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XBrain130
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COMMUNITY ADDON - Catalog Fixes for SE

17 Sep 2017 10:50

HD 226868 (Cygnus X-1) appears twice, once as a solitary star with the catalog numbers, and once a with its black hole companion with the most known name.
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COMMUNITY ADDON - Catalog Fixes for SE

17 Sep 2017 11:39

Git it! HD 226868 should be added to the Cygnus X-1 definition in the BlackHoles.sc catalog, otherwise SE have no way to merge it with star HD 226868 from the HIPPSRCOS catalog:
StarBarycenter "HD 226868/Cygnus X-1"
 
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COMMUNITY ADDON - Catalog Fixes for SE

18 Sep 2017 09:58

The star Acamar - TET Eri has to be repaired.

In the file 'Catalogs0980.pak/stars/stars-bin.sc' must at 'StarBarycenter "TET Eri"' the line
     Dec -40 18 168524

be replaced by
     Dec -40 18 16.8524


Until this is done, this file can be used. Put it in 'data\catalogs\stars'.
// Filename: TETEriPatch.sc

RemoveStar "Acamar/TET Eri/HIP 13847/HD 18622"

StarBarycenter "Acamar/TET Eri"
{
    RA      02 58 15.67525
    Dec     -40 18 16.8524
    Dist    49.3865
}

TETEriPatch.sc
(199 Bytes) Downloaded 21 times



Bug was discovered by bjmben88.
bjmben88 wrote:
Source of the post I may be wrong but Acamar (Theta Eridani) seems to be in the wrong location. Can anyone confirm this?
 
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Mosfet
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COMMUNITY ADDON - Catalog Fixes for SE

24 Sep 2017 15:22

2014 MU69 is a catalog Kuiper Belt Asteroid which is the next target of NewHorizons probe after its encounter with Pluto.
From recent observations its shape has been better determined. The results show that the asteroid is either highly elongated or possibly a contact binary. I changed a bit the shape to make it more elongated, In time we'll have more data for sure.
Remove "2014 Mu69" {ParentBody "Sol"}
Asteroid    "2014 Mu69/(486958) 2014 Mu69"
{
    ParentBody     "Sun"
    Class          "Asteroid"
    AsterType      "Cubewano"
    Mass            6.4126e-09
    Radius          14.5
    InertiaMoment   0.39506
    Oblateness      0.44656
    OblatenessInfo  0
    RotationPeriod  475.8
    RotationEpoch   0
    Obliquity       93.642
    EqAscendNode    157.8

    AbsMagn         11.1
    SlopeParam      0.15
    AlbedoBond      0.2
    AlbedoGeom      0.24
    Brightness      2.25
    BrightnessHDR   1

    Surface
    {
        Randomize      (-2.000, -2.000, -0.919)
    }

    Orbit
    {
        RefPlane        "Ecliptic"
        Epoch           2457800.5
        Period          295.280815
        SemiMajorAxis   44.341343
        Eccentricity    0.0370284
        Inclination     2.4533
        AscendingNode   158.93034
        ArgOfPericenter 178.54446
        MeanAnomaly     309.63873
    }
}


Copy the code in a new .sc file and place it under addons/catalogs/planets/, or simply place the .pak file below under addons/
Attachments
scr00013.jpg
2014 MU69
2014MU69.pak
(935 Bytes) Downloaded 16 times
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JackDole
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COMMUNITY ADDON - Catalog Fixes for SE

29 Sep 2017 06:23

HD 164922/HIP 88348

skywalker66 wrote:
Source of the post Also, I found possible age error in the stellar system HD 164922 as compared in SE 0.980 with that of Wikipedia:
Stellar parameters:                                Space Engine 0.980                                Wikipedia
Spectrum                                              G9-V                                                      G9-V
Diameter                                               0.999 Solar Diameter                               0.999 Solar Diameter
Mass                                                    0.874 Solar Mass                                     0.874 Solar Mass
Luminosity                                            0.65157                                                   0.703
Temperature                                          5019. 9 C                                                5019.9 C
Age                                                      4.575 GA                                                 13.4 GA
Metallicity                                              0.16 FeH                                                 0.16 FeH
Rotation                                                24.762 Days                                            58.70 Days
"This star is metal-rich, with a metallicity of 0.16, or 144% the solar amount. This is particularly odd for a star as old as HD 164922."
https://en.wikipedia.org/wiki/HD_164922      This stellar system has two gaseous giant Jupiters much older by several billion years than the other systems such as Kapteyn's Star 11.31 GA, Kepler-444 12.22 GA, and PSR B1620-26 12.62 GA, all of which are true ages in SE. The age of our Universe is close to 13.82 GA. There is contested claim for the oldest star BD +17 3248 as 13.8 GA and with extreme poor metallicity. I thought everyone in the SE forum is welcome to report any possible errors in the star system data or even exoplanet data. Thank you again.

