Drift of Great Red Spot on Jupiter
Currently Stellarium already uses a semi-experimental coefficient for GRS drift, and this correction works for a short period. Ideally we should extend this short period and simulate a longer period - around the past 200 years where observations are available. To solve this task we can use data from the JUPOS website to make a tabular interpolation for GRS longitudes as time function. For the near future, continuation of the current drift rate is a working best-guess solution.
Possible better solution for set GRS position on Jupiter's surface: create an one or more analytical equations for calculate longitude of GRS.
Skills needed: C++, Basic astronomy knowledge
Difficulty: easy
Blueprint information
- Status:
- Complete
- Approver:
- None
- Priority:
- Medium
- Drafter:
- Alexander Wolf
- Direction:
- Needs approval
- Assignee:
- pjw
- Definition:
- Drafting
- Series goal:
- Accepted for 0.13
- Implementation:
-
Implemented
- Milestone target:
-
0.13.3
- Started by
- Alexander Wolf
- Completed by
- Alexander Wolf
Related branches
Related bugs
| Bug #490019: Great Red Spot position is incorrect ... is there a way to adjust? | Fix Released |
Sprints
Whiteboard
First variant:
"List" of GRS longitudes since 1830 year on JUPOS website:
http://
http://
Possible "inner format":
year\tmonth\
Second variant (IMHO this is better way -- alexwolf):
Get data from JUPOS website and create an analytical equation for calculation of the longitude of GRS.
For both variants: Set the real longitude for the value for the Jovian rot_rotation_offset (e.g. in System II)
Work Items
Work items:
[alexwolf] Get data from JUPOS website: INPROGRESS
[alexwolf] Create a file with data in "inner format": TODO
[alexwolf] Create an analytical equations for calculate longitude of GRS: TODO
[alexwolf] Read this data in Stellarium and applies for dates from file: TODO
[alexwolf] Apply analytical equations for correct time intervals: TODO
[alexwolf] For dates not from known list use analytical equation for computation longitude for GRS: TODO
