2001 YB5
| Designations | |
|---|---|
| Orbital characteristics | |
| Epoch 21 November 2025 (JD 2461000.5) | |
| Uncertainty parameter 7 | |
| Aphelion | 4.36243 AU (652.610 Gm) |
| Perihelion | 0.318856 AU (47.7002 Gm) |
| 2.340642 AU (350.1551 Gm) | |
| Eccentricity | 0.863774 |
| 3.58 yr (1308 d) | |
| 226.183° | |
| 0° 16m 30.842s / day | |
| Inclination | 5.55131° |
| 108.212° | |
| 115.487° | |
| Earth MOID | 0.0029099 AU (435,310 km) |
| Jupiter MOID | 0.698308 AU (104.4654 Gm) |
| Physical characteristics | |
| 2.5 h (0.10 d) | |
| 20.74 | |
2001 YB5 is a sub-kilometer B-type near-Earth asteroid that belongs to the Apollo group. It is also a potentially hazardous asteroid. The asteroid measures approximately 300 meters in diameter. It has a Minimum Orbit Intersection Distance (MOID) from the Earth of 0.0038 AU (570,000 km; 350,000 mi). Based on limited observations, the asteroid may have a rotation period of 2.5 hours.
It passed at a nominal distance of 0.0043767 AU (654,750 km; 406,840 mi) from the Moon and 0.0055633 AU (832,260 km; 517,140 mi) from Earth on 7 January 2002.
Discovery
The asteroid was small enough to only be discovered after a close flyby on 26 December 2001 by NASA's Near-Earth Asteroid Tracking program (NEAT).: 82
The asteroid came within 830,000 kilometres from Earth – approximately twice the distance to the Moon – on 7 January. Similarly close flybys from other 2001 YB5-sized asteroids happen about once per year, and one impacts Earth about once every 20,000 to 30,000 years.: 82
References
- 1 2 3 "JPL Small-Body Database Browser: (2001 YB5)". Jet Propulsion Laboratory. Retrieved 30 March 2016.
- ↑ Yang, B.; Zhu, J.; Gao, J.; Ma, J.; Zhou, X.; Wu, H.; Guan, M. (2 November 2003). "Photometry and Spectroscopy of the Potentially Hazardous Asteroid 2001 YB5and Near-Earth Asteroid 2001 TX16". The Astronomical Journal. 126 (2): 1086–1089. doi:10.1086/376839. ISSN 0004-6256.
- ↑ "Large Asteroid Passes Close to Earth". neat.jpl.nasa.gov. Archived from the original on 18 November 2016. Retrieved 27 January 2016.
- ↑ Huge Asteroid Narrowly Misses Earth
- 1 2 Becker, Luann (March 2002). "Repeated Blows". Scientific American. 286 (3): 76–83. doi:10.1038/scientificamerican0302-76. ISSN 0036-8733.
External links
- 2001 YB5 at NeoDyS-2, Near Earth Objects—Dynamic Site
- 2001 YB5 at ESA–space situational awareness
- 2001 YB5 at the JPL Small-Body Database
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