| Minorplanet: | yes |
| Background: |
|
| Discovered: | 9 August 1994 |
| Mpc Name: | (7482) |
| Epoch: | 2022-Jan-21 (JD 2459600.5) |
| Uncertainty: | 0 |
| Observation Arc: | 47.23 yr (17,251 days) |
| Earliest Precovery Date: | 22 September 1974 |
| Perihelion: | 0.9042 AU |
| Semimajor: | 1.3488 AU |
| Eccentricity: | 0.3297 |
| Period: | 1.56 yr (572 days) |
| Mean Motion: | / day |
| Inclination: | 33.479° |
| Asc Node: | 117.88° |
| Arg Peri: | 47.477° |
| Moid: | 0.00054AU |
| Mars Moid: | 0.139AU |
| Mean Diameter: | km 1.30 km |
| Albedo: | 0.20 |
| Abs Magnitude: | 16.6 |
is a stony asteroid and near-Earth object, currently estimated to be the most potentially hazardous asteroid over the next 1000 years.[1] [2] It is in the Apollo group, approximately 1.1 kilometers in diameter. It was discovered on 9 August 1994, by astronomer Robert McNaught at the Siding Spring Observatory in Coonabarabran, Australia. With an observation arc of 47 years it has a very well known orbit and was observed by Goldstone radar in January 1997.
Of all the known asteroids larger than 1 km, has the largest probability of a “deep close encounter” with us over the next 1000 years. It has a close encounter with Earth in 2525, after which the uncertainty of its orbit increases.
orbits the Sun at a distance of 0.9–1.8 AU once every 1 years and 7 months (572 days). Its orbit has an eccentricity of 0.33 and an inclination of 33° with respect to the ecliptic.
On 17 January 1933, it passed 811350abbr=onNaNabbr=on from the Moon and then about an hour later made its closest known approach to Earth of 1125400abbr=onNaNabbr=on. On 18 January 2022, it passed about 1981468abbr=onNaNabbr=on from Earth.
| 1933-01-17 | ± 65 km | ||
| 2022-01-18 | ± 47 km | ||
| 2105-01-18 | ± 1069 km |
In the SMASS classification, is a common stony S-type asteroid.
In 1998, a rotational lightcurve of was obtained from photometric observations by Petr Pravec. Lightcurve analysis gave a well-defined rotation period of 2.5999 hours with a brightness amplitude of 0.29 magnitude .
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, measures 1.052 kilometers in diameter and its surface has an albedo of 0.277. The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.20 and calculates a diameter of 1.30 kilometers based on an absolute magnitude of 16.8.
At 18 January 2022 21:51 UTC, passed 5.15 lunar distances from Earth and had a 3-sigma uncertainty region of less than ± 50 km. It peaked at an apparent magnitude of about 10 placing it just outside the reach of common 7×50 binoculars. The nearly Full moon being about 100 degrees from the asteroid during closest approach may have made it more difficult to observe with smaller telescopes.
| 2022-01-18 18:58 | Moon | ||
| 2022-01-18 21:51 | Earth |
As of 2022, this minor planet has not been named.