astro.wikisort.org - Asteroid

2010 JL₈₈ is an unnumbered asteroid, classified as a near-Earth object of the Apollo group, approximately 19 meters in diameter.[2] It was first observed by the Siding Spring Survey, Australia, on 15 May 2010. It is known to be the fastest rotator with an unambiguous period solution, having an exceptionally rapid rotation period of less than 25 seconds.[4][8]

2010 JL₈₈

Orbit of 2010 JL88
Discovery[1][2][3]
Discovery site	Siding Spring Survey (unaccredited)
Discovery date	15 May 2010
Designations
MPC designation	2010 JL88
Minor planet category	Apollo · NEO[4]
Orbital characteristics[4]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 7
Aphelion	2.1391 AU
Perihelion	0.70654 AU
Semi-major axis	1.4228 AU
Eccentricity	0.50343
Orbital period (sidereal)	1.70 yr (619.91 d)
Mean anomaly	89.113°
Mean motion	0° 34m 50.628s /day
Inclination	0.092387°
Longitude of ascending node	269.02°
Argument of perihelion	51.167°
Earth MOID	0.000956 AU
Physical characteristics
Dimensions	18.5±7.5 m[5]
Synodic rotation period	24.5 s (0.0068295 h)[4]
Geometric albedo	0.1[6]
Temperature	186–323 K[7]
Absolute magnitude (H)	26.8[4]

On May 17, 2010, it passed 0.00257 AU (384,000 km) from Earth.[4] It is on the lower of the Sentry Risk Table.[1]

Earth impact possibility

2010 JL₈₈ has an Earth minimum orbit intersection distance of 0.45 Lunar Distances[9] However, it only has a 1 in 1,449,000 (0.000069%) chance of impacting into Earth sometime after 2049.[1] Even if it did impact, 2010 JL₈₈ is so small that it would simply disintegrate in a manner similar to the Chelyabinsk meteor.[10]

Rotation

The asteroid was found to have a rapid rotation by the Magdalena Ridge Observatory's 2.4-meter telescope. It rotates at an extremely rapid rate of 24.5 seconds. 2010 JL₈₈ is the second fastest natural rotating object discovered in the Solar System,[8] after 2014 RC, which has a period of 16 seconds but still an uncertain period solution.

See also

List of exceptional asteroids List of fast rotators (minor planets)

References

External links

• Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
• 2010 JL88 at NeoDyS-2, Near Earth Objects—Dynamic Site
  • Ephemeris · Obs prediction · Orbital info · MOID · Proper elements · Obs info · Close · Physical info · NEOCC
• 2010 JL88 at ESA–space situational awareness
  • Ephemerides · Observations · Orbit · Physical Properties · Summary
• 2010 JL88 at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

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