View Issue Details

IDProjectCategoryView StatusLast Update
0000883SkyChart2-Catalog datapublic14-03-29 17:55
Reporterlukebl Assigned ToPatrick Chevalley  
PriorityhighSeverityfeatureReproducibilityN/A
Status closedResolutionfixed 
PlatformX86OSWindowsOS Version7
Product Version3.2 
Target Version3.10Fixed in Version3.9 SVN 
Summary0000883: Satellites of the outer planets
DescriptionCdC currently does not have the data for the minor satellites of the outer planets - Jupiter, saturn, Uranus & Neptune.

Many of these are within the reach of amateur CCD equipment, and I would like to have them included.
Steps To ReproducePlease add the planetary satellites, particularly those which reach a magnitude of 19 or brighter, such as Amalthea, Himalia, Pasiphae, and Nereid.
TagsNo tags attached.

Relationships

related to 0000532 closedPatrick Chevalley satellites Neptune 

Activities

Patrick Chevalley

11-10-13 10:31

administrator   ~0001721

This can be implemented by using the elements on Horizon web site
http://ssd.jpl.nasa.gov/horizons.cgi

With the following input:

Ephemeris Type [change] : ELEMENTS
Target Body [change] : Triton (NI) [801]
Center [change] : Neptune System Barycenter [500@8]
Time Span [change] : Start=2011-10-13, Stop=2011-10-23, Step=1 d
Table Settings [change] : defaults
Display/Output [change] : download/save (plain text file)

We get:

2455847.500000000 = A.D. 2011-Oct-13 00:00:00.0000 (CT)
 EC= 2.186397812782998E-05 QR= 2.370907711882290E-03 IN= 1.296539898992189E+02
 OM= 2.189075867504152E+02 W = 1.078964092032596E+02 Tp= 2455847.360042168759
 N = 6.125534036489272E+01 MA= 8.573164596589077E+00 TA= 8.573538096316021E+00
 A = 2.370959550490044E-03 AD= 2.371011389097798E-03 PR= 5.877038603581521E+00

Then compute satellite X,Y,Z relative to the main planet, sum with geocentric X,Y,Z of main planet.

lukebl

11-10-13 10:52

reporter   ~0001722

Many thanks, but where do I input this data into CdC, so that I can display, for instance, the position of Triton.

Patrick Chevalley

11-10-13 12:41

administrator   ~0001723

Sorry for the confusion, this not work at the moment.
I was just taking note of the way I plan to implement this new function.

Patrick Chevalley

13-10-15 14:41

administrator   ~0002613

It was not a good idea to use the osculating elements so I go another way.

Revision 2648 to 2652 replace the satellites computation, removing the time limit of 2020, and add Phoebe,Triton, Nereid and Charon.
http://sourceforge.net/p/skychart/code/2648/
http://sourceforge.net/p/skychart/code/2649/
http://sourceforge.net/p/skychart/code/2650/
http://sourceforge.net/p/skychart/code/2651/
http://sourceforge.net/p/skychart/code/2652/

Revision 2654 add 33 faint satellites:
http://sourceforge.net/p/skychart/code/2654/

Issue History

Date Modified Username Field Change
11-10-12 19:38 lukebl New Issue
11-10-13 10:31 Patrick Chevalley Note Added: 0001721
11-10-13 10:31 Patrick Chevalley Assigned To => Patrick Chevalley
11-10-13 10:31 Patrick Chevalley Status new => acknowledged
11-10-13 10:31 Patrick Chevalley Target Version 0.3.0 => 3.6
11-10-13 10:52 lukebl Note Added: 0001722
11-10-13 11:21 Patrick Chevalley Target Version 3.6 => 3.8
11-10-13 12:41 Patrick Chevalley Note Added: 0001723
12-12-31 10:33 Patrick Chevalley Target Version 3.8 => 3.10
13-10-15 14:29 Patrick Chevalley Relationship added related to 0000532
13-10-15 14:41 Patrick Chevalley Note Added: 0002613
13-10-15 14:41 Patrick Chevalley Status acknowledged => resolved
13-10-15 14:41 Patrick Chevalley Resolution open => fixed
13-10-15 14:41 Patrick Chevalley Fixed in Version 0.3.0 => 3.9 SVN
14-03-29 17:55 Patrick Chevalley Status resolved => closed