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SpaceEngineer
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COMMUNITY ADDON - Catalog Fixes for SE

24 Nov 2016 09:31

As many of you may know, SE's star catalog has some errors in it, such as errors in spectral class, magnitude, and missing data. The goals here are to 1) identify stars which have errors, and 2) make new catalog scripts to fix these errors.

For this you will have to overwrite the existing HIP star and remake the entire system for your script. You can use the Remove parameter in the script to do this. Keep in mind that you can also update the physical parameters of the stars in the system while you make it, including things like age.

For a tutorial on how to add stars, look here. Pay close attention to the need to use two catalogs per star system in some cases.

To expedite the process of building this catalog and adding it into SE, you should try to resolve all errors with your systems before posting them. When you finish your script for a star system (or many of them) you may post it in this thread.

Feel free to just post the name of a star that has an error even if you don't want to make a catalog fix. A list of stars that need fixing will make things a lot easier on the scripters.

Good luck!
 
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Mosfet
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COMMUNITY ADDON - Catalog Fixes for SE

02 Dec 2016 08:15

Since IAU decided to choose for some stars an official name I checked and for some of them there wasn't the official one. the code is:
Star "Merga/HR 5533/h Boo/38 Boo/HIP 72487/HD 130945"
{
    RA        14 49 18.7
    Dec        46 06 58
    Dist    46.8603535
    Class    "F7 IV"
    AppMagn    5.75781242
}

Star "ZET Eri/13 Eri/HIP 15197/HD 20320/Zibal/HR 984"
{
    RA        3 15 50.02656
    Dec        -08 49 11.0220
    Dist    36.7917547
    Class    "A5 V"
    AppMagn    4.79687524
}

Star "RHO Pup/15 Pup/HIP 39757/HD 67523/Tureis/HR 3185"
{
    RA        8.12575032
    Dec        -24.3044355
    Dist    19.2344693
    Class    "F2 II"
    AppMagn    2.82812515
    FeH        0.35
}

Star "BET2 Sgr/HIP 95294/HD 181623/Arkab Posterior/HR 7343"
{
    RA        19 23 13.2
    Dec        -44 47 59
    Dist    42.5170052
    Class    "F2 III"
    AppMagn    4.27
}


Other stars have the same issue, like:
[ALF] Centauri > Rigil Kentaurus
[ALF] Piscis > Alrescha
[ALF] Trianguli > Mothallah
[IOT] Ursae Majoris > Talitha
[BET]1 Scorpii > Acrab

I noticed that there are issues in the search catalog in two cases:
Asterope, from the Pleaides open cluster, it's also an asteroid. But when you select the star, you're directed to the asteroid.
Atlas, also known as 27 Tauri, it's also a moon of Saturn. Same issue here.
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SpaceEngineer
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COMMUNITY ADDON - Catalog Fixes for SE

03 Dec 2016 02:58

Mosfet wrote:
Source of the post Other stars have the same issue, like:
[ALF] Centauri > Rigil Kentaurus
[ALF] Piscis > Alrescha
[ALF] Trianguli > Mothallah
[IOT] Ursae Majoris > Talitha
[BET]1 Scorpii > Acrab

Is is alternate names? Looks like a bit changed writing of names which are already in SE (Rigel Kentaurus -> Rigil Kentaurus)
 
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Mosfet
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COMMUNITY ADDON - Catalog Fixes for SE

03 Dec 2016 05:19

https://www.iau.org/public/themes/naming_stars/
Well, they are, actually. As my understanding, they took all the names in literature, I mean quite a lot, and they have chosen an "official one", among existing traditional names.
For some stars there are dozens, and I searched alfa Centauri myself, because I've seen "Rigil Kentaurus" in books or maps.
Apparently they are both used. I thought before "who cares?", but since now is somewhat official, I guess it could be used more in literature, so it could make sense to have the official name in SE among others.
Alrescha it's another naming nightmare, by the way :)
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XBrain130
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COMMUNITY ADDON - Catalog Fixes for SE

28 Feb 2017 05:28

2MASS J21265040-8140293, an exoplanet orbiting around the red dwarf TYC 9486-927-1 (2MASS J21252752-8138278).

