| Discovery[1] | |
|---|---|
| Discovered by | LINEAR |
| Discovery site | Lincoln Laboratory ETS |
| Discovery date | 5 January 2001 |
| Designations | |
| 2001 AV43 | |
| NEO · Apollo[1][2] | |
| Orbital characteristics[2] | |
| Epoch 27 April 2019 (JD 2458600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 13.23yr (4,834 d) |
| Aphelion | 1.5929AU |
| Perihelion | 0.9744 AU |
| 1.2836 AU | |
| Eccentricity | 0.2409 |
| 1.45 yr (531 d) | |
| 256.05° | |
| 0° 40m 39.72s / day | |
| Inclination | 0.2013° |
| 20.505° | |
| 51.311° | |
| Earth MOID | 0.0017 AU · 0.66LD |
| Physical characteristics | |
| 0.03 km(derived)[3] | |
| 0.1701 h(612s)[3][4] | |
| 0.20(assumed)[3] | |
| S(assumed)[3] | |
| 24.6[1][2] 24.9[3] | |
2001 AV43 is a very small, monolithicasteroid andfast rotator, classified as anear-Earth object of theApollo group, approximately 30 meters (98 feet) in diameter. It was first observed on 5 January 2001, by astronomers of theLINEAR program atLincoln Laboratory's Experimental Test Site near Socorro, New Mexico, in the United States.[1] The presumedS-type asteroid has arotation period of only 10 minutes.[3] It has an exceptionally lowMOID of 0.66lunar distance (LD) and will approach Earth at 0.81 LD on 11 November 2029.[2]
2001 AV43 is a member of the dynamicalApollo group,[2][1] which areEarth-crossing asteroids. Apollo asteroids are the largest subgroup ofnear-Earth objects. Unlike many Apollo asteroids, this asteroid is not aMars-crosser, as itsaphelion is smaller than the orbit of the Red Planet at 1.66 AU.[2]
This asteroid orbits the Sun at a distance of 0.97–1.59 AU once every 17 months (531 days;semi-major axis of 1.28 AU). Its orbit has aneccentricity of 0.24 and aninclination of 0° with respect to theecliptic.[2] The body'sobservation arc begins with aprecovery found inESO'sAstrovirtel data archive (I03), in August 2000, less than 5 months prior to its official discovery observation at Socorro.[1]
2001 AV43 has anEarthminimum orbital intersection distance of 0.0017 AU (254,000 km), which translates into 0.7lunar distances (LD). Due to its small size, that is, anabsolute magnitude fainter than 22, this asteroid is not classified as apotentially hazardous asteroid.[2]
On 18 November 2013, the asteroid passed Earth at 2.7 LD. The angle of approach made it a good target for radar observations.[5]
On 11 November 2029, the orbit of2001 AV43 is predicted to bring the asteroid within a nominal distance of 0.00209 AU (313,000 km; 194,000 mi) or 0.81 LD of Earth. It will also pass theMoon at an even shorter nominal distance of 0.00166 AU (248,000 km; 154,000 mi)[2]
2001 AV43 is an assumed stonyS-type asteroid.[3]
A rotationallightcurve of2001 AV43 was obtained from photometric observations by American astronomersRobert J. Whiteley,Carl Hergenrother andDavid Tholen. Lightcurve analysis gave arotation period of 0.1701 hours (612 second) with a brightness amplitude of 0.26magnitude (U=2).[3][4] With such a short period, it is a notablefast rotator. The observers classified it as a "monolithic fast-rotating asteroid" (MFRA).[4]
TheCollaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and derives a diameter of 0.03 kilometers based on an absolute magnitude of 24.9.[3]
As of 2018, thisminor planet has neither been numbered nornamed.[1]
