Spacecrafts for Celestia

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toutatis
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Post #341by toutatis » 01.07.2018, 13:02

and now I present the project GRAIL for Celestia...

Added after 5 minutes 12 seconds:
The Gravity Recovery and Interior Laboratory (GRAIL) was an American lunar science mission in NASA's Discovery Program which used high-quality gravitational field mapping of the Moon to determine its interior structure. The two small spacecraft GRAIL A (Ebb) and GRAIL B (Flow) were launched on 10 September 2011 aboard a single launch vehicle: the most-powerful configuration of a Delta II, the 7920H-10. GRAIL A separated from the rocket about nine minutes after launch, GRAIL B followed about eight minutes later. They arrived at their orbits around the Moon 25 hours apart. The first probe entered orbit on 31 December 2011 and the second followed on 1 January 2012. The two spacecraft impacted the Lunar surface on December 17, 2012... https://en.wikipedia.org/wiki/GRAIL
Attachments
GRAIL.7z
(2.74 MiB) Downloaded 13 times
capture-20180701-183821.jpg
capture-20180701-183547.jpg
capture-20180701-183033.jpg
capture-20180701-181617.jpg

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Post #342by toutatis » 01.07.2018, 13:33

Can I ask you, dear members of this forum... Why the Moon without shadow? :insane:

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Croc M
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Post #343by Croc » 01.07.2018, 13:43

Thank you for the interesting information about the exploration of the Moon by the Ebb and Flow devices. Models are made perfectly !!!
:clap: :clap: :clap: :smile: :smile: :smile:

Added after 19 minutes 16 seconds:
Can I ask you, dear members of this forum... Why the Moon without shadow? :insane:

Image

Adjust the illumination [Ambient Light Level]... :smile:

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Post #344by gironde » 01.07.2018, 15:22

The model is very well.

But the orbit (red)… is not around the Moon. :sad:
Attachments
Grail orbit.jpg

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Post #345by toutatis » 01.07.2018, 15:47

But the orbit (red)… is not around the Moon

Because it is Sampled Trajectory... lol
Gironde... do you see that for the first time...??? :biggrin:

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Post #346by toutatis » 01.07.2018, 15:52

I will change step in XYZV-files for GRAIL... currently step is 20 mins... but I will change to 5 mins... otherwise these spacecrafts will crash before real endind date... lol too low orbita....

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Post #347by toutatis » 01.07.2018, 15:57

Adjust the illumination [Ambient Light Level]... :smile:

Croc... I am not about it... See... when Spacecraft at the night side of the Moon... it still continue to reflect the sun light... that is very interesting...

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Post #348by gironde » 01.07.2018, 17:06

Code: Select all

for Grail, I prefer this orbit obtained by:

"GRAIL-A(Ebb)" "Sol/Earth/Moon"
{
   Class    "spacecraft"
   Mesh "grail-a.cmod"
   Radius   0.0015
   
   Beginning   "2012 08 30" # launch,  wake up from the satellite 30-08-2012
   Ending   "2012 12 16" # Impact date December 17, 2012, 22:28:51 UTC

   EllipticalOrbit #
   {
   Epoch         2456230.50 # 30-10-2012 04-02-2012 ?
   Period         0.07673501089679145
   SemiMajorAxis   1760.758052604271
   Eccentricity   0.004771242459779582
   Inclination      89.59983804382647
   AscendingNode   115.2294647611078
   ArgOfPericenter   152.9789886943472
   MeanAnomaly      94.50137164555893
   }
}

"GRAIL-B(Flow)" "Sol/Earth/Moon"
{
   Class    "spacecraft"
   Mesh "grail-b.cmod"
   Radius   0.0015
   
   Beginning   "2012 08 30" # launch, wake up from the satellite 30-08-2012
   Ending   "2012 12 16" # Impact date December 17, 2012, 22:29:21 UTC

   EllipticalOrbit #
   {
   Epoch         2456230.50 # 30-10-2012
   Period         0.07673681928438110
   SemiMajorAxis   1760.785715948266
   Eccentricity   0.004807627121886406
   Inclination      89.60042710505637
   AscendingNode   115.2190714991370
   ArgOfPericenter   153.3239299934955
   MeanAnomaly      91.92928566236402
   }
}

It is truly the orbit of the satellite around the Moon which is displayed and not the curve drawn in relation to its absolute spatial position unrelated to the Moon.

:hi:
Attachments
Grail A Lunar Orbit.jpg

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Post #349by toutatis » 01.07.2018, 17:25

It is truly the orbit of the satellite around the Moon which is displayed and not the curve drawn in relation to its absolute spatial position unrelated to the Moon.

that is funny... the orbit of GRAIL was changed several times during mission....

