2018 SM - Asteroid approaching the Earth. It belongs to the Apollo group.
| 2018 SM | |
|---|---|
| Asteroid | |
| Opening | |
| Category | NEA ( Apollo ) |
| Orbital characteristics | |
| Age of March 23, 2018 JD 2458200.5 | |
| Eccentricity ( e ) | 0.5304419681759639 |
| Semi-axis ( a ) | 304.643 million km (2.036411405055905 a.u.) |
| Perihelion ( q ) | 143.047 million km (0.95621333134207 a.u.) |
| Afhelia ( Q ) | 466.238 million km (3.1166094787697 A.E.) |
| Circulation Period ( P ) | 1,061,443 days (2,906 g ) |
| Average orbital speed | 19.309 km / s |
| Inclination ( i ) | 6.62353499870779 Β° |
| Ascending node longitude (Ξ©) | 172.9395332352925 Β° |
| Perihelion Argument (Ο) | 149.0377985740289 Β° |
| Median Anomaly ( M ) | 308.2790506908273 Β° |
| physical characteristics | |
| Diameter | 0.004 - 0.008 km |
| Apparent magnitude | 34.94 m (current) |
| Absolute magnitude | 29,392 m |
| Current distance from the sun | 2,841 a. e. |
| Current distance from Earth | 3,829 a. e. |
The approach to the Earth took place on September 15, 2018 at 22:29 UTC, the distance is 42 thousand km (0.11 distances to the Moon), the relative speed is 11.083 km / s (39 899 km / h).
The asteroid was discovered on September 16, 2018, that is, the day after the rapprochement.
Content
Convergence
| date | but. e. | distances to the moon | heavenly body |
|---|---|---|---|
| 09/15/2018 13:44 | 0,001876 | 0.731 | Moon |
| 09/15/2018 10:29 PM | 0,000285 | 0,111 | Land |
Notes
Links
See also
- List of asteroids crossing the Earth's orbit