2005 NB56

2005 NB₅₆, also written as 2005 NB56, is a near-Earth object.^[1] This small body has been suggested as a possible source of the Tunguska event on June 30, 1908.^[2]

Controversial study

One study "suggests that a chunk of a comet caused the 5-10 megaton fireball, bouncing off the atmosphere and back into orbit around the sun."^[2]

This object made a close approach to Earth when it was discovered in 2005 and will do so again in 2045.^[3] This object has a poorly known orbit and was only observed over an observation arc of 17 days, not sufficient to predict its position in 1908 with sufficient accuracy.^[1]

References

1 2 "JPL Small-Body Database Browser: (2005 NB56)" (2005-07-28 last obs). Retrieved 2009-05-19.
1 2 When Comets Attack: Solving the Mystery of the Biggest Natural Explosion in Modern History, By Mark Anderson, Popular Mechanics
↑ "NEODyS: 2005NB56". Department of Mathematics, University of Pisa, ITALY. Retrieved 2009-05-19.

External links

Orbital simulation from JPL (Java) / Ephemeris
2005 NB56 at the JPL Small-Body Database
- Discovery · Orbit diagram · Orbital elements · Physical parameters

Small Solar System bodies

Minor planets

Designation Groups Moons Meanings of names Pronunciation of names

Asteroids	Aten asteroid Asteroid belt Families Jupiter Trojans Near-Earth Spectral types

Distant minor planets	Centaurs Damocloids Neptune trojans Trans-Neptunian objects Detached Kuiper belt Oort cloud Scattered disc

Comets

Meteoroids

Lists / categories

Asteroid groups and families
Asteroid moons
Binary asteroids
Minor planets

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