(501647) 2014 SD224

(501647) 2014 SD₂₂₄
	Collage of radar images taken by Goldstone on 26 December 2020
Discovery
Discovered by	Pan-STARRS
Discovery date	22 September 2014
Designations
MPC designation	(501647) 2014 SD224
Minor planet category	Aten; NEO;
Orbital characteristics
	Epoch 2020-May-31 (JD 2459000.5)
	Uncertainty parameter 1
Observation arc	6.3 years
Aphelion	1.3015 AU
Perihelion	0.65406
Semi-major axis	0.97779 AU
Eccentricity	0.33107
Orbital period (sidereal)	353.15 days (0.97 years)
Mean anomaly	75.398°
Inclination	4.5484°
Longitude of ascending node	286.44°
Argument of perihelion	277.11°
Earth MOID	0.017 AU (2.5 million km)
Venus MOID	0.024 AU (3.6 million km)
Jupiter MOID	3.66 AU (548 million km)
Physical characteristics
Mean diameter	92–210 meters (CNEOS); ~150 m (490 ft)
Absolute magnitude (H)	22.3

(501647) 2014 SD₂₂₄ is an Aten near-Earth asteroid around 150 meters (490 feet) in diameter. It was discovered on 22 September 2014 when the asteroid was 0.29 AU (43 million km; 110 LD) from Earth and had a solar elongation of 123 degrees. The glare of the Sun had masked the approach of the asteroid as it passed closest approach to Earth on 11 August 2014.^[2]^[a] The asteroid now has a 6-year observation arc and a well-determined orbit. It also makes close approaches to Venus.

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