equinox in Alexandria at 140CE
Bug #1282558 reported by
Victor Reijs
This bug affects 1 person
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| Stellarium |
Fix Released
|
Medium
|
gzotti | ||
Bug Description
At 140/3/21 14:23:21 UTC (with DeltaT 2h 23min) I have in Stellarium for the Sun:
RA/DE (J2000): 1h35m49.
RA/DE (of date): 23h59m30s/+0°03'56"
Using DE422 (at 0140-03-21 (Julian calendar), 16:46:30 TT which is 14:23 UT) : 1h35m48.37s +10°06'00.6" GCRS RA & dec.
Similar results are seen in SkyMap Pro9, Sky View Cafe and JPL NASA
So the RA/DE (J2000.0) value of Stellarium looks the same as other programs, but the DE (of date) is not zero (which is for the other programs)...
This is related to all the info in Question #243957.
All the best,
Victor
Related branches
lp:~georg-zotti/stellarium/gz_fix-ecliptic-obliquity
- Alexander Wolf: Approve
- gzotti: Needs Resubmitting
-
Diff: 2869 lines (+1419/-206)28 files modifiedREADME (+5/-1)
data/default_config.ini.cmake (+22/-6)
src/CMakeLists.txt (+19/-0)
src/core/StelCore.cpp (+82/-15)
src/core/StelCore.hpp (+61/-36)
src/core/StelObject.cpp (+39/-19)
src/core/StelObject.hpp (+12/-2)
src/core/StelObserver.cpp (+28/-2)
src/core/VecMath.hpp (+42/-2)
src/core/modules/GridLinesMgr.cpp (+273/-24)
src/core/modules/GridLinesMgr.hpp (+140/-17)
src/core/modules/Landscape.cpp (+6/-0)
src/core/modules/Planet.cpp (+62/-18)
src/core/modules/Planet.hpp (+9/-3)
src/core/modules/SolarSystem.cpp (+4/-0)
src/core/planetsephems/elp82b.h (+1/-1)
src/core/planetsephems/gust86.c (+1/-1)
src/core/planetsephems/gust86.h (+3/-3)
src/core/planetsephems/precession.c (+260/-0)
src/core/planetsephems/precession.h (+59/-0)
src/core/planetsephems/sidereal_time.c (+35/-20)
src/core/planetsephems/vsop87.h (+1/-1)
src/gui/ConfigurationDialog.cpp (+4/-1)
src/gui/LocationDialog.cpp (+1/-1)
src/gui/ViewDialog.cpp (+5/-1)
src/gui/viewDialog.ui (+89/-32)
src/tests/testPrecession.cpp (+121/-0)
src/tests/testPrecession.hpp (+35/-0)
| tags: | added: archaeoastronomy |
| tags: | removed: archaeoastronomy |
| Changed in stellarium: | |
| status: | New → In Progress |
| assignee: | nobody → gzotti (georg-zotti) |
| importance: | Undecided → Medium |
Revision history for this message
| gzotti (georg-zotti) wrote | #1 |
| Changed in stellarium: | |
| milestone: | none → 0.14.0 |
| Changed in stellarium: | |
| status: | In Progress → Fix Committed |
Revision history for this message
| Alexander Wolf (alexwolf) wrote | #2 |
| Changed in stellarium: | |
| status: | Fix Committed → Fix Released |
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It seems the related branch fixes this nicely! RA 0h00m1.92s/DE 0° 0' 11.7" (including shift by topocentric parallax). I don't see DeltaT displayed, setting is default Espenak/Meeus.