Please note: this site is experimental, data may be cancelled anytime, nothing is due. Read the disclaimer for more information.

The Double Star Database contains:

153039 records from the WDS catalog (Release 2020-12-25)
3278 records from the ORBIT6 catalog with 2812 matches (Release 2020-12-25)
32066 records matched to HIPPARCOS catalog
99840 records matched to Tycho-2
54096 records matched to SAO catalog
139155 records matched to Gaia DR2
9110 records from the Bright Star Catalogue - Harvard Revised (HR) catalog
182 common star names
99 double star reports (88 distinct doubles)
376 measured

If you're a newcomer, you could ask yourself: and now what I have to do?
Ok, don't panic. First, click on the Database tab and look at the left vertical bar: I prepared ready-to-use double star selections for you. Just click on the names, for example the most populars doubles list or the three stars systems list
Next, I suggest to register yourself choosing a username and password: once you're logged in, use the Setup tab to setup your site's preferences.
Remember to input your telescope's diameter (aperture): by means of the Dawes formula I can calculate the minimum separation between two stars permitted by your instrument, so you can filter out doubles too close to be seen.
Have fun.


This site is maintained during my spare time.
If you find it useful and you want to contribute, you can make a welcomed donation.

StelleDoppie version 2.7

[new] a new tab Components was added, to show single star component
      data, infos and catalogs.
[new] double entry table with distances and position angles
      between components
[upd] Cartes du Ciel catalogs DSD, DSDv, DSDm
[fix] some virtual eyepiece could not be calculated because a
      component was missing
[fix] infrared band warning

StelleDoppie version 2.6
[upd] a new layout adapts tables to windows size, or more space for data
[upd] orbits are now displayed as blue dots, not connected with lines.
      There's a serius problem with trigonometric functions precision in the language.
      I gave up. This may not be the best display solution but avoid the 
     "spaghetti orbits" effect (i.e. Zet Boo)
[new] added a popup on the right column to change list format on the fly. This is the
      same found in Setup->Preferences->List Type, but I felt uncomfortable to play with. 
      I recall you can create you own custom columns list if you login.
[fix] Excel export was not ordered as the list shown
[fix] some GAIA codes where interpreted as numbers when exporting to Excel, rounded (!)
[fix] ordering by modification date (date_mod) did not worked properly
[fix] some minor issues fixed
[upd] WDS and all related databases are now updated to the latest version.

Show all news

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Version: 2.7.1

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