Astronomy:2010 FX86

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2010 FX86
Discovery[1]
Discovered byObservers S. S. Sheppard, A. Udalski, I. Soszynski
Discovery siteLas Campanas Observatory, Chile
Discovery date17 March 2010
Designations
2010 FX86
Minor planet categoryTNO[2]
distant[3]
Orbital characteristics[2]
Epoch 27 April 2019 (JD 2458600.5)
Uncertainty parameter 3
Observation arc2634 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)
Eccentricity0.064199
Orbital period323.61 yr (118199 d)
Mean anomaly295.094°
Mean motion0° 0m 10.965s /day
Inclination25.1697°
Longitude of ascending node311.074°
|{{{apsis}}}|helion}}≈ 25 February 2084[4]
±44 days
347.887°
Earth MOID43.0966 AU (6.44716 Tm)
Jupiter MOID39.0007 AU (5.83442 Tm)
Physical characteristics
Mean diameter305–682 km[2][3][5][lower-alpha 1]
549 km[6][lower-alpha 2]
Rotation period15.80 h (0.658 d)[2][lower-alpha 3]
Geometric albedo0.09 (assumed)[6]
Absolute magnitude (H)4.7[2][3]
4.6[6]


2010 FX86, also written 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 yet no detailed photometry has been taken to properly determine colour or albedo, or to better confirm its rotational lightcurve.

Notes

  1. ↑ Using 4.6 mag, Bruton formula, and typical estimated albedo for minor planets of 0.25 to 0.05; mean is 493.5 km
  2. ↑ estimated
  3. ↑ "Result based on less than full coverage, so that the period may be wrong by 30 percent or so."

References

  1. ↑ "MPEC 2010-G57 : 2010 FX86". Minorplanetcenter.org. http://www.minorplanetcenter.org/mpec/K10/K10G57.html. 
  2. ↑ 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. ↑ 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. 
  4. ↑ JPL Horizons Observer Location: @sun (Perihelion occurs when deldot changes from negative to positive. Uncertainty in time of perihelion is 3-sigma.)
  5. ↑ "Conversion of Absolute Magnitude to Diameter for Minor Planets". http://www.physics.sfasu.edu/astro/asteroids/sizemagnitude.html. 
  6. ↑ 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. 

External links




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