2020 HA10

2020 HA₁₀ is a near-Earth object of the Atira group. It was discovered at G=20.4 mag on 2020 April 28 by the Mount Lemmon Survey using the 0.5 m reflector + 10 K CCD.^[3]

2020 HA₁₀

Discovery[1]
Discovered by	Mount Lemmon Survey
Discovery site	Mount Lemmon Obs.
Discovery date	28 April 2020 (first observed only)
Designations
MPC designation	2020 HA10
Minor planet category	NEO · Atira[1]
Orbital characteristics[2]
Epoch 30 April 2020 (JD 2458969.5)
Uncertainty parameter 8
Observation arc	5 days
Aphelion	0.9471 AU
Perihelion	0.6937 AU
Semi-major axis	0.8204 AU
Eccentricity	0.1544
Orbital period (sidereal)	0.74 yr (271.4 d)
Mean anomaly	117.5°
Mean motion	1° 19m 33.6s / day
Inclination	49.66°
Longitude of ascending node	103.46°
Argument of perihelion	27.1°
Earth MOID	0.087 AU
Physical characteristics
Mean diameter	100–500 m (est. at 0.05–0.15)
Absolute magnitude (H)	19.1±0.8[2]

2020 HA₁₀ orbits the Sun at a distance of 0.7–0.9 AU once every 9 months (271 days; semi-major axis of 0.82 AU). Its orbit has an eccentricity of 0.15 and an unusually high inclination of 50° with respect to the ecliptic.^[2] The orbital evolution of 2020 HA₁₀ leads the object into the Aten orbital realm periodically.^[4]