(501647) 2014 SD224
(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. The asteroid now has a 6-year observation arc and a well-determined orbit. It also makes close approaches to Venus.
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 |
|
| 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° |
| 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) |
| 22.3 | |
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