2019 OU1
Near-Earth asteroid
From Wikipedia, the free encyclopedia
2019 OU1[a] is a sub-kilometre asteroid, classified as a near-Earth object of the Apollo group.[1][2] On 28 August 2019, the object safely passed 1.028 million kilometres from Earth,[3] travelling at around 13 km/s (47,000 km/h).[2]
| Discovery[1] | |
|---|---|
| Discovered by | Pan-STARRS 1 |
| Discovery site | Haleakala Obs. |
| Discovery date | 25 July 2019 (first observed) |
| Designations | |
| 2019 OU1 | |
| Apollo · NEO[1][2] | |
| Orbital characteristics[1][2] | |
| Epoch 27 April 2019 (JD 2458600.5) | |
| Uncertainty parameter 6[2] · 7[1] | |
| Aphelion | 3.673 au |
| Perihelion | 0.5748 au |
| 2.2679 au | |
| Eccentricity | 0.61977 |
| 3.42 years | |
| 313.73° | |
| 0° 17m 18.916s / day | |
| Inclination | 2.2176° |
| 145.143° | |
| 241.08° | |
| Earth MOID | 0.0062 au (2.4 LD) |
| Jupiter MOID | 1.79 au |
| Physical characteristics | |
| 71 m[3] (est. at 0.25)[4] 160 m[5] (est. at 0.05)[4] | |
| 22.87[2] | |
Observation
2019 OU1 was first observed on 25 July 2019 by Pan-STARRS 1 at Haleakala Observatory, Hawaii, United States.[1]
Orbit and classification
2019 OU1 is classified as an Apollo asteroid, which means that it is an Earth-crossing asteroid that has an orbital semi-major axis greater than 1 au but a perihelion distance less than Earth's aphelion distance of 1.017 au.[6]
Close approach in 2019
On 28 August 2019, 2019 OU1 safely passed 0.00687 astronomical units (1.028 million kilometres; 2.67 lunar distances) from Earth,[3] travelling at around 13 km/s (47,000 km/h).[2]
Physical characteristics
See also
Notes
- The name 2019 OU1 is its provisional designation which is based on the date it was discovered: 2019 for the year, "O" for half-month of 16–31 July, and "U1" for the 21st discovery in the 1st reiteration of the alphabet (excluding "I"), making it the 45th object discovered in the second half of July 2019.