The two craters are believed to have formed nearly simultaneously by the impact of a binary asteroid.

The binary asteroid 1509 Esclangona is named after him.

Its elongation led to the suggestion that Eunomia may be a binary asteroid object.

Since then numerous binary asteroids have been detected.

This data suggests that the asteroid may have a complex shape or it could be a binary asteroid system.

It was the first binary asteroid to be found and is a member of the Koronis family of asteroids.

An occultation on 2007 November 12 suggested that Inanda could be a binary asteroid.

Another difference between the low inclination (cold) and high inclination (hot) classical objects is the observed number of binary asteroid.

On 6 and 7 July 2008, research conducted using the Arecibo Observatory produced evidence that this is a binary asteroid.

A binary asteroid is a system of two asteroids orbiting their common center of mass, in analogy with binary stars.

Gingerich is also suspected to be a binary asteroid, due to a decrease in the magnitude of its lightcurve observed on Nov. 20, 2005.

Geoffrey Landis has pointed out that the capture could have occurred if the original body was a binary asteroid that separated under tidal forces.

Paired impact craters, such as the Clearwater Lakes in Canada, may have been formed by binary asteroids.

Asteroid Hat Trick Not so long ago, astronomers were unsure that binary asteroids - two rocks rotating about each other - existed.

In his time at Space Telescope, Griffin contributed to the observation and study of a scientifically significant binary asteroid system, known as 1998 WW31.

On 7 May 2009 it was announced that 6708 Bobbievaile was determined to be a binary asteroid based on a series of lightcurve observations.

Two of his discoveries are now known to have unusual properties: the binary asteroid with equal components 90 Antiope and the extremely slow-rotating 288 Glauke.

Radar and speckle interferometry observations show that the shape of Victoria is elongated, and it is suspected to be a binary asteroid.

The Pegasus encounters a binary asteroid from much closer than expected, and dubs the rocks "Hubris" and "Catastrophe" as a result.

The shape of the curve has a similar appearance to the light curve of binary star Algol, suggesting that this may be a binary asteroid system.

When both binary asteroids are similar in size, they are sometimes called "binary companions", "double asteroids" or "doublet asteroids".

Binary Asteroids in the Near-Earth Object Population, Margot et al., Science, 2002 (subscription)

Such binary asteroids are not unknown, but the researchers say that Hermes is unusual in that the rocks are roughly the same size - about a quarter-mile in diameter.

Petr Pravec (born September 17, 1967) is a Czech astronomer, born in Třinec, a prolific discoverer of binary asteroids using lightcurve photometric studies.

This is one mechanism through which binary asteroids may form, and it may be more common than collisions and planetary near-encounter tidal disruption as the primary means of binary formation.