Astronomy:2001 YB5
| Designations | |
|---|---|
| Minor planet category | |
| Orbital characteristics[1] | |
| Epoch 21 November 2025 (JD 2461000.5) | |
| Uncertainty parameter 7 | |
| |{{{apsis}}}|helion}} | 4.36243 astronomical unit|AU (652.610 Gm) |
| |{{{apsis}}}|helion}} | 0.318856 AU (47.7002 Gm) |
| 2.340642 AU (350.1551 Gm) | |
| Eccentricity | 0.863774 |
| Orbital period | 3.58 yr (1308 d) |
| Mean anomaly | 226.183° |
| Mean motion | 0° 16m 30.842s / day |
| Inclination | 5.55131° |
| Longitude of ascending node | 108.212° |
| 115.487° | |
| Earth MOID | 0.0029099 AU (435,310 km) |
| Jupiter MOID | 0.698308 AU (104.4654 Gm) |
| Physical characteristics | |
| Rotation period | 2.5 h (0.10 d) |
| Absolute magnitude (H) | 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.[1][2]
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.[1]
Discovery
The asteroid was small enough to only be discovered after a close flyby later than year on the 26th of December 2002 by NASA's Near-Earth Asteroid Tracking program (NEAT).[3][4][5]
The nearest proximity it has reached Earth by was 830,000 kilometres which is approximately twice the distance to the Moon.[5] The findings of David Morrison of the NASA Ames Research Center claim that although a object the size of 2001 YB5 in space commonly fly and orbit the Earth's proximity at such close distances annually, there are no indications of a collision on Earth as their predicted impact spans from about once every 20,000 to 30,000 years.[5]
References
- ↑ 1.0 1.1 1.2 "JPL Small-Body Database Browser: (2001 YB5)". Jet Propulsion Laboratory. http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001%20YB5.
- ↑ Yang, B.; Zhu, J.; Gao, J.; Ma, J.; Zhou, X.; Wu, H.; Guan, M. (2003-11-02). "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. https://iopscience.iop.org/article/10.1086/376839.
- ↑ "Large Asteroid Passes Close to Earth". http://neat.jpl.nasa.gov/2001YB5.htm.
- ↑ Huge Asteroid Narrowly Misses Earth
- ↑ 5.0 5.1 5.2 "Repeated Blows: Rough Neighbourhoods". Luann Becker. http://www.nature.com/scientificamerican/journal/v286/n3/pdf/scientificamerican0302-76.pdf.
External links
- 2001 YB5 at NeoDyS-2, Near Earth Objects—Dynamic Site
- Ephemeris · Obs prediction · Orbital info · MOID · Proper elements · Obs info · Close · Physical info · NEOCC
- 2001 YB5 at ESA–space situational awareness
- 2001 YB5 at the JPL Small-Body Database
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