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:

146271 records from the WDS catalog (Release 2019-01-18)
2942 records from the ORBIT6 catalog with 2475 matches (Release 2019-01-18)
31302 records matched to HIPPARCOS catalog
97483 records matched to Tycho-2
52631 records matched to SAO catalog
139155 records matched to Gaia DR2
9110 records from the Bright Star Catalogue - Harvard Revised (HR) catalog
184 common star names
55 double star reports (50 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.

Stelle Doppie 2.5 features Gaia DR2. This release is dedicated to our friend Fabio Bocci, recently passed away.

StelleDoppie version 2.4

[new] internet domain
[new] https (encrypted connection)
[fix] small bugs fixed in Complete tab for Aladin CDS image
[fix] small visualization errors
[fix] DEC was ignored in advanced searches, and lists saved where huge
[upd] RA,DEC input field as free-text input rather than popups
[new] RA,DEC accepts both sexagesimal and decimal degrees
[new] RA,DEC "between" function in searches
[upd] updated databases
[upd] switched to a new server

StelleDoppie version 2.3

[new] in Misc->Discoverer, a filter to speedup search of discoverer was implemented
[upg] graphical routines upgraded
[new] a new filter: physical. Other than WDS flags, I use rPM information here to
      estimate doubles phisically bound
[new] a legend for color codes was add in orbit graph
[new] in advanced search, a "not equal" option  was added in the popup list.
      Because in Database one can confuse the filters, when a "not equal" is selected
      the filter will became red
[fix] adding a text list to an existing one was broke
[fix] in some cases, a not-standard list was exported as standard in Excel
[new] export to Italian-language Excel (we use commas instead of dots as floating point
[upd] merge lists now defaults last modified lists
[new] custom list - column in lists are user-definible selecting "custom list" in

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Version: 2.5.1

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