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harmonicGF3
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Work in Progress - Mars Satellites Addon

15 Sep 2021 00:39

Hello everyone, we already have wonderful addons for all satellites around Earth (thanks to Mosfet!). So inspired by that addon series, I thought it would be cool to have an addon pack for all active Mars orbiters!

Image


Initially goal is to include the above 8. Then we can expand to defunct ones and then even probes of all other planets. 
If I understood the process correctly, there are two steps -
-Find the orbital elements around the orbiting planet. 
-Find/create 3d models

This is the result so far(only first five orbits, haven’t added models yet) :

Orbital Elements
For all the NASA probes, 
I used NASA horizons :  https://ssd.jpl.nasa.gov/horizons.cgi#top
I don’t know if the procedure I’m using is correct, would really appreciate if someone takes a look : Sorry for the robovoice, something is wrong with my mic!
[spoiler][/font]
Im using the starlink model by mosfet temporarily

Spacecraft "2001 Mars Odyssey"
{
    Model          "spacecraft/starlink2.sss"
    NoLighting     true
    ParentBody     "Mars"
    Radius         0.005
    Orbit
    {
    Epoch     2459470.500000000
    SemiMajorAxisKm    3.804825638151244E+03
    PeriodDays    8.247123034000406E-02
    MeanAnomaly    +2.671359404812213E+02
    ArgOfPericenter    2.647507108749190E+02
    Eccentricity    7.800466241880192E-03
    Inclination    9.303648630846963E+01
    AscendingNode    2.458432599208940E+02
    RefPlane "Equator"
    }
}

Spacecraft "Mars Express"
{
    Model          "spacecraft/starlink2.sss"
    NoLighting     true
    ParentBody     "Mars"
    Radius         0.005
    Orbit
    {
    Epoch     2459470.500000000
    SemiMajorAxisKm    8.816622223094781E+03
    PeriodDays    2.909066728059267E-01
    MeanAnomaly    +1.159532962125450E+02
    ArgOfPericenter    8.850124302639026E+01
    Eccentricity    5.722803295382805E-01
    Inclination    8.703557228206786E+01
    AscendingNode    1.566587940166173E+02
    RefPlane "Equator"

    }
}

Spacecraft "Mars Reconnaissance Orbiter"
{
    Model          "spacecraft/starlink2.sss"
    NoLighting     true
    ParentBody     "Mars"
    Radius         0.005
    Orbit
    {
       
    Epoch     2459470.500000000
    SemiMajorAxisKm    3.656402300141111E+03
    PeriodDays    7.769289326216809E-02
    MeanAnomaly    +2.100756546089188E+02
    ArgOfPericenter    2.815948883696823E+02
    Eccentricity    9.050006486433003E-03
    Inclination    9.241127975856789E+01
    AscendingNode    1.736126156594644E+01
    RefPlane        "Equator"

    }
}

Spacecraft "Mars Orbiter Mission (Mangalyaan)"
{
    Model          "spacecraft/starlink2.sss"
    NoLighting     true
    ParentBody     "Mars"
    Radius         0.005
    Orbit
    {
    Epoch     2459470.500000000
    SemiMajorAxisKm    3.975242095536460E+04
    PeriodDays    2.785131521643801E+00
    MeanAnomaly    +2.389013043061660E+02
    ArgOfPericenter    1.718757535681395E+02
    Eccentricity    9.009581874687916E-01
    Inclination    1.538160153039837E+02
    AscendingNode    2.520703732771788E+02
    RefPlane "Equator"
    }
}

Spacecraft "MAVEN"
{
    Model          "spacecraft/starlink2.sss"
    NoLighting     true
    ParentBody     "Mars"
    Radius         0.005
    Orbit
    {
    Epoch     2459470.500000000
    SemiMajorAxisKm    5.676638613432664E+03
    PeriodDays    1.502924641523433E-01
    MeanAnomaly    +1.842196155038370E+02
    ArgOfPericenter    3.187312489201630E+01
    Eccentricity    3.657911727466540E-01
    Inclination    7.486214508328472E+01
    AscendingNode    2.607542977538328E+02
    RefPlane "Equator"
    }
}




[/spoiler]

So far, this is what I have found for Tiawen-1
Image
https://en.wikipedia.org/wiki/Tianwen-1#Orbital_elements


ExoMars - Thanks to ChrisGnam on reddit :https://www.reddit.com/r/space/comments/pmxnod/all_space_questions_thread_for_week_of_september/hcowy2r/?context=3 

Yet to find values for Emirates Mars mission. 


3d models - needs some work to convert formats. I am currently checking Harbinger Dawn’s tutorial for this. 
If anyone wants to try converting, here are some links I found so far : 
2001 Mars Odyssey -https://nasa3d.arc.nasa.gov/detail/eoss-marsodyssey
Mars Express - https://sketchfab.com/3d-models/mars-ex ... cb3ee40a89
(have to check license)
Mars Reconnaissance Orbiter-https://nasa3d.arc.nasa.gov/search/Mars%20Reconnaissance%20Orbiter/
Mars Orbiter Mission -https://sketchfab.com/3d-models/mars-orbiter-mission-mangalyana-by-isro-72a4112ce14d4ce3887a8a149f5589b7(have to check license)
Maven -https://nasa3d.arc.nasa.gov/detail/maven-jpl
ExoMars Trace Gas Orbiter -https://solarsystem.nasa.gov/resources/2350/trace-gas-orbiter-3d-model/
Emirates Mars Mission - ???
Taiwen 1 - ???
Discord : supersonic71#4504

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