Stellarium/stellarium v26.3

on GitHub

The installers are located in the "Assets" section at the end of these release notes!

Glad to announce the release of Stellarium 26.3 for all platforms. This is our third release in 2026 with exciting features and many bug fixes.

The major changes of this version:

• Added Potawatomi skyculture
• Added new plugin: Object visibility
• Many improvements in plugins
• Many improvements in Core and GUI
• Many updates in sky cultures
• Improvements in scripting engine

Thanks to all the developers, testers, and users who made this release possible with your contributions and feedback.

What's Changed

Full list of changes:

• Added new plugin 'Object visibility' (GH: #4933)
• Added distance to label of geo targets in ArchaeoLines plugin (GH: #4903)
• Added support for Alpha-5 TLE format in Satellites plugin (GH: #5054)
• Added Scenery3D endpoints to openAPI specification in Remote Control plugin (GH: #5108)
• Added new polygons and adjust period across all skycultures (GH: #5062)
• Added slant and ground distance to aircraft info panel (GH: #5110)
• Added tool to follow the location changes and return to back in AstroCalc/Eclipses tools (GH: #5096)
• Added small speedup for filling the data in AstroCalc/WUT tool
• Added sky culture loader to SCM (GH: #5019)
• Added Potawatomi skyculture (GH: #4869)
• Added dome mode for core.moveToSelectedObject() method
• Added dome mode for core.moveToObject() method
• Added ability to jump to specific circumstances for transit of planets in AstroCalc/Eclipses tool
• Added ability to jump to specific circumstances for local eclipses in AstroCalc/Eclipses tool (GH: #5099)
• Added NASA / Espenak terms for eclipse timings into AstroCalc/Eclipses tool (GH: #5093)
• Added OpenAPI (SwaggerUI) into Remote Control plugin (GH: #5086)
• Added context for Hydra (GH: #5089)
• Added 2 bright novae
• Added option to reposition toolbars in other corners (GH: #5022)
• Added context for few UI elements
• Added new tab "Twilight map" to Object Visibility plugin (GH: #5047)
• Added Nova Tauri 2026
• Added SN 2026sqf
• Added ability to hiding the marker of CCD center in Oculars plugin (GH: #5072)
• Added OHOS platform detection module (GH: #5065)
• Added ability to finding the selected SSO in list of celestial bodies in AstroCalc/Ephemeris tool (GH: #5060)
• Added new tab 'Twilight limits' to Object Visibility plugin (GH :#5041)
• Added Tibetan spelling, transliteration and IPA for Tibetan SC (GH: #5036)
• Added TCP transport for LX200 protocol in Telescope Control plugin (GH: #5030)
• Added ability compiling via pkgsrc on Darwin platform without patches
• Added sky HiPS display controls (GH: #5021)
• Fixed axial rotation of Phoboes and Deimos 3D models (GH: #5112)
• Fixed support for Alpha-5 TLE format in Satellites plugin in case where these data already in our JSON catalog
• Fixed openAPI documentation in Remote Control plugin
• Fixed documentation of Calendars plugin (GH: #4975)
• Fixed SC time slider in ViewDialog can be more than currentYear (GH: #5111)
• Fixed labels in Romanian SC (GH: #5010)
• Fixed stupid typo in AstroCalc GUI
• Fixed localization support of Remote Control plugin
• Fixed localized output the list of sky cultures in Remote Control plugin (GH: #5109)
• Fixed tool to getting a system info
• Fixed sorting periodic comets in AstroCalc/WUT tool
• Fixed sorting HIP-like stars (standard modern designation: CAT XXXXX)] in AstroCalc/WUT tool
• Fixed sorting deep-sky objects in AstroCalc/WUT tool
• Fixed sorting minor planets in AstroCalc/WUT tool
• Fixed transit line in AstroCalc/Graphs/AltVsTime tool
• Fixed missing translations
• Fixed localization support for Potawatomi SC
• Fixed Remote Control plugin
• Fixed visual style for 3 buttons in Configuration dialog
• Fixed saving/retrieving stored main window size on scaled screens (GH: #5082)
• Fixed typos in sky cultures
• Fixed deleting asteroids through Solar Sistem Editor plugin (GH: #5056)
• Fixed link error when --as-needed linker flag set in Telescope Control plugin (GH: #5067)
• Fixed leaking glow of active icon into the inactive one
• Fixed build on Qt 5.12
• Fixed asteroids with shortened names (GH; #5053)
• Fixed close/cancel behaviour of Constellation Editor in SCM plugin
• Fixed LX200 protocol incompatinilities in Telescope Control plugin (GH: #5029)
• Fixed segmenation fault for INDI/INDIGO drivers without UNPARK item in Telescope Control plugin (GH: #5024)