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Post #350by toutatis » 01.07.2018, 17:29

Watch Gironde... but your orbit can show only VERY SMALL part of GRAIL mission...
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GRAIL-transit-Earth-Moon.png

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Post #351by gironde » 01.07.2018, 17:34

Grail-A timeline :
10-09-2011 : launch
12-2011 : Lagrange L1 Earth-Moon
31-12-2011 : approach Moon
31-12-2011 to 02-2012 : modified orbit
08-03-2012 : beginning of mission for 82 days
alt 15km, alt 50km
29-05-2012 : ending of principal mission
30-08-2012 : new mission (alt 23km)
17-12-2012 : ending, crash to the Moon

periods with the same orbit are short-lived.

Yes my orbit in ssc is a very small part but it seems to me more just.
It is necessary to regulate the Orbit Center with the files .xyzv otherwise it turns around the Sun.
To have longer periods, you have to program a TimeLine with several different periods and orbits.

:hi:

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Post #352by toutatis » 01.07.2018, 17:45

Gironde... You need to watch Cassini spacecraft trajectory in Celestia... or MESSENGER... learn it better...

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Post #353by gironde » 01.07.2018, 18:43

Cassini has an OrbitFrame centered on the Sun with use of .xyz, okay.

But the first line of the script says it's in orbit around Saturn
"Cassini" "Sol / Saturn".


There are 3 phases in the Timeline at different dates for 3 different orbits.



Messenger also uses .xyz but is in orbit around Mercury
"Messenger" "Sol / Mercury"

You put everything around "Sol"
so your satellites orbit around "Sol"


:hi:

Added after 17 minutes 25 seconds:
Messenger uses only one .xyz file between 2004 and 2015 and even there, the orbit is drawn around the Sun and never around Mercury. This is where we see the limit of .xyz files

The curve drawn around the Sun is indeed all spatial positions but is not the orbit around the Orbit Center.

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Post #354by toutatis » 01.07.2018, 20:56

Okay Gironde... You can stay with your orbit... but I will stay with my opinion... :wink:

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Post #355by gironde » 02.07.2018, 06:48

No problem, Toutatis, and bravo for your excellent modeling work !


:smile:

:hi:

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Post #356by toutatis » 02.07.2018, 08:52

Just prepared SSC-file for GRAIL... there I used timeline which include Sampled Orbits in the start and the end of mission... and also Ecliptical Orbits... now I testing it... Central body for all of these orbits is Moon...


Added after 56 seconds:
No problem, Toutatis, and bravo for your excellent modeling work !
Thanks Gironde... :smile: :smile: :smile:

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Post #357by gironde » 02.07.2018, 11:10

Designation : DSP-22
Number in the catalog of space objects: 28158
COSPAR ID: 2004-004-A
Name in the catalog of space objects: USA 176
Satellite details
Orbit: 35,741 x 35,753 km, 8.1 °
category: military observatory
Nationality / organization of origin: United States
Intrinsic brightness (Magnitude): ?
launching Date (UTC): Saturday, February 14, 2004 18:50
Launch site: Cape Canaveral Air Force Station, United States
Launcher: Titan 402B / IUS

it is a satellite of detection and military observation but it has also been used for civil observations.

I can not put some textures on some faces, so I'll be able to do it with the available textures and the .dae and .3ds files that have been used to release a cmod.
The file size is due to the textures. Some will be useless in the end.

:hi:
Attachments
DSP-22.jpg
DSP 22 - Defense Support Program Block-5 176.zip
(24.5 MiB) Downloaded 6 times

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Post #358by toutatis » 02.07.2018, 11:28

GRAIL with modified orbit... added still 2 xyzv-files...

Code: Select all

"GRAIL-A(Ebb)" "Sol/Earth/Moon"
{
    Class    "spacecraft"
   Mesh "grail-a.cmod"
   Radius   0.0015

