Jupiter Longitudes / Rotation rate change???

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qam1
2013-06-15
2013-07-14
  • qam1

    qam1 - 2013-06-15

    In the new version 0.12.1 and since 0.12.0 Jupiter's longitude and/or rotational rate has changed from previous versions (0.11.3 + 0.11.4).

    For example, in the Earth from other Bodies script. To view Earth's best view from Jupiter of the 21st century on 07/15/2058 the script goes to Jupiter's longitude 73W. This worked in the previous versions but now in the newer 0.12 versions at this longitude the Earth is well below the horizon. In the newer 0.12 versions, the script has to be set at 134E for the Earth to be in the same place.

    My other scripts that take place on Jupiter experience similar shifts. I can't tell if Stellarium shifted longitudes on Jupiter and/or the rotational rate has changed that longitudes don't point in the same direction at a given time as they did in the previous versions.

    I see no changes of any of the other planets.

    So was this change deliberate? That is, was Jupiter wrong in the previous versions but is now right? Or was Jupiter right in the previous versions and the shift was inadvertently done and is a bug in the newer version?

    I am asking because before I change all my scripts I want to be sure it's not a bug and it ends up being changed back.

    Side Note: The Earth from other Bodies script is unrunnable because of the change from advancing 1 day (24 Hours) no matter what planet you are on to advancing 1 solar day of the planet you are on. I am working to update it.

     
  • Alexander Wolf

    Alexander Wolf - 2013-06-15

    Since 0.12.0 Stellarium trying prediction of longitude for GRS and GRS now has drift. Current implementation is not very accurate and in the future versions it will be improved.

     
  • qam1

    qam1 - 2013-07-14

    Thanks, makes sense

    But I fixed my scripts that come with Stellarium that no longer work

    The Solar System Screen Saver

    http://www.lowerwolfjaw.com/astro/Stellarium/sss.htm

    and the Earth Best Views From Other Bodies I added back into my Earth From Others

    http://www.lowerwolfjaw.com/astro/Stellarium/efo.htm

     
    • Alexander Wolf

      Alexander Wolf - 2013-07-14

      http://www.lowerwolfjaw.com/astro/Stellarium/efo.htm - on this page link to archive with scripts are wrong.

      I updated scripts within Stellarium and added few new scripts from efo5.zip + I fixed mistake "brillancies" -> "brilliance".

       
  • qam1

    qam1 - 2013-07-14

    Fixed. I must of not saved before I uploaded

    The New version is efo5_1.zip

    http://www.lowerwolfjaw.com/astro/Stellarium/efo.htm

    or direct

    http://www.lowerwolfjaw.com/astro/Stellarium/efo5_1.zip

    And I think it should be Brilliancies, since the menu choice is to view all of them (more than one).

    When describing the planets Brightest moment, I've seen the terms "Greatest Brilliancy", "Greatest Brilliance" and "Greatest Illumination extent" all used interchangeably to mean the same thing.

     
    • Alexander Wolf

      Alexander Wolf - 2013-07-14

      OK, I'm update it's.

       


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