367943 Duende
|
|
| Discovery | |
|---|---|
| Discovered by |
OAM Observatory, La Sagra (J75) 0.45-m Reflector |
| Discovery date | 23 February 2012 |
| Designations | |
| MPC designation | 2012 DA14 |
| Post 2013-Feb-15: Aten Pre-2013: Apollo NEO |
|
| Orbital characteristics | |
|
Epoch 13 January 2016 (JD 2457400.5) (Uncertainty=0) |
|
| Uncertainty parameter 0 | |
| Aphelion | 0.99175 AU (148.364 Gm) |
| Perihelion | 0.82892 AU (124.005 Gm) |
| 0.91034 AU (136.185 Gm) | |
| Eccentricity | 0.089433 |
| 0.87 yr (317.2 d) | |
| 285.87° | |
| 1.1348°/day | |
| Inclination | 11.609° |
| 146.97° | |
| 195.60° | |
| Earth MOID | 0.000320578 AU (47,957.8 km) |
| Jupiter MOID | 4.12308 AU (616.804 Gm) |
| Physical characteristics | |
| Dimensions | ~45 meters (148 ft) 20 m × 40 m (66 ft × 131 ft) (elongated) geometric mean = 18 m |
| 9 hr | |
| 0.44 ± 0.20 | |
| L-type | |
| 7.2 (2013 peak) | |
| 24.0 25.29 HV; 24.5 HR 24.4 (2012 estimate) |
|
367943 Duende, also known by its provisional designation 2012 DA14, is an Aten near-Earth asteroid with an estimated diameter of 30 meters (98 ft). Before radar imaging, its estimated diameter was 45–50 meters. During its 15 February 2013 close passage, Duende passed 27,700 km (17,200 mi), or 4.3 Earth radii, from Earth's surface. This is a record close approach for a known object of this size. About 16 hours before the closest approach of Duende, an asteroid entered Earth's atmosphere above Russia, which was, however, unrelated to it because it had a completely different orbit.
Duende was discovered on February 23, 2012, by the Observatorio Astronómico de La Sagra, Granada Province in Spain (J75), operated remotely by amateur astronomers in Mallorca, seven days after passing 0.0174 AU (2,600,000 km; 1,620,000 mi) from Earth. It was named after the duende, fairy- or goblin-like mythological creatures from Iberian, Latin American and Filipino folklore.
Based on the still relatively imprecise orbit deduced from the short arc of the 2012 observations, it was already clear that Duende would pass no closer to Earth's surface than 3.2 Earth radii during its 2013 passage. There was, however, a cumulative risk of 0.033% (1 in 3,030) that Duende would impact Earth sometime between 2026 and 2069.
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