The 'Age' parameter is ignored in a script in the 'catalogs\stars' directory. So probably some other data.
If you want to make this information, you have to make a 'StarBarycenter' script in the 'catalogs\stars' directory and create a 'Star' script in the 'catalogs\planets'.

'Luminosity' is ignored when 'AbsMagn' or 'AppMagn' are defined. SpaceEngine calculates the luminosity itself, and apparently somewhat different from Wikipedia.
// Filename: HD_164922_BC.sc

// http://simbad.u-strasbg.fr/simbad/sim-id?Ident=HD+164922
// https://en.wikipedia.org/wiki/HD_164922

// Put this in 'data\catalogs\stars'

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

RemoveStar  "HIP 88348/HD 164922"

StarBarycenter "HD 164922 system"
{
    RA      18 02 30.8624
    Dec     26 18 46.805
    Dist    22.1
}

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

// Filename: HD_164922.sc

// Put this in 'data\catalogs\planets'

// https://en.wikipedia.org/wiki/HD_164922
//------------------------------------------------------------------------------

Star    "HD 164922/HIP 88348"
{
    ParentBody  "HD 164922 system"
    Class       "G9 V"
    
    MassSol     0.874
    RadSol      0.999
    
    Luminosity  0.703
    AppMagn     7.01
    AbsMagn     5.31
    
    Teff        5293
    FeH         0.16
    Age         13.4
}

//------------------------------------------------------------------------------
// http://exoplanet.eu/catalog/hd_164922_b/

Planet    "HD 164922 b"
{
    ParentBody     "HD 164922"
    
    Mass        107.6654
    Msini       107.6654
    
    DiscMethod  "RadVel"
    DiscDate    "2006"
    Updated     "2016.07.04"
    
    Orbit
    {
        Epoch           2451100
        Period          3.288502899
        SemiMajorAxis   2.115
        Eccentricity    0.126
        ArgOfPericen    129
    }
}

// http://exoplanet.eu/catalog/hd_164922_c/
Planet    "HD 164922 c"
{
    ParentBody     "HD 164922"
    
    Mass        12.913486
    Msini       12.913486
    
    DiscMethod     "RadVel"
    DiscDate       "2016"
    Updated        "2016.07.11"
    
    Orbit
    {
        Period          0.2074377005
        SemiMajorAxis   0.3351
        Eccentricity    0.22
        ArgOfPericen    81
    }
}

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

HD_164922_BC.sc
(496 Bytes) Downloaded 19 times
(Put this file in 'data\catalogs\stars')
HD_164922.sc
(1.49 KiB) Downloaded 17 times
(Put this file in 'data\catalogs\planets'}
 
ParadigmTheory
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COMMUNITY ADDON - Catalog Fixes for SE

29 Sep 2017 13:11

Star HIP 21479 (R Doradus) is shown as a red dwarf in SE when it's a red giant in real life. Could anyone make a script to fix this?
 
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COMMUNITY ADDON - Catalog Fixes for SE

29 Sep 2017 16:04

R Doradus/HD 29712/HIP 21479

ParadigmTheory wrote:
Source of the post Star HIP 21479 (R Doradus) is shown as a red dwarf in SE when it's a red giant in real life. Could anyone make a script to fix this?

// Filename: HD_29712_BC.sc
// JackDole 2017.09.29 23:41:33

// Put in 'data\catalogs\stars'

// http://simbad.u-strasbg.fr/simbad/sim-id?Ident=*+P+Dor
//------------------------------------------------------------------------------

RemoveStar  "HIP 21479/HD 29712"

StarBarycenter "HD 29712 system"
{
    RA      04 36 45.59127
    Dec     -62 04 37.7974
    Dist    54.61496450
}

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

// Filename: HD_29712.sc
// JackDole 2017.09.29 23:46:31

// Put in 'data\catalogs\planets'

// https://en.wikipedia.org/wiki/R_Doradus
//------------------------------------------------------------------------------

Star "* P Dor/R Dor/R Doradus/HD 29712/HIP 21479"
{
    ParentBody  "HD 29712 system"
    Class       "M8 IIIe"
    
    RadSol      370
    MassSol     1.2
    
    AppMagn     5.4
    
    Teff        2740
    
    RotationPeriod  8160
}

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

HD_29712_BC.sc
(483 Bytes) Downloaded 24 times
(Put in 'data\catalogs\stars')
HD_29712.sc
(564 Bytes) Downloaded 22 times
(Put in 'data\catalogs\planets')
 
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JackDole
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COMMUNITY ADDON - Catalog Fixes for SE

30 Sep 2017 01:41

Cygnus X-1/HIP 98298/HD 226868

XBrain130 wrote:
Source of the post HD 226868 (Cygnus X-1) appears twice, once as a solitary star with the catalog numbers, and once a with its black hole companion with the most known name.