In SE, there are two bodies with the exoplanet's name, the parent red dwarf (which has the exoplanet as b), and a brown dwarf 33 ly behind it.
Attachments
scr00041.png
 
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JackDole
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COMMUNITY ADDON - Catalog Fixes for SE

28 Feb 2017 07:23

XBrain130,
these are two different objects:
'2MASS J21265040-8140293' is the brown dwarf, '2MASS J21252752-8138278' is the Red Dwarf.

But:
The brown dwarf is, according to Wikipedia, the Exoplanet who orbits 'TYC 9486-927-1'.

That means the distance of 33 light years is wrong and the brown dwarf should be removed.

This can be done with this 'script':
// -*- coding: utf-8 -*-
// Name: Remove_2MASS_J21265040-8140293.sc

// Put in 'addons\catalogs\stars'

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

RemoveStar  "2MASS 21265-81402/2MASS J21265040-8140293"

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

Or you can use this .pak file. It retains the known names for the planet / brown dwarf.
TYC_9486-927-1.pak
(1.46 KiB) Downloaded 19 times
 
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SpaceEngineer
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COMMUNITY ADDON - Catalog Fixes for SE

08 Mar 2017 03:51

JackDole wrote:
Source of the post // -*- coding: utf-8 -*-

By the way, SE doesn't use unicode. Coding must be CP-1252.
 
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Mosfet
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COMMUNITY ADDON - Catalog Fixes for SE

21 Mar 2017 17:57

It appears that asteroid Chiron, a Centaur, could have rings too like Chariklo, at least according to a reinterpretation of previous measurements in which the presence of twin cometary jets was assumed.
It turns out that a pair of rings quite similar to those of Chariklo could be present instead, so what was considered a peculiarity could be a trend among Centaurs. By using HarbingerDawn's textures for Chariklo, we could put a ring on it:
Asteroid    "Chiron/(2060) Chiron"
{
    ParentBody     "Sol"
    AsterType      "Centaur"
    Radius          117   // 144
    RotationPeriod  5.918
    Albedo          0.075 // 0.048
    AbsMagn         6.5   // 6.2
    SlopeParam      0.15
    Orbit
    {
        Epoch            2456401
        MeanMotion       0.0195367
        SemiMajorAxis    13.6532
        Eccentricity     0.380366
        Inclination      6.92945
        AscendingNode    209.356
        ArgOfPericenter  339.33
        MeanAnomaly      122.844
    }
    Rings
    {  // Texture by HarbingerDawn
        Texture     "Chariklo-rings.*"
        InnerRadius        324
        OuterRadius        346
        // 7 and 3km, 12km gap
    }
}
"Time is illusion. Lunchtime doubly so". Douglas N. Adams
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Mosfet
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COMMUNITY ADDON - Catalog Fixes for SE

12 Apr 2017 17:54

As elsewhere noted, asteroid (10) Hygiea in SolarSys.sc has diameter value placed instead of radius, so the script should be:
Asteroid    "Hygiea/(10) Hygiea"
{
    ParentBody     "Sol"
    Radius          215.5
    Mass            1.45124e-5
    RotationPeriod  27.623
    Albedo          0.01 // fake
    AlbedoBond      0.01 // fake
    Albedo          0.0717
    AbsMagn         5.43
    SlopeParam      0.15
    Orbit
    {
        RefPlane       "Ecliptic"
        Epoch           2456401
        MeanMotion      0.177388
        SemiMajorAxis   3.13703
        Eccentricity    0.116109
        Inclination     3.8419
        AscendingNode   283.418
        ArgOfPericenter 312.758
        MeanAnomaly     121.957
    }
}


Place the script under addons/catalogs/planets/, or download the pak file to be simply placed under addons/.
Attachments
HygieaFix.pak
(785 Bytes) Downloaded 11 times
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XBrain130
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COMMUNITY ADDON - Catalog Fixes for SE

21 Apr 2017 07:42

PH1 b (aka Kepler 64 b) is an exoplanet in a quadruple system that orbits the AB pair, but in SE it orbits the whole system's barycenter instead.
 
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SpaceEngineer
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COMMUNITY ADDON - Catalog Fixes for SE

22 Apr 2017 05:18

All fixes added.

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