2001 AV43
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 | 13.23 yr (4,834 d) |
Aphelion | 1.5929 |
Perihelion | 0.9744 |
1.2836 | |
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 |
Physical characteristics | |
Mean diameter | 0.03 km (derived)[3] |
0.1701 h (612 s)[3][4] | |
0.20 (assumed)[3] | |
S (assumed)[3] | |
24.6[1][2] 24.9[3] | |
2001 AV43 is a very small, monolithic asteroid and fast rotator, classified as a near-Earth object of the Apollo group, approximately 30 meters (98 feet) in diameter. It was first observed on 5 January 2001, by astronomers of the LINEAR program at Lincoln Laboratory's Experimental Test Site near Socorro, New Mexico, in the United States.[1] The presumed S-type asteroid has a rotation period of only 10 minutes.[3] It has an exceptionally low MOID of 0.66 lunar distance (LD) and will approach Earth at 0.81 LD on 11 November 2029.[2]
Orbit and classification[edit]
2001 AV43 is a member of the dynamical Apollo group,[2][1] which are Earth-crossing asteroids. Apollo asteroids are the largest subgroup of near-Earth objects. Unlike many Apollo asteroids, this asteroid is not a Mars-crosser, as its aphelion is smaller than the orbit of the Red Planet at 1.66
This asteroid orbits the Sun at a distance of 0.97–1.59
Close approaches[edit]
2001 AV43 has an Earth minimum orbital intersection distance of 0.0017
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 of 2001 AV43 is predicted to bring the asteroid within a nominal distance of 0.00209
Physical characteristics[edit]
2001 AV43 is an assumed stony S-type asteroid.[3]
Rotation period[edit]
A rotational lightcurve of 2001 AV43 was obtained from photometric observations by American astronomers Robert J. Whiteley, Carl Hergenrother and David Tholen. Lightcurve analysis gave a rotation period of 0.1701 hours (612 second) with a brightness amplitude of 0.26 magnitude (U=2).[3][4] With such a short period, it is a notable fast rotator. The observers classified it as a "monolithic fast-rotating asteroid" (MFRA).[4]
Diameter and albedo[edit]
The Collaborative 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]
Numbering and naming[edit]
As of 2018, this minor planet has neither been numbered nor named.[1]
References[edit]
- ^ a b c d e f g "2001 AV43". Minor Planet Center. Retrieved 2 November 2018.
- ^ a b c d e f g h i "JPL Small-Body Database Browser: (2001 AV43)" (2013-11-24 last obs.). Jet Propulsion Laboratory. Retrieved 2 November 2018.
- ^ a b c d e f g h i "LCDB Data for 2001 AV43". Asteroid Lightcurve Database (LCDB). Retrieved 24 January 2018.
- ^ a b c Whiteley, R. J.; Hergenrother, C. W.; Tholen, D. J. (November 2002). "Monolithic fast-rotating asteroids". Proceedings of Asteroids. 500: 473–480. Bibcode:2002ESASP.500..473W. Retrieved 24 January 2018.
- ^ Jim Borg (16 November 2013). "Asteroid to make 'close' pass to Earth on Monday". Star Advertiser.
External links[edit]
- Table of Asteroids Next Closest Approaches to the Earth, Sormano Astronomical Observatory
- Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Forthcoming Close Approaches To The Earth – Minor Planet Center
- 2001 AV43 at NeoDyS-2, Near Earth Objects—Dynamic Site
- 2001 AV43 at ESA–space situational awareness
- 2001 AV43 at the JPL Small-Body Database