 2019 OK orbits near the ecliptic plane out to the asteroid belt and inside the orbit of Venus | |
| Discovery [1] | |
|---|---|
| Discovered by | SONEAR Obs. |
| Discovery site | SONEAR Obs. (Y00) |
| Discovery date | 24 July 2019 |
| Designations | |
| 2019 OK | |
| NEOCP S511618[2] | |
| Apollo · NEO | |
| Orbital characteristics [3] | |
| Epoch 27 April 2019 (JD 2458600.5) | |
| Uncertainty parameter 1 | |
| Observation arc | 2.42 years |
| Earliest precovery date | 2017-02-21 (Pan-STARRS) |
| Aphelion | 3.4315 AU |
| Perihelion | 0.4635 AU |
| 1.9475 AU | |
| Eccentricity | 0.7620 |
| 2.72 yr (993 d) | |
| 310.58° | |
| 0° 21m 45.36s / day | |
| Inclination | 1.4006° |
| 302.27° | |
| 104.24° | |
| Earth MOID | 0.00036 AU (54,000 km) (0.14 LD) |
| Physical characteristics | |
| 57–130 m (187–426 ft) | |
| 23.3±0.3[3] 23.3[1] | |
2019 OK[a] is a near-Earth asteroid noted for its sudden, surprise discovery on the day before it flew by at approximately 70,000 km (43,000 mi) in 2019.[4] The object's size is estimated at 57 to 130 metres (187 to 426 ft) across, the closest asteroid of such size discovered in 2019.[5] It is uncommon for asteroids of this moderately large size to pass within 100,000 km (62,000 mi) of Earth.
- ^ a b Cite error: The named reference
MPC-objectwas invoked but never defined (see the help page). - ^ Cite error: The named reference
Graywas invoked but never defined (see the help page). - ^ a b Cite error: The named reference
jpldatawas invoked but never defined (see the help page). - ^ Vergano, Dan; Leopold, Jason (19 September 2019). "A "Sneaky" Asteroid Narrowly Missed Earth This Summer. Internal Emails Show How NASA Scientists Totally Missed It. - "This one did sneak up on us," one NASA expert wrote in an internal email, two days after the football-field-sized asteroid narrowly missed the planet". BuzzFeed News. Retrieved 20 September 2019.
- ^ Mannix, Liam. "Earth had a near-miss with a 'city-killer' asteroid". stuff.co.nz. Retrieved 26 July 2019.
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