• Fixed init sequence
• Fixed missing headers
• Fixed map regression in AstroCalc/Positions (GH: #4900)
• Fixed localization support of Object Visibility plug-in
• Fixed bookmarks for Solar System Editor plugin
• Fixed translatability of new plugin
• Fixed context for lunar mansions in JK SC's (GH: #5033)
• Fixed translatability the description of script
• Fixed removes nebulae images when program language is not English when core.clear() is called (GH: #5014)
• Fixed compiling with QXlsx and Qt 6.10+
• Fixed the ability to translation of calendars
• Fixed build on macOS and Windows
• Fixed uninitialized flags
• Changed core: Improve legibility of text esp. in screenshots (GH: #5113)
• Changed core: Make Lightweight atmosphere model the default
• Changed core: Avoid duplicate computation
• Changed core: Implement removal of tiles that go out of the viewport
• Changed core: Update HiPS text & controls when a survey is changed
• Changed core: Don't use long int to guarantee width, use qint64
• Changed core: Set desktop file name for the application (GH: #5032)
• Changed core: Replace an old-style connect in a commented out line
• Changed core: New connect syntax for main program (GH: #5037)
• Changed core: Use new connect syntax for gui classes (GH: #4984)
• Changed core: Allow custom azimuth for lookZenith and lookNadir in alt-azimuthal mount mode
• Changed core: Avoid downcasting GimbalOrbit to KeplerOrbit
• Changed core: Avoid dereferencing invalid pointer
• Changed core: Use the same rounding for window size as Qt does
• Changed core: Remove useless static_cast(M_PI) and the like
• Changed core: Don't create a projector just to learn current FoV
• Changed core: Force Nomenclature update on FOV change
• Changed GUI: Compactification the tables in AstroCalc/Eclipses tool (GH: #5097)
• Changed GUI: The "Use decimal degrees" option split into 2 new options (GH: #4992)
• Changed GUI: Let's use same script sort order in GUI and Remote Control plugin (GH: #5075)
• Changed GUI: Fix computation of physical canvas size in MapWidget
• Changed GUI: Simplify layout in SC Exploration tab of the View dialog
• Changed GUI: use regionKey() for sky culture region matching to avoid CJK substring issues (GH: #5031)
• Changed GUI: Compactify View dialog
• Changed SolarSystem: initialize compute pos algorithm choice inline
• Changed SolarSystem: Remove grouping of marker display
• Changed SolarSystem: initialize data with constants inline
• Changed SolarSystem: Update gimbal position also when time is stopped (GH: #4963)
• Changed Bright Novae plugin: nova light curve continuity (GH: #5069)
• Changed Calendars plugin: Make Maya correlation date configurable
• Changed Object Visibility plugin: Improve two first tabs (GH: #5081)
• Changed GUI of Remote Control plugin
• Changed Remote Control plugin: Extend script limits
• Changed Remote Control plugin: Extend OpenAPI specs to adapt to latest changes in master
• Changed Remote Control plugin: Further improve OpenAPI specs
• Changed Sky Culture Maker plugin: Refactor constellation display name lookup (GH: #5101)
• Changed Sky Culture Maker plugin: keep illustration names
• Updated FastFloat to v8.2.0
• Updated GCVS catalog
• Updated messier_marathon.ssc script (GH: #5020
• Updated CPM to version 0.42.3
• Updated QXlsx to version 1.5.1.1
• Updated table in AstroCalc/Eclipses/Transits tool
• Updated Lokono sky culture: Upload artworks and update index.json (GH: #5105)
• Updated definitions and artwork in Egyptian (Dendera) sky culture
• Updated Balinese sky culture
• Updated identifiers for periodic comets
• Updated discovery circumstances for comets and minor planets
• Updated default list of exoplanets
• Updated list of planetary features
• Updated default list of locations
• Updated translations
• Updated photometry data of satellites
• Removed global SC beginTime and endTime (GH: #5070)
• Removed XLSX support for Windows/Qt5 packages
• Removed references to core.getSkyLanguage and core.setSkyLanguage (GH: #5013)

Packages notes

Verify

GPG signature

1. Import Stellarium's GPG key
   curl -O https://stellarium.org/files/stellarium.gpg
2. List Stellarium's GPG key
   gpg --with-fingerprint --show-keys --keyid-format long stellarium.gpg
   id: rsa4096/BF38D4D02A328DFF 2012-04-07
   fingerprint: 7915 1C2E 6351 E727 8DA1 A730 BF38 D4D0 2A32 8DFF
3. Verify the binary file is valid (tarball for example)
   gpgv --keyring ./stellarium.gpg stellarium-26.3.tar.gz.asc stellarium-26.3.tar.gz