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Adding Nearby Known Stars
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| Amwhere | Date: Monday, 26.12.2011, 00:30 | Message # 1 |
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Astronaut
Group: Users
United States
Messages: 62
Status: Offline
| I got annoyed that some of the stars near the solar system aren't in SE... so I added them.
Nothing fancy - just place the files in the right places and at them to the universe.cfg.
Edited by Amwhere - Monday, 26.12.2011, 00:33 |
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| SpaceEngineer | Date: Monday, 26.12.2011, 10:10 | Message # 2 |
 Author of Space Engine
Group: Administrators
Russian Federation
Messages: 4800
Status: Offline
| Good addon, I'll check it later.
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| HarbingerDawn | Date: Monday, 26.12.2011, 13:28 | Message # 3 |
 Cosmic Curator
Group: Administrators
United States
Messages: 8717
Status: Offline
| Nice addon Amwhere, thanks for putting in the work to make it 
I noticed that Luyten 789-6 was somewhat incorrect; I've posted my own script (which I adapted from Celestia) which may also be incorrect in some details (mainly star names and orbital inclination):
"Star" script:Code StarBarycenter "Gliese 866/Luyten 789-6"
{
RA 22 38 33
Dec -15 18 02
Dist 3.45418
}
"Planet" script:Code Barycenter "Gliese 866 A/Luyten 789-6 A"
{
ParentBody "Gliese 866"
Lum 0.00007216
Mass 0.2
Orbit
{
Period 2.2506
SemiMajorAxis 0.42
Eccentricity 0.437
Inclination 96.2
AscendingNode 133.5
ArgOfPericenter 76.4
MeanAnomaly 241.7
}
}
Star "EZ Aqr/Gliese 866 Aa/Luyten 789-6 Aa"
{
ParentBody "Gliese 866 A"
Class "M5 V"
AppMagn 13.03
Mass 0.105
Orbit
{
Period 0.0104
SemiMajorAxis 0.013
Inclination 96
AscendingNode 133
MeanAnomaly 180
}
}
Star "Gliese 866 Ab/Luyten 789-6 Ab"
{
ParentBody "Gliese 866 A"
Class "M6 V"
AppMagn 15.07
Mass 0.095
Orbit
{
Period 0.0104
SemiMajorAxis 0.014
Inclination 96
AscendingNode 133
ArgOfPericenter 180
}
}
Star "Gliese 866 B/Luyten 789-6 B"
{
ParentBody "Gliese 866"
Class "M5 V"
AppMagn 13.27
Mass 0.106
Orbit
{
Period 2.2506
SemiMajorAxis 0.78
Eccentricity 0.437
Inclination 96.2
AscendingNode 133.5
ArgOfPericenter 256.4
MeanAnomaly 241.7
}
}
This will have the stars orbit their barycenters properly. The star names differ from their accepted values in mine, though I personally prefer Celestia's names over the real ones in this case. I believe the orbit inclination of AB is also wrong in mine (yours is correct, 112.4°).
I think by combining our scripts it will be 100% accurate. Test it out and see what you think.
All forum users, please read this!
My SE mods and addons
Phenom II X6 1090T 3.2 GHz, 16 GB DDR3 RAM, GTX 970 3584 MB VRAM
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| miros_0571 | Date: Monday, 26.12.2011, 16:04 | Message # 4 |
 Astronaut
Group: Banned
Ukraine
Messages: 54
Status: Offline
| New update:
Planet EZ Aquarii AC1 doesn't not exist.
Fixed all names.
MS Windows 7 Ultimate 32-bit SP1
Intel Pentium 4 CPU 3.20GHz, 2,0GB RAM, NVIDIA GeForce GTX 260
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| miros_0571 | Date: Monday, 26.12.2011, 16:24 | Message # 5 |
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Astronaut
Group: Banned
Ukraine
Messages: 54
Status: Offline
| SCR 1845-6357B is not a planet, but it's a brown dwarf class "T6".
http://en.wikipedia.org/wiki/SCR_1845-6357
http://en.wikipedia.org/wiki/List_of_nearest_stars
MS Windows 7 Ultimate 32-bit SP1
Intel Pentium 4 CPU 3.20GHz, 2,0GB RAM, NVIDIA GeForce GTX 260
Edited by miros_0571 - Monday, 26.12.2011, 16:24 |
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| Amwhere | Date: Monday, 26.12.2011, 19:38 | Message # 6 |
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Astronaut
Group: Users
United States
Messages: 62
Status: Offline
| About SCR 1845 -
http://exep.jpl.nasa.gov/atlas/atlas_profile.cfm?Star=359
And EZ Aquarii.... Alpha Centauri has no confirmed planets either, yet...