Timeline
[
    {
   Beginning   "2011 09 10 13:10"
   Ending   2455928.5  # 2012 Jan 02 00:00
   SampledTrajectory
   {
      Source   "grail-a.xyzv"
      DoublePrecision   true
      Interpolation   "cubic"
   }
   BodyFrame
   {
      TwoVector
      {
         Center   "Sol/Earth/Moon/GRAIL-A(Ebb)"
         Primary
         {
            Axis   "-z"
            RelativePosition
            {
               Observer   "Sol/Earth/Moon/GRAIL-A(Ebb)"
               Target   "Sol"
            }
         }
         Secondary
         {
            Axis   "y"
            RelativeVelocity
            {
               Observer   "Sol/Earth/Moon/GRAIL-A(Ebb)"
               Target   "Sol/Earth"
            }
         }
      }
   }
   FixedRotation
   {
      Period   0.0
   }   
}
    {
   Ending  2455987.5  #  2012 Mar 01 00:00
   OrbitFrame
   {
      EclipticJ2000   {Center "Sol/Earth/Moon"}
   }
   EllipticalOrbit
   {
      Epoch   2455928.5  # 2012 Jan 02 00:00
      Period   0.4764834279979402
      SemiMajorAxis   5948.432131563661
      Eccentricity   0.6924146547374508
      Inclination   88.27157197861658
      AscendingNode   118.978766816641
      ArgOfPericenter   356.9882234966317
      MeanAnomaly   109.2409392047193
   }
   BodyFrame
   {
      TwoVector
      {
         Center   "Sol/Earth/Moon/GRAIL-A(Ebb)"
         Primary
         {
            Axis   "-z"
            RelativePosition
            {
               Observer   "Sol/Earth/Moon/GRAIL-A(Ebb)"
               Target   "Sol"
            }
         }
         Secondary
         {
            Axis   "y"
            RelativeVelocity
            {
               Observer   "Sol/Earth/Moon/GRAIL-A(Ebb)"
               Target   "Sol/Earth"
            }
         }
      }
   }
   FixedRotation
   {
      Period   0.0
   }   
}
    {
    Ending   2456076.5  # 2012 May 29 00:00
   OrbitFrame
   {
      EclipticJ2000   {Center "Sol/Earth/Moon"}
   }
   EllipticalOrbit
   {
      Epoch   2455987.5  # 2012 Mar 01 00:00
      Period   0.07883396109724304
      SemiMajorAxis   1792.721703634708
      Eccentricity   0.01710133334446178
      Inclination   90.06810582250156
      AscendingNode   118.4533517003967
      ArgOfPericenter   177.2661887477396
      MeanAnomaly   50.21593309775926
   }
   BodyFrame
   {
      TwoVector
      {
         Center   "Sol/Earth/Moon/GRAIL-A(Ebb)"
         Primary
         {
            Axis   "-z"
            RelativePosition
            {
               Observer   "Sol/Earth/Moon/GRAIL-A(Ebb)"
               Target   "Sol"
            }
         }
         Secondary
         {
            Axis   "y"
            RelativeVelocity
            {
               Observer   "Sol/Earth/Moon/GRAIL-A(Ebb)"
               Target   "Sol/Earth"
            }
         }
      }
   }
   FixedRotation
   {
      Period   0.0
   }   
}
    {
   Ending  2456169.5  # 2012 Aug 30 00:00
   OrbitFrame
   {
      EclipticJ2000   {Center "Sol/Earth/Moon"}
   }
   EllipticalOrbit
   {
      Epoch   2456076.5  # 2012 May 29 00:00
      Period   0.078820329650388
      SemiMajorAxis   1792.515040629732
      Eccentricity   0.01871946854820806
      Inclination   90.31650960495885
      AscendingNode   117.330938345788
      ArgOfPericenter   343.615030837698
      MeanAnomaly   142.6507686350161
   }
   BodyFrame
   {
      TwoVector
      {
         Center   "Sol/Earth/Moon/GRAIL-A(Ebb)"
         Primary
         {
            Axis   "-z"
            RelativePosition
            {
               Observer   "Sol/Earth/Moon/GRAIL-A(Ebb)"
               Target   "Sol"
            }
         }
         Secondary
         {
            Axis   "y"
            RelativeVelocity
            {
               Observer   "Sol/Earth/Moon/GRAIL-A(Ebb)"
               Target   "Sol/Earth"
            }
         }
      }
   }
   FixedRotation
   {
      Period   0.0
   }   
}
    {
   Ending  2456276.5  #  2012 Dec 15 00:00 
   OrbitFrame
   {
      EclipticJ2000   {Center "Sol/Earth/Moon"}
   }
   EllipticalOrbit
   {
      Epoch   2456169.5  #  2012 Aug 30 00:00
      Period   0.07678416670471568
      SemiMajorAxis   1761.509923626031
      Eccentricity   0.001284622322057169
      Inclination   90.76557145585075
      AscendingNode   116.4163077005435
      ArgOfPericenter   132.8817359984076
      MeanAnomaly   252.7076545510066
   }
   BodyFrame
   {
      TwoVector
      {
         Center   "Sol/Earth/Moon/GRAIL-A(Ebb)"
         Primary
         {
            Axis   "-z"
            RelativePosition
            {
               Observer   "Sol/Earth/Moon/GRAIL-A(Ebb)"
               Target   "Sol"
            }
         }
         Secondary
         {
            Axis   "y"
            RelativeVelocity
            {
               Observer   "Sol/Earth/Moon/GRAIL-A(Ebb)"
               Target   "Sol/Earth"
            }
         }
      }
   }
   FixedRotation
   {
      Period   0.0
   }      
}
    {
   Ending  2456279.437431  #  2012 Dec 17 22:29:54.0000 TDB
   SampledTrajectory
   {
      Source   "grail-a-final.xyzv"
      DoublePrecision   true
      Interpolation   "cubic"
   }
   BodyFrame
   {
      TwoVector
      {
         Center   "Sol/Earth/Moon/GRAIL-A(Ebb)"
         Primary
         {
            Axis   "-z"
            RelativePosition
            {
               Observer   "Sol/Earth/Moon/GRAIL-A(Ebb)"
               Target   "Sol"
            }
         }
         Secondary
         {
            Axis   "y"
            RelativeVelocity
            {
               Observer   "Sol/Earth/Moon/GRAIL-A(Ebb)"
               Target   "Sol/Earth"
            }
         }
      }
   }
   FixedRotation
   {
      Period   0.0
   }
}       
]
}
   
