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Zeryphex
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COMMUNITY ADDON - binary/multiple stars fixes for SE

08 Sep 2017 02:12

Mosfet wrote:
Well, usually such fixes are indeed included in next versions, that's the point of this thread as stated in the original post :)

I only recently downloaded and became acquainted with SpaceEngine, so I am a newbie.
KIC 9832227 was featured in a news article that I came-across ... and if JackDole had uploaded a version of KIC 9832227 for SpaceEngine, eight months ago, why was I not able to find that binary star system, recently?
 
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Mosfet
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COMMUNITY ADDON - binary/multiple stars fixes for SE

08 Sep 2017 02:49

You mean in the program? Most of data about stars used in SE are from HIPPARCOS database which does not contain specifically info on binary stars, those have to be treated differently, by scripts as these ones above. But Space Engine does not have (yet) some automatic update feature for data. Space Engine 0980 data about binary stars are from July 2016, when this version was made available, so that's why you didn't find the star.
A patch recently published, 0980e, while adopting new algorithms for precise solar system orbits, it also came with updated data sets, but it has to be manually installed, as well as the others addons/fixes.
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Zeryphex
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Posts: 6
Joined: 29 Aug 2017

COMMUNITY ADDON - binary/multiple stars fixes for SE

08 Sep 2017 03:14

Mosfet wrote:
You mean in the program? Most of data about stars used in SE are from HIPPARCOS database which does not contain specifically info on binary stars, those have to be treated differently, by scripts as these ones above. But Space Engine does not have (yet) some automatic update feature for data. Space Engine 0980 data about binary stars are from July 2016, when this version was made available, so that's why you didn't find the star.
A patch recently published, 0980e, while adopting new algorithms for precise solar system orbits, it also came with updated data sets, but it has to be manually installed, as well as the others addons/fixes.

I will just wait for SpaceEngineer to determine which variant of KIC 9832227 he wants to include, in the next SpaceEngine version ... between the JackDole measurements/calculations or the Mosfet measurements/calculations ... or average of the two ... or SpaceEngineer's own variant of KIC 9832227.
haha
 
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JackDole
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COMMUNITY ADDON - binary/multiple stars fixes for SE

08 Sep 2017 05:09

KIC 9832227 (Boomstar)

I post here again my version of 'KIC 9832227'
// Name: KIC_9832227.sc
// JackDole 2017.09.08 12:49:05

//------------------------------------------------------------------------------
// https://arxiv.org/pdf/1704.05502.pdf
//------------------------------------------------------------------------------

StarBarycenter "KIC 9832227"
{
    RA      19 29 15.954
    Dec     46 37 19.88
    Dist    565
    
    MassSol 1.714
}

//------------------------------------------------------------------------------

(Put script in 'addons\catalogs\stars')
// Name: KIC_9832227.sc
// Comment: Merger 2022
// JackDole 2017.09.08 12:50:39

//------------------------------------------------------------------------------
// https://arxiv.org/pdf/1704.05502.pdf
//------------------------------------------------------------------------------

Star "KIC 9832227 A"
{
    ParentBody  "KIC 9832227"
    Class       "G4 V"
    
    RadSol      1.581
    MassSol     1.395
    
    Lum         2.609
    FeH         0.101
    Teff        5800
    
    Orbit
    {
        SemiMajorAxis   0.00258512
        Period          0.0012538570918877
        Eccentricity    0
        Inclination     53.2
        AscendingNode   0
        MeanAnomaly     0
        ArgOfPericenter 0
    }
}

Star "KIC 9832227 B"
{
    ParentBody  "KIC 9832227"
    Class       "G1 V"
    
    RadSol      0.830
    MassSol     0.318
    
    Lum         0.830
    FeH         0.101
    Teff        5920
    
    Orbit
    {
        SemiMajorAxis   0.01134038
        Period          0.0012538570918877
        Eccentricity    0
        Inclination     53.2
        AscendingNode   0
        MeanAnomaly     0
        ArgOfPericenter 180
    }
}

//------------------------------------------------------------------------------

(Put script in 'addons\catalogs\planets')
scr00086 (2).png
(The picture is from SE 0.971)
KIC9832227.pak
(1.33 KiB) Downloaded 8 times
(Put this in 'addons')

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