(54509) YORP
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Asteroid (54509) YORP |
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| Radar image and 3D model | |
| Properties of the orbit ( animation ) | |
| Orbit type | Apollo type |
| Major semi-axis | 1.0060 AU |
| eccentricity | 0.2300 |
| Perihelion - aphelion | 0.7746 AU - 1.2374 AU |
| Inclination of the orbit plane | 1.5998 ° |
| Sidereal period | 368,218 d |
| Mean orbital velocity | 29.31 km / s |
| Physical Properties | |
| Medium diameter | 0.150 km |
| Absolute brightness | 22.7 mag |
| history | |
| Explorer | LINEAR |
| Date of discovery | August 3, 2003 |
| Another name | 2000 PH 5 |
| Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items. | |
(54509) YORP is a near-Earth asteroid that was discovered on August 3, 2000 by the team at the Lincoln Institute for the Study of Near-Earth Asteroids in Socorro . By measuring the rotation rate of this asteroid, the YORP effect could be observed and proven for the first time . It increases the asteroid's period of rotation by 2.0 (± 0.2) × 10⁻⁴ deg / day⁻². Simulations of the asteroid suggest that it will be in stable orbit around the sun for the next 35 million years . By then it will have reached a rotation period of around 20 seconds. The forces that occur at this extraordinarily high speed of rotation can then cause the asteroid to change shape or cause it to break. The simulations also ruled out that the increase in the rotation period could be explained by the proximity of the fly-bys to Earth.
See also
literature
- Michael Mueller: Surface properties of asteroid observations in the mid-infrared and thremophysical modeling . In: Doctoral Dissertation . 2007.
Individual evidence
- ↑ Patrick A. Taylor, et al. : Spin Rate of Asteroid (54509) 2000 PH5 Increasing Due to the YORP Effect . In: Science . 316, No. 5822, April 13, 2007, pp. 274-277. doi : 10.1126 / science.1139038 .
- ↑ The YORP Effect Detected on Near-Earth Asteroid 2000 PH5 . Retrieved January 14, 2015.
- ↑ Stephen C. Lowry, et al. : Direct Detection of the Asteroidal YORP Effect Archived from the original on October 14, 2012. In: Science . 316, No. 5822, April 13, 2007, pp. 272-274. bibcode : 2007Sci ... 316..272L . doi : 10.1126 / science.1139040 . PMID 17347414 .