JPL Small-Body Database: Difference between revisions

Revision as of 16:24, 17 December 2020

Revision as of 19:26, 5 January 2021

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|title=JPL Small-Body Database browser

|publisher=[[NASA]]/[[Jet Propulsion Laboratory|JPL]]

|accessdateaccess-date=2012-03-19

}}</ref>

== Close-approach data ==

As of August 2013 (planetary [[ephemeris]] [[Jet Propulsion Laboratory Development Ephemeris|DE431]]) close-approach data is available for the major planets and the 16 most massive asteroids. Close approach data is available by adding ";cad=1" or "&cad=1" to the end of the body's [[URL]].<ref>{{cite web|url=https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017U1;cad=1|title=JPL Small-Body Database Browser - 'Oumuamua (A/2017 U1)|accessdateaccess-date=June 15, 2018}}</ref> The JPL Small-Body Database close approach table lists a [[Linearity|linearized]] uncertainty. The time of close approach uncertainty and min/max distance correspond to the [[3-sigma]] level.

== Orbit diagram ==

A [[Java (programming language)|Java]] applet is available and provided as a 3D orbit visualization tool. The applet was implemented using unreliable [[Two-body problem|2-body methods]], and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate ephemerides use the [[JPL Horizons On-Line Ephemeris System]] that handles the [[n-body problem]] using [[numerical integration]]. The Java applet is available by adding ";orb=1" to the end of the body's URL.<ref>{{cite web|url=https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017U1;orb=1|title=JPL Small-Body Database Browser - 'Oumuamua (A/2017 U1)|accessdateaccess-date=June 15, 2018}}</ref>

==See also==