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Discovery
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|---|---|
| Discovery date | January 10, 2010 |
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Designations
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| Alternate name(s) | none |
| Epoch 2455400.5 (2010-Jul-23.0) | |
| Aphelion | 1.3660 |
| Perihelion | 0.7243 AU |
| Semi-major axis | 1.0451 AU |
| Eccentricity | 0.3070 |
| Orbital period | 390.27 d |
| Average orbital speed | 28.5 |
| Mean anomaly | 114.020 |
| Inclination | 3.81 ° |
| Longitude of ascending node | 113.004 |
| Argument of perihelion | 97.062 |
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Physical characteristics
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| Dimensions | ~10 m |
| Rotation period | 0.1417 d |
| Spectral type | ? |
| Absolute magnitude (H) | 27.2 |
2010 AL30 is a near-Earth asteroid that was discovered on 10 January 2010.[1]
Italian scientists Ernesto Guido and Giovanni Sostero told RIA Novosti that it had an orbital period of almost exactly one year and might be a spent rocket booster.[2] However, it was determined that it is a near-Earth asteroid.[3]
On January 13, 2010 at 1246 UT it passed at about 122,000 km (76,000 mi), about 1/3 of the distance from the Earth to the Moon (or 0.33 LD). It is approximately 10–15 m (33–49 ft) wide.
If 2010 AL30 had entered the Earth's atmosphere, it would have created an air burst equivalent to between 50 kT and 100 kT (kilotons of TNT). The Nagasaki "Fat Man" atom bomb had a yield between 13-18kT.[4]
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