2, Asteroids—Dynamic Site
- (501546) 2014 JJ80 at the JPL Small-Body Database
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