Astronomy:2010 FX86
| Discovery[1] | |
|---|---|
| Discovered by | S. S. Sheppard, A. Udalski, I. Soszynski |
| Discovery site | Las Campanas Observatory, Chile |
| Discovery date | 17 March 2010 |
| Designations | |
| 2010 FX86 | |
| Minor planet category | TNO[2] distant[3] |
| Orbital characteristics[2] | |
| Epoch 27 April 2019 (JD 2458600.5) | |
| Uncertainty parameter 3 | |
| Observation arc | 2634 days (7.21 yr) |
| |{{{apsis}}}|helion}} | 50.161 astronomical unit|AU (7.5040 Tm) |
| |{{{apsis}}}|helion}} | 44.109 AU (6.5986 Tm) |
| 47.135 AU (7.0513 Tm) | |
| Eccentricity | 0.064199 |
| Orbital period | 323.61 yr (118199 d) |
| Mean anomaly | 295.094° |
| Mean motion | 0° 0m 10.965s /day |
| Inclination | 25.1697° |
| Longitude of ascending node | 311.074° |
| |{{{apsis}}}|helion}} | ≈ 25 February 2084[4] ±44 days |
| 347.887° | |
| Known satellites | 0 |
| Earth MOID | 43.0966 AU (6.44716 Tm) |
| Jupiter MOID | 39.0007 AU (5.83442 Tm) |
| Physical characteristics | |
| Mean diameter | 305–682 km[2][3][5][lower-alpha 1] 549 km[6][lower-alpha 2] |
| Rotation period | 15.80 h (0.658 d)[2][lower-alpha 3] |
| Geometric albedo | 0.09 (assumed)[6] |
| Absolute magnitude (H) | 4.7[2][3] 4.6[6] |
2010 FX86 is a relatively bright trans-Neptunian object[2] with an absolute magnitude of about 4.65.[2][3][6]
It was first discovered on 17 March 2010, at Las Campanas Observatory in Chile, by S. S. Sheppard, A. Udalski and I. Soszynski. No earlier precovery images for it have been found. It is estimated to be about 520 kilometres (320 mi) in diameter,[6] with a rotation period of approximately 15.80 hours,[2] but as of yet no detailed photometry has been taken to properly determine colour or albedo, or to better confirm its rotational lightcurve.
2010 FX86 has not yet been imaged by high-resolution telescopes, so it has no known moons. The Hubble Space Telescope is planned to image it in 2026, which should determine if it has significantly sized moons.[7]
Notes
References
- ↑ "MPEC 2010-G57 : 2010 FX86". Minorplanetcenter.org. http://www.minorplanetcenter.org/mpec/K10/K10G57.html.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 Alan Chamberlin. "JPL Small-Body Database Browser". Ssd.jpl.nasa.gov. http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2010FX86.
- ↑ 3.0 3.1 3.2 3.3 "IAU Minor Planet Center". Minorplanetcenter.net. 2018-03-23. http://www.minorplanetcenter.net/db_search/show_object?object_id=2010+FX86.
- ↑ JPL Horizons Observer Location: @sun (Perihelion occurs when deldot changes from negative to positive. Uncertainty in time of perihelion is 3-sigma.)
- ↑ "Conversion of Absolute Magnitude to Diameter for Minor Planets". http://www.physics.sfasu.edu/astro/asteroids/sizemagnitude.html.
- ↑ 6.0 6.1 6.2 6.3 6.4 Michael E. Brown. "How many dwarf planets are there in the outer solar system? (updates daily)". California Institute of Technology. http://web.gps.caltech.edu/~mbrown/dps.html.
- ↑ Proudfoot, Benjamin (August 2025). "A Search For The Moons of Mid-Sized TNOs". Mikulski Archive for Space Telescopes (Space Telescope Science Institute): HST Proposal 18010. Cycle 33. https://www.stsci.edu/hst-program-info/download/hst/pdf/18010/. Retrieved 2025-08-17.
External links
- 2010 FX86 at the JPL Small-Body Database
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