(144898) 2004 VD17
Encyclopedia
(previously known by its provisional designation
) is a near-Earth asteroid once thought to have a low and not highly unusual probability of impacting
Earth in 2102. From February to May 2006 it was listed with a Torino Scale
impact risk value of 2, only the second asteroid in risk-monitoring history to be rated above value 1. The Torino rating was lowered to 1 after additional observations on May 20, 2006, and finally dropped to 0 on October 17, 2006.
As of the observation on December 17, 2006, JPL assigns a Torino value of 0 and an impact probability of 1 in 41.667 million in the next 100 years. This value is far below the background impact rate of objects this size.
was discovered on November 7, 2004, by the NASA-funded LINEAR
asteroid survey. The object is estimated by NASA's Near Earth Object Program Office to be 580 meters in diameter with an approximate mass of 2.6×1011 kg.
According to NEODyS
(which compiles data from the IAU's Minor Planet Center), the Palermo Scale
rating is currently −3.52 for the 2102 encounter, and −8.09 and −6.81 for encounters in 2103 and 2104 respectively. The ratings are based on 961 optical observations dating from February 16, 2002. JPL's Sentry System has returned similar results with a Palermo Scale
rating of −4.91 for the 2102 encounter, based on 908 optical observations also dating from February 16, 2002. This continues a trend of decreasing Palermo rating with continuing observations.
It will pass 0.02 AU from the Earth on May 1, 2032, allowing a refinement to the orbit.
Being ~580 meters in diameter, if were to impact land, it would produce a crater about 10 kilometres wide and an earthquake of magnitude 7.4.
Provisional designation in astronomy
Provisional designation in astronomy is the naming convention applied to astronomical objects immediately following their discovery. The provisional designation is usually superseded by a permanent designation once a reliable orbit has been calculated...
) is a near-Earth asteroid once thought to have a low and not highly unusual probability of impacting
Impact event
An impact event is the collision of a large meteorite, asteroid, comet, or other celestial object with the Earth or another planet. Throughout recorded history, hundreds of minor impact events have been reported, with some occurrences causing deaths, injuries, property damage or other significant...
Earth in 2102. From February to May 2006 it was listed with a Torino Scale
Torino Scale
The Torino Scale is a method for categorizing the impact hazard associated with near-Earth objects such as asteroids and comets.It is intended as a communication tool for astronomers and the public to assess the seriousness of collision predictions, by combining probability statistics and known...
impact risk value of 2, only the second asteroid in risk-monitoring history to be rated above value 1. The Torino rating was lowered to 1 after additional observations on May 20, 2006, and finally dropped to 0 on October 17, 2006.
As of the observation on December 17, 2006, JPL assigns a Torino value of 0 and an impact probability of 1 in 41.667 million in the next 100 years. This value is far below the background impact rate of objects this size.
was discovered on November 7, 2004, by the NASA-funded LINEAR
Lincoln Near-Earth Asteroid Research
The Lincoln Near-Earth Asteroid Research project is a cooperative project between the United States Air Force, NASA, and MIT's Lincoln Laboratory for the systematic discovery and tracking of near-Earth asteroids. LINEAR was responsible for the majority of asteroid detections since 1998 until...
asteroid survey. The object is estimated by NASA's Near Earth Object Program Office to be 580 meters in diameter with an approximate mass of 2.6×1011 kg.
According to NEODyS
NEODyS
NEODyS is an Italian and Spanish service that provides information on Near Earth Objects with a convenient Web-based interface. It is based on a continually and automatically maintained database of near earth asteroid orbits. This site provides a number of services to the NEO community...
(which compiles data from the IAU's Minor Planet Center), the Palermo Scale
Palermo Technical Impact Hazard Scale
The Palermo Technical Impact Hazard Scale is a logarithmic scale used by astronomers to rate the potential hazard of impact of a near-earth object . It combines two types of data—probability of impact, and estimated kinetic yield—into a single "hazard" value...
rating is currently −3.52 for the 2102 encounter, and −8.09 and −6.81 for encounters in 2103 and 2104 respectively. The ratings are based on 961 optical observations dating from February 16, 2002. JPL's Sentry System has returned similar results with a Palermo Scale
Palermo Technical Impact Hazard Scale
The Palermo Technical Impact Hazard Scale is a logarithmic scale used by astronomers to rate the potential hazard of impact of a near-earth object . It combines two types of data—probability of impact, and estimated kinetic yield—into a single "hazard" value...
rating of −4.91 for the 2102 encounter, based on 908 optical observations also dating from February 16, 2002. This continues a trend of decreasing Palermo rating with continuing observations.
It will pass 0.02 AU from the Earth on May 1, 2032, allowing a refinement to the orbit.
Being ~580 meters in diameter, if were to impact land, it would produce a crater about 10 kilometres wide and an earthquake of magnitude 7.4.
See also
- 3103 Eger3103 Eger3103 Eger is an Apollo and Mars-crosser asteroid that was discovered in 1982, by Miklós Lovas. It was named after the city of Eger, Hungary.It makes eight approaches to Earth less than in the 20th and 21st centuries. The last close approach was in August 2006 at...
- AubriteAubriteAubrites are meteorites named for Aubres, a small achondrite meteorite that fell near Nyons, France, in 1836. They are primarily composed of the orthopyroxene enstatite, and are often called enstatite achondrites...
- E-type asteroidE-type asteroidE-type asteroids are asteroids thought to have enstatite achondrite surfaces. They form a large proportion of asteroids inward of the main belt known as Hungaria asteroids, but rapidly become very rare as the main belt proper is entered. There are, however, some that are quite far from the inner...
- Hungaria familyHungaria familyThe Hungaria asteroids are a group of asteroids in the asteroid belt that orbit the Sun between 1.78 and 2.00 AU. The asteroids typically have a low eccentricity and an inclination of 16 to 34 degrees....
- List of notable asteroids
- Asteroid deflection strategiesAsteroid deflection strategiesAsteroid mitigation strategies are "planetary defense" methods by which near-Earth objects could be diverted, preventing potentially catastrophic impact events. A sufficiently large impact would cause massive tsunamis or an impact winter, or both...
- Asteroid naming conventions