Exoplanets plugin

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  | First public version of plugin
 
  | First public version of plugin
 
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  | ''0.1.4''
 
  | ''0.12.0''
 
  | ''0.12.0''
 
  | 1
 
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  | Use new rendering engine of core
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  | Use new rendering engine of core; Distribution mode; Timeline mode
 
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Revision as of 10:53, 25 November 2012

Contents

Description

This plugin plots the position of stars with exoplanets. Exoplanets data is derived from "The Extrasolar Planets Encyclopaedia"

Using the Exoplanets plugin

  1. Enable the tool by clicking the tool-bar button "Load at startup"
  2. Find the stars with exoplanets by their designation (24 Sex as example)

Catalog of stars with exoplanets

You can modify the exoplanets.json file manually using a text editor. If you are using Windows, it is strongly recommended to use an advanced text editor such as Notepad++ to avoid problems with end-of-line characters. (It will also color the JSON code and make it easier to read.)

Warning: Before editing your JSON file, make a backup copy. Leaving out the smallest detail (such as a comma or forgetting to close a curly bracket) will prevent Stellarium from starting.

The path to the directory which contains exoplanets.json is something like:

  • C:\Users\UserName\AppData\Roaming\Stellarium\modules\Exoplanets (Windows Vista, Windows 7)
  • C:\Documents and Settings\UserName\Application Data\Stellarium\modules\Exoplanets (Windows XP)
  • HomeDirectory/Library/Preferences/Stellarium/modules/Exoplanets (Mac OS X)
  • ~/.stellarium/modules/Exoplanets (Linux)

(Note that this is a hidden folder, so in order to find it you may need to change your computer's settings to display hidden files and folders.)

Format of catalog

To add a new star with exoplanets, open a new line after line 5 and paste the following, note commas and brackets, they are important:

                "Star designation":
		{
			"exoplanets":
			[
			{
				"mass": mass of exoplanet (M jup),
				"radius": radius of exoplanet (R jup),
				"period": period of exoplanet (days),
				"semiAxis": semi-major axis (AU),
				"eccentricity": orbit's eccentricity,
				"inclination": orbit's inclination (degree),
				"angleDistance": angle distance from star (arcseconds),
				"discovered": exoplanet discovered year,
				"planetName": "designation of planet"
			},
			{
				"mass": mass of exoplanet (M jup),
				"radius": radius of exoplanet (R jup),
				"period": period of exoplanet (days),
				"semiAxis": semi-major axis (AU),
				"eccentricity": orbit's eccentricity,
				"inclination": orbit's inclination (degree),
				"angleDistance": angle distance from star (arcseconds),
				"discovered": exoplanet discovered year,
				"planetName": "designation of planet"
			}
			],
			"distance": value of distance to star (pc),
			"stype": "spectral type of star",
			"smass": value of mass of star (M sun),
			"smetal": value of metallicity of star,
			"Vmag": value of visual magnitude of star,
			"sradius": value of radius of star (R sun),
			"effectiveTemp": value of effective temperature of star (K),
			"RA": "Right ascension (J2000)",
			"DE": "Declination (J2000)"
		},

For example, record for 24 Sex:

                "24 Sex":
		{
			"exoplanets":
			[
			{
				"mass": 1.99,
				"period": 452.8,
				"semiAxis": 1.333,
				"eccentricity": 0.09,
				"angleDistance": 0.017821,
				"discovered": 2010,
				"planetName": "b"
			},
			{
				"mass": 0.86,
				"period": 883.0,
				"semiAxis": 2.08,
				"eccentricity": 0.29,
				"angleDistance": 0.027807,
				"discovered": 2010,
				"planetName": "c"
			}
			],
			"distance": 74.8,
			"stype": "G5",
			"smass": 1.54,
			"smetal": -0.03,
			"Vmag": 7.38,
			"sradius": 4.9,
			"effectiveTemp": 5098,
			"RA": "10h23m28s",
			"DE": "-00d54m08s"
		},

Version history

Plug-in version Stellarium version Catalog version Significant changes
0.1.2 0.11.4 1 First public version of plugin
0.1.4 0.12.0 1 Use new rendering engine of core; Distribution mode; Timeline mode

Acknowledgment

We thank the following people for their contribution and of the valuable comments:

How you can help

We are welcome bug reports, feature requests and feedback through the usual channels (trackers, forums and so on).

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