| Discovery[1] | |
|---|---|
| Discovered by | Mount Lemmon Srvy. |
| Discovery date | 2 June 2014 |
| Designations | |
| 2014 LY21 | |
| Orbital characteristics[2] | |
| Epoch 2 June 2014 (JD 2456810.5) | |
| Uncertainty parameter 9[2] | |
| Observation arc | ~1 hour[3][a] |
| Aphelion | 1.0306 AU (154.18 Gm) (Q) |
| Perihelion | 0.35603 AU (53.261 Gm) (q) |
| 0.69330 AU (103.716 Gm) (a) | |
| Eccentricity | 0.48647 (e) |
| 0.58 yr (210.9 d) | |
| 203.00° (M) | |
| 1.7074°/day (n) | |
| Inclination | 0.80341° (i) |
| 73.788° (Ω) | |
| 348.77° (ω) | |
| Earth MOID | 0.000140028 AU (20,947.9 km) |
| Jupiter MOID | 4.29318 AU (642.251 Gm) |
| Physical characteristics | |
| Dimensions | 4–8 m (13–26 ft)[4] |
| 29.1[2] | |
2014 LY21 is a near-Earth asteroid of the Aten group, approximately 4–8 meters (13–26 feet) in diameter. On 3 June 2014 around 17:38 UT (± 3 hours), it is crudely estimated to have passed about 0.00013 AU (19,000 km) from Earth.[2][b] The asteroid was discovered on 2 June 2014 by the Mount Lemmon Survey at an apparent magnitude of 21 using a 1.5-meter (59 in) reflecting telescope.[1]
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