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ajtribick
PostPosted: Mon, 07-10-19, 21:10 GMT 
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Twenty new moons of Saturn, giving a total of 82 moons. Jupiter now in second place with 79.

https://carnegiescience.edu/news/saturn ... -name-them
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t00fri
PostPosted: Mon, 07-10-19, 22:13 GMT 
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Not bad, many thanks for the lot...I suppose that the orbital elements are either known with substantial uncertainties or partly not known at all?
The 62 known moons show a somewhat similar motion profile as the twenty new ones.

from celestia.Sci:

[Click on image for a better view]
Attachment:
saturn_moons.jpg
saturn_moons.jpg [ 40.64 KiB | Viewed 947 times ]

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John Van Vliet
PostPosted: Thu, 10-10-19, 5:59 GMT 
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if the new moons are in horizons , then it will be time to update the spice ssc for saturn

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t00fri
PostPosted: Thu, 10-10-19, 14:44 GMT 
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John Van Vliet wrote:
if the new moons are in horizons , then it will be time to update the spice ssc for saturn


Right. I am just a bit worried that with so many objects the performance will be significantly slowed down with spice...? What do you think?

Cheers,
Fridger

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John Van Vliet
PostPosted: Thu, 10-10-19, 17:30 GMT 
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the pds ftp page has a spice kernel for all 20 pulse a few
ftp://ssd.jpl.nasa.gov/pub/eph/satellites/bsp/

Code:
 brief -c sat428.bsp
 
BRIEF -- Version 4.0.0, September 8, 2010 -- Toolkit Version N0066
 
 
Summary for: sat428.bsp
 
Bodies: SATURN (699) w.r.t. SATURN BARYCENTER (6)
        65035 w.r.t. SATURN BARYCENTER (6)
        65040 w.r.t. SATURN BARYCENTER (6)
        65041 w.r.t. SATURN BARYCENTER (6)
        65045 w.r.t. SATURN BARYCENTER (6)
        65048 w.r.t. SATURN BARYCENTER (6)
        65050 w.r.t. SATURN BARYCENTER (6)
        65055 w.r.t. SATURN BARYCENTER (6)
        65056 w.r.t. SATURN BARYCENTER (6)
        65065 w.r.t. SATURN BARYCENTER (6)
        65066 w.r.t. SATURN BARYCENTER (6)
        65067 w.r.t. SATURN BARYCENTER (6)
        65068 w.r.t. SATURN BARYCENTER (6)
        65069 w.r.t. SATURN BARYCENTER (6)
        65070 w.r.t. SATURN BARYCENTER (6)
        65071 w.r.t. SATURN BARYCENTER (6)
        65072 w.r.t. SATURN BARYCENTER (6)
        65073 w.r.t. SATURN BARYCENTER (6)
        65074 w.r.t. SATURN BARYCENTER (6)
        65075 w.r.t. SATURN BARYCENTER (6)
        65076 w.r.t. SATURN BARYCENTER (6)
        65077 w.r.t. SATURN BARYCENTER (6)
        65078 w.r.t. SATURN BARYCENTER (6)
        65079 w.r.t. SATURN BARYCENTER (6)
        65080 w.r.t. SATURN BARYCENTER (6)
        65081 w.r.t. SATURN BARYCENTER (6)
        65082 w.r.t. SATURN BARYCENTER (6)
        65083 w.r.t. SATURN BARYCENTER (6)
        65084 w.r.t. SATURN BARYCENTER (6)
        Start of Interval (ET)              End of Interval (ET)
        -----------------------------       -----------------------------
        1899 DEC 20 00:00:00.000            2100 JAN 02 00:00:00.000
 


with one kernel there should not be much of a performance hit

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t00fri
PostPosted: Thu, 10-10-19, 19:00 GMT 
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looks like fun!

Cheers,
Fridger

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John Van Vliet
PostPosted: Fri, 11-10-19, 3:54 GMT 
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Quote:
looks like fun!


time consuming for sure , but if i do not add "before & after" SPICE orbits it is a easy copy / paste and minor edit for each one .

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