   
"GRAIL-B(Flow)" "Sol/Earth/Moon"
{
    Class    "spacecraft"
   Mesh "grail-b.cmod"
   Radius   0.0015

Timeline
[
    {
   Beginning   "2011 09 10 13:10"
   Ending   2455928.5  # 2012 Jan 02 00:00
   SampledTrajectory
   {
      Source   "grail-b.xyzv"
      DoublePrecision   true
      Interpolation   "cubic"
   }
   BodyFrame
   {
      TwoVector
      {
         Center   "Sol/Earth/Moon/GRAIL-B(Flow)"
         Primary
         {
            Axis   "-z"
            RelativePosition
            {
               Observer   "Sol/Earth/Moon/GRAIL-B(Flow)"
               Target   "Sol"
            }
         }
         Secondary
         {
            Axis   "y"
            RelativeVelocity
            {
               Observer   "Sol/Earth/Moon/GRAIL-B(Flow)"
               Target   "Sol/Earth"
            }
         }
      }
   }
   FixedRotation
   {
      Period   0.0
   }   
}
    {
   Ending  2455987.5  #  2012 Mar 01 00:00
   OrbitFrame
   {
      EclipticJ2000   {Center "Sol/Earth/Moon"}
   }
   EllipticalOrbit
   {
      Epoch   2455928.5  # 2012 Jan 02 00:00
      Period   0.4776203291674804
      SemiMajorAxis   5957.890442931774
      Eccentricity   0.6892279568464152
      Inclination   89.44122051016714
      AscendingNode   118.8202029291941
      ArgOfPericenter   355.6639584569451
      MeanAnomaly   50.01164219731344
   }
   BodyFrame
   {
      TwoVector
      {
         Center   "Sol/Earth/Moon/GRAIL-B(Flow)"
         Primary
         {
            Axis   "-z"
            RelativePosition
            {
               Observer   "Sol/Earth/Moon/GRAIL-B(Flow)"
               Target   "Sol"
            }
         }
         Secondary
         {
            Axis   "y"
            RelativeVelocity
            {
               Observer   "Sol/Earth/Moon/GRAIL-B(Flow)"
               Target   "Sol/Earth"
            }
         }
      }
   }
   FixedRotation
   {
      Period   0.0
   }   
}
    {
    Ending   2456076.5  # 2012 May 29 00:00
   OrbitFrame
   {
      EclipticJ2000   {Center "Sol/Earth/Moon"}
   }
   EllipticalOrbit
    {
      Epoch   2455987.5  # 2012 Mar 01 00:00
      Period   0.07882694403541249
      SemiMajorAxis   1792.615321178112
      Eccentricity   0.0170408602073046
      Inclination   90.06475023433207
      AscendingNode   118.4469278176967
      ArgOfPericenter   177.2667388208952
      MeanAnomaly   52.77210628335125
   }
   BodyFrame
   {
      TwoVector
      {
         Center   "Sol/Earth/Moon/GRAIL-B(Flow)"
         Primary
         {
            Axis   "-z"
            RelativePosition
            {
               Observer   "Sol/Earth/Moon/GRAIL-B(Flow)"
               Target   "Sol"
            }
         }
         Secondary
         {
            Axis   "y"
            RelativeVelocity
            {
               Observer   "Sol/Earth/Moon/GRAIL-B(Flow)"
               Target   "Sol/Earth"
            }
         }
      }
   }
   FixedRotation
   {
      Period   0.0
   }   
}
    {
   Ending  2456169.5  # 2012 Aug 30 00:00
   OrbitFrame
   {
      EclipticJ2000   {Center "Sol/Earth/Moon"}
   }
   EllipticalOrbit
   {
      Epoch   2456076.5  # 2012 May 29 00:00
      Period   0.07882308655490666
      SemiMajorAxis   1792.556838340461
      Eccentricity   0.01872549084043667
      Inclination   90.31192170687589
      AscendingNode   117.3188144256476
      ArgOfPericenter   343.600352008243
      MeanAnomaly   145.4291974597704
   }
   BodyFrame
   {
      TwoVector
      {
         Center   "Sol/Earth/Moon/GRAIL-B(Flow)"
         Primary
         {