// Filename: Cygnus_X-1_BC.sc

// Put in 'data\catalogs\stars'

// http://simbad.u-strasbg.fr/simbad/sim-id?Ident=Cyg+X-1
//------------------------------------------------------------------------------

RemoveStar  "HIP 98298/HD 226868"

StarBarycenter "HIP 98298/HD 226868/Cygnus X-1"
{
    RA      19 58 21.67595
    Dec     35 12 05.7783
    Dist    1858.73606
    
    Class   "O9.7 Ia"
    AppMagn 8.95
}

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

Cygnus_X-1_BC.sc
(513 Bytes) Downloaded 18 times
(Put in 'data\catalogs\stars')
 
A-L-E-X
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COMMUNITY ADDON - Catalog Fixes for SE

30 Sep 2017 02:04

Thank you Jack!  There is no way to download all the fixes in one file is there?
 
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JackDole
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COMMUNITY ADDON - Catalog Fixes for SE

30 Sep 2017 03:06

A-L-E-X wrote:
Source of the post There is no way to download all the fixes in one file is there?

Not yet.
 
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COMMUNITY ADDON - Catalog Fixes for SE

02 Oct 2017 16:44

Phunnie wrote:
I have many reasons to believe the planet KOI-4034.02 is bugged. It has an mass that's NaN, a height that's NaN, a diameter of 1.26 AU, and a lot more buggy things. This is also present in 0.980.

The problem is the radius of the planet, 94322655 Km! With this size it would have to be a star. And a rather big one.

But KOI-4034.02 is perhaps only a leftover in the 'ExoPlanets-cand.sc' ('ExoPlanets-unconfirmed.sc') file.
I can not find any reasonable data for that planet.

I recommend removing the planet. This can be done with this script.

// Filename: RemoveKOI-4034.02.sc
// Put in 'data\catalogs\planets'
//------------------------------------------------------------------------------

// For SE 0.980e and SE 0.990
Remove "KOI-4034.02" {ParentBody "Kepler-1543"}

// For SE 0.980
Remove "KOI-4034.02" {ParentBody "KOI-4034"}
//-----------------------------------------------------------------------------
 
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COMMUNITY ADDON - Catalog Fixes for SE

08 Oct 2017 01:52

VY Canis Majoris - Correction script
// Filename: VY_CMa.sc

// Put this script in 'data\catalogs\stars'

// https://en.wikipedia.org/wiki/VY_Canis_Majoris
//------------------------------------------------------------------------------

Star    "VY CMa/HD 58061/HIP 35793"
{
    RA      07 22 58.32877
    Dec     -25 46 03.2355
    Dist    1170
    
    Class       "M4 II"
    RadSol      1420        // 1420 ± 120
    MassSol     17          // 17 ± 8 - other sources say 30 - 40
    
    AppMagn     6.5         // 6.5 - 9.6
    
    Teff        3490
}

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

VY_CMa.sc
(626 Bytes) Downloaded 20 times
(Put it in the folder 'data\catalogs\stars'. (If the folder does not exist, create it.) )
 
AlexanderVB
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COMMUNITY ADDON - Catalog Fixes for SE

05 Dec 2017 03:14

In Space Engine, Rigel Ba and Rigel Bb orbit each other with an orbital period of 9.86 YEARS.
In Wikipedia, they are supposed to orbit each other with an orbital period of 9.86 DAYS.
Fixing it should be easy. Just divide 9.86 with 365.24218985 and overwrite the period value with that.
 
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COMMUNITY ADDON - Catalog Fixes for SE

05 Dec 2017 12:00

AlexanderVB wrote:
Source of the post In Space Engine, Rigel Ba and Rigel Bb orbit each other with an orbital period of 9.86 YEARS.
In Wikipedia, they are supposed to orbit each other with an orbital period of 9.86 DAYS.
Fixing it should be easy. Just divide 9.86 with 365.24218985 and overwrite the period value with that.

Fixing the catalog is much more easy: change Period to PeriodDays.
Hm, it appears that Wikipedia says that Rigel B is a fairly wide binary with period of 63 years, known from XIX century, while one of its components Rigel Bb is a itself a spectroscopic binary with period of 9.86 days. The SIMBAD database doesn't list Rigel as a quadruple system though...

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