Potentially Hazardous Asteroids 2013

Autor:

NASA/JPL-Caltech

Credit:

http://www.jpl.nasa.gov/spaceimages/details.php?id=PIA17041

Krótki link:

https://www.plwiki.pl/b/46d9f

źródło:

Wikimedia Commons

Wymiary:

2048 x 2048 Pixel (1257347 Bytes)

Opis:

Lightness-reversed cropped plot of orbits of all the known Potentially Hazardous Asteroids (PHAs), numbering over 1,400 as of early 2013. These are the asteroids considered hazardous because they are fairly large (at least 460 feet or 140 meters in size), and because they follow orbits that pass close to the Earth's orbit (within 4.7 million miles or 7.5 million kilometers).

Licencja:

Public domain