            Axis   "-z"
            RelativePosition
            {
               Observer   "Sol/Earth/Moon/GRAIL-B(Flow)"
               Target   "Sol"
            }
         }
         Secondary
         {
            Axis   "y"
            RelativeVelocity
            {
               Observer   "Sol/Earth/Moon/GRAIL-B(Flow)"
               Target   "Sol/Earth"
            }
         }
      }
   }
   FixedRotation
   {
      Period   0.0
   }   
}
    {
   Ending  2456276.5  #  2012 Dec 15 00:00 
   OrbitFrame
   {
      EclipticJ2000   {Center "Sol/Earth/Moon"}
   }
   EllipticalOrbit
   {
      Epoch   2456169.5  # 2012 Aug 30 00:00
      Period   0.07678298347220741
      SemiMajorAxis   1761.521427216069
      Eccentricity   0.001436897456442038
      Inclination   90.77673513209157
      AscendingNode   116.3983333835724
      ArgOfPericenter   140.6915682827892
      MeanAnomaly   242.6018881352763
   }
   BodyFrame
   {
      TwoVector
      {
         Center   "Sol/Earth/Moon/GRAIL-B(Flow)"
         Primary
         {
            Axis   "-z"
            RelativePosition
            {
               Observer   "Sol/Earth/Moon/GRAIL-B(Flow)"
               Target   "Sol"
            }
         }
         Secondary
         {
            Axis   "y"
            RelativeVelocity
            {
               Observer   "Sol/Earth/Moon/GRAIL-B(Flow)"
               Target   "Sol/Earth"
            }
         }
      }
   }
   FixedRotation
   {
      Period   0.0
   }   
}
    {
   Ending  2456279.437431  #  2012 Dec 17 22:29:54.0000 TDB
   SampledTrajectory
   {
      Source   "grail-b-final.xyzv"
      DoublePrecision   true
      Interpolation   "cubic"
   }
   BodyFrame
   {
      TwoVector
      {
         Center   "Sol/Earth/Moon/GRAIL-B(Flow)"
         Primary
         {
            Axis   "-z"
            RelativePosition
            {
               Observer   "Sol/Earth/Moon/GRAIL-B(Flow)"
               Target   "Sol"
            }
         }
         Secondary
         {
            Axis   "y"
            RelativeVelocity
            {
               Observer   "Sol/Earth/Moon/GRAIL-B(Flow)"
               Target   "Sol/Earth"
            }
         }
      }
   }
   FixedRotation
   {
      Period   0.0
   }
}       
]
}
   
Attachments
GRAIL.7z
(1.74 MiB) Downloaded 12 times

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gironde M
Posts: 155
Joined: 16.12.2016
Age: 65
With us: 1 year 7 months
Location: Montigny-Les-Metz, Grand Est, Lorraine, Moselle, France

Post #359by gironde » 02.07.2018, 11:33

Now a little japanese launcher: Epsilon 1
height 24.4m
payload 1T5
small size for small satellites and small launch site.
3 launches, all successful, but others are already planned.

I put it in launch situation, on the ground, without being able to align it correctly.

It's up to you to try.
Attachments
Epsilon rocket (JAXA).zip
(1.07 MiB) Downloaded 12 times
Epsilon 1.jpg

Avatar
gironde M
Posts: 155
Joined: 16.12.2016
Age: 65
With us: 1 year 7 months
Location: Montigny-Les-Metz, Grand Est, Lorraine, Moselle, France

Post #360by gironde » 02.07.2018, 12:02

attached list of addons published on topic "Spacecrafts for Celestia"
this list is in Excel format.
The different posts for each addon are listed in different columns with the direct link in comentaire.


This allows you to find more easily a subject and its modifications.
Attachments
list addon Spacecrafts for Celestia at 02-07-2018.zip
(16.47 KiB) Downloaded 9 times


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