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COMMUNITY ADDON - Catalog Fixes for SE

Posted: 05 Aug 2019 13:16
by SpaceEngineer
Wtf, they probably changed the naming convention. Original asteroids database in SE (Asteroids.sc, Asteroids-small.sc etc) is made by processing a catalog file downloaded from MPC. This was many years ago though. Maybe all asteroids in SE should be updated to the new naming?

COMMUNITY ADDON - Catalog Fixes for SE

Posted: 05 Aug 2019 14:17
by Mosfet
I can confirm that MPC is still using the naming convention we are using now, in fact my data came from their database.

COMMUNITY ADDON - Catalog Fixes for SE

Posted: 05 Aug 2019 23:47
by JackDole
It seems that both naming conventions are used.
That's why I used the first name without parentheses and the second name with parentheses. But only if I found the name in the sources like that. For example, Wikipedia. If I found only the first spelling of an asteroid, then not. (That may be inconsistent.)
Maybe this spelling should be used:
"Name/Number Name/(Number) Name/<other designations>"

COMMUNITY ADDON - Catalog Fixes for SE

Posted: 06 Aug 2019 03:49
by SpaceEngineer
JackDole wrote:
Source of the post Maybe this spelling should be used:

Seems good. But all asteroids what are already in SE must be updated. Maybe someone can make a Python script?

COMMUNITY ADDON - Catalog Fixes for SE

Posted: 06 Aug 2019 04:24
by Mosfet
A simple regex in notepad++ like find
/\((\d*)\)(\s\w*)
and substitute with
/\1\2/\(\1\)\2
does the trick.

edit:
Oops, I forgot there are catalogued asteroids without an official name like 2001 FA70
also, "Lempo/(47171) Lempo/1999 TC36 A1/(47171) 1999 TC36 A1"

COMMUNITY ADDON - Catalog Fixes for SE

Posted: 23 Sep 2019 08:59
by Mosfet
There's a small error in the name of M43 nebula, De Mairan's nebula is written "De Marain's". This is the code for correction:
Remove "De Marains Nebula" { ParentBody "Milky Way" }

Nebula    "De Mairan's Nebula/M 43/NGC 1982"
{
    Galaxy  "Milky Way"
    Type    "Diffuse"
    RA       5 35 29.37
    Dec     -5 15 22.68
    Dist     428
    Radius   0.4
    AppMagn  9.0
    NoModel  true    // this nebula is implemented as a part of M 42 model

COMMUNITY ADDON - Catalog Fixes for SE

Posted: 23 Sep 2019 09:37
by SpaceEngineer
I added fix to default catalog, thanks.

COMMUNITY ADDON - Catalog Fixes for SE

Posted: 11 Jan 2020 14:24
by JackDole
2020 AV2
The first asteroid that orbits the sun within the Venus orbit.
https://www.cnet.com/news/scientists-ma ... ver-found/
// -*- coding: utf-8 -*-
// Filename: 2020_AV2.sc
// JackDole (Gerhard H. Quast) 2020.01.11 09:18:51

// https://ssd.jpl.nasa.gov/sbdb.cgi
//------------------------------------------------------------------------------

LogLevel 1

Asteroid "2020 AV2/ZTF09k5"
{
    ParentBody  "Sol"
    Class       "Asteroid"
    AsterType   "NEO"           // "Vatira"
    
    Radius      1               // Diameter >1; ~2
    
    DiscDate    "2020.01.04"
    
    AbsMagn     16.26
    
    Orbit
    {
        RefPlane        "Ecliptic"
        Epoch           2458855.5
        Eccentricity    0.1777778912664998
        SemiMajorAxis   0.5551810997501618
        PericenterDist  0.4564821745655618
        Inclination     15.89340339039869
        AscendingNode   6.699391779201092
        ArgOfPericen    187.3159335126699
        MeanAnomaly     237.2446776599684
        Period          0.41
        MeanMotion      2.382605086701571
        //aphelion distance   0.6538800249347618
    }
}

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

scr00610.jpg

COMMUNITY ADDON - Catalog Fixes for SE

Posted: 08 Feb 2020 01:24
by JackDole
The Ross 752/Wolf 1055 system has an additional star in the center of the system.
scr00661.jpg

This is because the star has more names in 'Hipparchos.csv' than in the newer 'BrownDwarfs-bin.sc'. (Discovered by 'Platinum Hero' on Steam.)

I made a fix for it.
// -*- coding: utf-8 -*-
// Filename: FixWolf1055.sc

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

LogLevel 1

RemoveStar  "Ross 652/Wolf 1055/V1428 Aql/Gliese 752/HIP 94761/HD 180617"

StarBarycenter "Wolf 1055/Gliese 752/HIP 94761/HD 180617"
{
    RA      19 16 55.3
    Dec    +05 10  8
    Dist    5.9116
    AppMagn 9.115
    Class  "M2.5V"
}

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

scr00662.jpg

FixWolf1055.sc
(486 Bytes) Downloaded 383 times
(Put the file in 'addons\catalogs\stars'.)

COMMUNITY ADDON - Catalog Fixes for SE

Posted: 06 Apr 2021 03:28
by miniluv73
Currently in SpaceEngine, Mars' moon Deimos has a density of 16.386 g/cm3. On closer inspection, this appears to be an error with the asteroid's mass.
scr00079.jpg

I have created a small fix to decrease its mass and bring its density closer to it's real value.
DeimosFix.sc
(2 KiB) Downloaded 226 times

COMMUNITY ADDON - Catalog Fixes for SE

Posted: 06 Apr 2021 04:27
by miniluv73
scr00079.jpg

And as a side note, when making a planetary system, you can use the System Chart to see if everything has accurate properties, such as temperature, density, and system architecture.

COMMUNITY ADDON - Catalog Fixes for SE

Posted: 27 Jun 2021 11:21
by N0B0DY
Gliese 688 is a double binary located ~35 LYs located in the constellation of ophiuchus. The A component is a K class orange main sequence star with an estimated radius ~84% of sol. In SE however due to a typo its radius is 840% of sol. Here is the corrected catalog file - to be extracted inside addons directory. However I don't know why but the star now appears much brighter with a much greater halo/corona in the preview icon as presented in star system browser. I don;t know as to why this is happening. Any help would be greatly appreciated as I am no expert in this. Thank you for your understanding regarding this far from perfect correction.

COMMUNITY ADDON - Catalog Fixes for SE

Posted: 22 Jul 2021 09:13
by Khorrah
The Star HIP 51436/HD90983 appears to be a "K5 V" type star while it´s brightness is beyond 21000 times the sun, this star would be a Orange Giant class "K5 III", I changed the star class and included the exact same values that Space Engine did, except the class, the simulator regenerated the temperature, size and mass and also I think the brightness too.

The temperature (between 3500K-5000K) of the star and the solar radius vary between 372.73 to 869.79 times of the sun according to this page:


https://www.universeguide.com/star/51452/hip51452

COMMUNITY ADDON - Catalog Fixes for SE

Posted: 22 Jul 2021 22:29
by Q_5EB
EpIC