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| miros_0571 | Date: Monday, 26.12.2011, 19:55 | Message # 7 |
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Astronaut
Group: Banned
Ukraine
Messages: 54
Status: Offline
| New update:
"SCR 1845-6357B" is now changed planet to star.
Now addon is ready.
MS Windows 7 Ultimate 32-bit SP1
Intel Pentium 4 CPU 3.20GHz, 2,0GB RAM, NVIDIA GeForce GTX 260
Edited by miros_0571 - Monday, 26.12.2011, 19:58 |
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| Amwhere | Date: Monday, 26.12.2011, 20:07 | Message # 8 |
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Astronaut
Group: Users
United States
Messages: 62
Status: Offline
| Updated EZ Aquarii -
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| HarbingerDawn | Date: Monday, 26.12.2011, 20:49 | Message # 9 |
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Cosmic Curator
Group: Administrators
United States
Messages: 8717
Status: Offline
| EZ Aqu is still wrong. It is missing a barycenter and the period of star B's orbit is incorrect; it should be 2.2506 years, not 3.8 days.
All forum users, please read this!
My SE mods and addons
Phenom II X6 1090T 3.2 GHz, 16 GB DDR3 RAM, GTX 970 3584 MB VRAM
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| Amwhere | Date: Monday, 26.12.2011, 21:36 | Message # 10 |
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Astronaut
Group: Users
United States
Messages: 62
Status: Offline
| It does have a barycenter -
Code
Barycenter "EZ Aquarii Barycenter"
{
ParentBody "EZ Aquarii"
Lum 0.00007216
Mass 0.2
Orbit
{
Period 2.2506
SemiMajorAxis 0.42
Eccentricity 0.437
Inclination 112.4
AscendingNode 133.5
ArgOfPericenter 76.4
MeanAnomaly 241.7
}
}
As for the period... well, that's the pitfalls of copy and pasting.
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| HarbingerDawn | Date: Monday, 26.12.2011, 22:45 | Message # 11 |
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Cosmic Curator
Group: Administrators
United States
Messages: 8717
Status: Offline
| Gah, my bad, I wasn't paying attention 
The orbits of the AC barycenter and the B star are not on the same plane though (fix ascending node), and stars A and C are too far from each other (A should orbit at 0.013 AU from the barycenter; C at 0.014 AU). ArgOfPericenter and MeanAnomaly of B will also have to be changed to match with the AC barycenter (should have same anomaly and 180° different ArgOfPericen).
I think that's all that needs to be changed 
All forum users, please read this!
My SE mods and addons
Phenom II X6 1090T 3.2 GHz, 16 GB DDR3 RAM, GTX 970 3584 MB VRAM
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| SpaceEngineer | Date: Monday, 26.12.2011, 23:19 | Message # 12 |
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Author of Space Engine
Group: Administrators
Russian Federation
Messages: 4800
Status: Offline
| A year ago i download a CCDM catalog (Catalog of Components of Double and Multiple Stars), but still not had time to convert it into SE format. Maybe you guys can make it?
wiki
File format & download
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| Amwhere | Date: Monday, 26.12.2011, 23:51 | Message # 13 |
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Astronaut
Group: Users
United States
Messages: 62
Status: Offline
| Take 3!
(As for the catalog, I can at least look into it...)
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| miros_0571 | Date: Tuesday, 27.12.2011, 06:35 | Message # 14 |
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Astronaut
Group: Banned
Ukraine
Messages: 54
Status: Offline
| Amwhere I just fixed star SCR 1845-6357B and planet EZ Aquarii AC1 does not exist. Here's final addon.
MS Windows 7 Ultimate 32-bit SP1
Intel Pentium 4 CPU 3.20GHz, 2,0GB RAM, NVIDIA GeForce GTX 260
Edited by miros_0571 - Tuesday, 27.12.2011, 18:43 |
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| SpaceEngineer | Date: Wednesday, 28.12.2011, 10:12 | Message # 15 |
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Author of Space Engine
Group: Administrators
Russian Federation
Messages: 4800
Status: Offline
| So, when you finish this catalog, I'll add it to the download section of the site, and include it in the next SE version.
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