Astronomy:2010 LH15

(2010 LH₁₅)

Discovery
Discovered by	WISE Catalina Sky Survey
Discovery date	3–9 June 2010 28 October 2010
Designations
Alternative designations	2010 TJ175
Minor planet category	Active asteroid Outer main-belt
Orbital characteristics
Epoch 21 November 2025 (JD 2461000.5)
Uncertainty parameter 0
Observation arc	21.58 years
Earliest precovery date	16 October 2001
|{{{apsis}}}|helion}}	3.719 AU
|{{{apsis}}}|helion}}	1.765 AU
Semi-major axis	2.742 AU
Eccentricity	0.35636
Orbital period	4.539 years
Mean anomaly	131.10°
Inclination	10.897°
Longitude of ascending node	53.625°
|{{{apsis}}}|helion}}	290.46°
Earth MOID	0.792 AU
Jupiter MOID	1.842 AU
Physical characteristics
Mean radius	0.5±0.1 km
Sidereal rotation period	2 hours
Geometric albedo	0.243
Spectral type	(g–r) = 0.44±0.07
Absolute magnitude (H)	17.36

2010 LH₁₅ is an unnamed active asteroid located in the outer main asteroid belt. It was first discovered by the Wide-field Infrared Survey Explorer satellite between 3 and 9 June 2010, and later on October 2010 by the Catalina Sky Survey, the latter of which mistakenly identified it as a separate object named 2010 TJ₁₇₅. In 2023, Colin O. Chandler later reported that cometary activity was detected from DECam imagery taken in September 2019, likely caused by sublimation of material from its surface.

External links

• 2010 LH₁₅ at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters
• 2010 LH₁₅ at Seiichi Yoshida's website