List of add-ons in 2025

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Revision as of 04:48, 29 December 2024 by Arvil (talk | contribs) (More content for 2008 EA9.)
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Orbiter 2016

2008 EA9 installed OK here as directed by the readme file. Remember that 2008 EA9 is a vessel, not a body, so it will not appear in any scenario unless it is listed as a ship in that scenario, and it cannot be used as a reference body in any MFD such as Orbit MFD.

The config file (2008 EA9.cfg) contains the name, class name, mesh name and the name of the Bmp file, size and mass and some other parameters, and the docklist for six docks, but no orbital or rotational parameters. The Meshes folder contains two files (2008 EA9.msh and 2008 EA9_HQ.msh). The Images\Asteroids folder contains the file 2008_EA9.bmp for the visuals, and the Textures folder contains the 2008_EA9.dds file.

Doc files for this add-on include 2008 EA9.pdf, which gives the diameter, mass, and orbital elements. The readme.txt file just says to extract the zip file into the Orbiter root folder.

The add-on comes with four scenario files:

  • 1. Launch from Earth.scn
  • 2. Arrival at 2008 EA9.scn
  • 3. Anchored on 2008 EA9.scn
  • Closes_approach - 2019.snc

Scenario 1. Launch from Earth

The description in the Launchpad for this scenario says that November 15 2009 is the best date for travel to 2008 EA9, and to program the arrival date to MJD 58896. This scenario launches with the DeltaGlider in LEO at an altitude of about 637 km.

So, let's switch the left MFD to IMFD 5.7 to Target Intercept and set the target to 2008 EA9. Change the arrival MJD to 58896. Checking all the Plane trajectories, we find that Off Plane has the lowest Total dV required at about 1949 m/s.

In the right MFD we'll also call up IMFD 5.7, and select Orbit-Eject, changing the Higher Orbit to course and Realtime to Off-Axis. We note that the EIn is about -3.45° and needs to be <1° so we'll fast forward until the ship's position is approaching the next node, then back to ×1, select NML+ orientation and use main thrusters to zero out the EIn. Release the NML+ orientation. Switch the view to the BV page, we note TtB is about 4800 seconds. Fast forward to just above 180 seconds, select the AB button to Autoburn. At 180, the ship orients to the burn vector, at zero, main engines start for about 4 minutes.

To be continued

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