Jump to content

File:PIA17041-Orbits-PotentiallyHazardousAsteroids-Early2013.jpg

Page contents not supported in other languages.
This is a file from the Wikimedia Commons
From Wikipedia, the free encyclopedia

Original file (2,048 × 2,048 pixels, file size: 1.16 MB, MIME type: image/jpeg)

Summary

Description
English: PIA17041: Orbits of Potentially Hazardous Asteroids (PHAs)

http://photojournal.jpl.nasa.gov/catalog/PIA17041

This graphic shows the 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). But being classified as a PHA does not mean that an asteroid will impact the Earth: None of these PHAs is a worrisome threat over the next hundred years. By continuing to observe and track these asteroids, their orbits can be refined and more precise predictions made of their future close approaches and impact probabilities.

More information about asteroids and near-Earth objects is at: http://www.jpl.nasa.gov/asteroidwatch.
Date
Source http://photojournal.jpl.nasa.gov/jpeg/PIA17041.jpg
Author NASA/JPL-Caltech
Other versions

Licensing

Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
Warnings:

Captions

Add a one-line explanation of what this file represents

Items portrayed in this file

depicts

18 February 2014

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current21:04, 16 October 2018Thumbnail for version as of 21:04, 16 October 20182,048 × 2,048 (1.16 MB)Perhelionnew crop from original uncompressed (TIFF) source with 90% quality (instead of 2 × 75%)
05:07, 5 June 2018Thumbnail for version as of 05:07, 5 June 20182,295 × 2,246 (692 KB)GretarssonCropped 29 % horizontally, 14 % vertically using CropTool with precise mode.
21:54, 18 February 2014Thumbnail for version as of 21:54, 18 February 20143,254 × 2,613 (795 KB)DrbogdanUser created page with UploadWizard
No pages on the English Wikipedia use this file (pages on other projects are not listed).

Global file usage