2019 MO
2019 MO, temporarily designated A10eoM1, was a small, harmless 3-meter near-Earth asteroid discovered by ATLAS–MLO that impacted Earth's atmosphere on 22 June 2019 at 21:25 UT. The impact of the bolide generated a 5-kiloton-equivalent explosion off the south coast of Puerto Rico which was detected by infrasound detectors. The strewn field would be spread over the Caribbean Sea.
Orbital diagram of 2019 MO on 22 June 2019 | |
| Discovery | |
|---|---|
| Discovered by | ATLAS–MLO (T08) |
| Discovery site | Mauna Loa Obs. |
| Discovery date | 22 June 2019 |
| Designations | |
MPC designation | 2019 MO |
Alternative designations | NEOCP A10eoM1 |
Minor planet category | NEO · Apollo Alinda |
| Orbital characteristics | |
| Epoch 22 June 2019 (JD 2458656.5) | |
| Uncertainty parameter 9 · 7 | |
| Observation arc | 2.3 h (approx.) |
| Aphelion | 4.0116 AU |
| Perihelion | 0.9384 AU |
Semi-major axis | 2.4750 AU |
| Eccentricity | 0.6208 |
Orbital period (sidereal) | 3.89 yr (1,422 d) |
Mean anomaly | 352.63° |
Mean motion | 0° 15m 11.16s / day |
| Inclination | 1.5471° |
Longitude of ascending node | 91.040° |
| 2019-Jul-21 | |
| 216.76° | |
| Earth MOID | 4.54412×10−7 AU (67.9791 km) |
| Physical characteristics | |
Mean diameter | 3 m |
| 29.3 | |
The Apollo asteroid was inbound approaching a late July perihelion (closest approach to the Sun) when it impacted Earth at 16.1 km/s.
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