2010 JL88

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

1. "2010 JL88 Impact Risk". Jet Propulsion Laboratory. National Aeronautics and Space Administration. 8 August 2013. Archived from the original on 28 May 2010. Retrieved 31 March 2016.
2. "2010 JL88". Minor Planet Center. Retrieved 20 September 2016.
3. "The Tracking News". hohmanntransfer.com. 18 May 2010. Retrieved 3 December 2013.
4. "JPL Small-Body Database Browser: 2010 JL88" (2010-05-17 last obs.). Jet Propulsion Laboratory. Retrieved 20 September 2016.
5. Blobrana (17 May 2010). "Asteroid 2010 JL88". Retrieved 3 December 2013.
6. "Conversion of Absolute Magnitude to Diameter for Minor Planets". Sephen F. Austin State University. Dan Burton. Archived from the original on 10 December 2008. Retrieved 26 November 2013.
7. "HEC: Exoplanets Calculator". Planetary Habitability Laboratory. University of Puerto Rico at Arecibo. Archived from the original on 24 August 2017. Retrieved 10 December 2014.
8. Ryan, Eileen V.; Ryan, W. H. (October 2010). "Rotation Rates of Very Small Near-Earth Asteroids". American Astronomical Society. 42: 1086. Bibcode:2010DPS....42.6003R. Retrieved 20 September 2016.
9. "Comets and Asteroids: (2010 JL88)". Find the Data. 11 November 2013. Retrieved 8 December 2013.
10. Hamilton, Douglas. "Solar System Collisions". Astronomy Workshop. Retrieved 8 December 2013.^{[permanent dead link‍]}

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
  • Ephemerides · Observation prediction · Orbital info · MOID · Proper elements · Observational info · Close approaches · Physical info · Orbit animation
• 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 viewer · Orbit parameters · Physical parameters