Astrogator FAQs

Interplanetary Low Thrust Example

• Apr 15, 2019
• FAQ

This describes how to model an interplanetary low-thrust satellite.

Which Refraction Model should I use for detecting space objects?

• Feb 28, 2017
• FAQ

This article provides references for deciding on a refraction model for the detection of space objects, including a customer use case of STK to...

Output Local Time of Ascending Node (LTAN)

• Mar 21, 2016
• FAQ

How to Use Nested Scheduled Vectors to Point to a Prioritized List of Targets

• Jun 30, 2023
• How To

You can create nested scheduled vectors in Analysis Workbench to generate a simple, priority-based tracking schedule in STK.

How to Use Texture Maps in EOIR

• Apr 25, 2017
• How To

This is an advanced feature of STK's EOIR capability tool. In this article, you will use a custom texture map file within your STK scenario using...

Using GIS Data Shapefiles as 3D Window Map Details

• Jan 21, 2022
• How To

This article highlights a hidden feature that enables you to use shapefiles as map details (coastlines, country borders, etc.) as items that you...

How to compute Earthshine intensity

• Apr 12, 2021
• How To

This article describes a method to compute Earthshine (sunlight reflected off Earth) intensity on a lunar satellite.

What is the Difference Between Mean and Osculating Elements?

• Jul 14, 2016
• FAQ

Here is an explanation of the difference between Mean and Osculating elements.

How do I use my own 3D model in STK?

• Mar 18, 2015
• FAQ

Where Can I Find Archived or Historical TLE Data?

• Jun 25, 2018
• How To

Set the dates and STK does it for you, or download the files from agi.com. This article describes three methods for obtaining and using TLEs in...

How Do I Load Terrain into a Scenario and Process it for Visualization?

• Sep 1, 2016
• FAQ

This article applies to any of the STK-supported terrain formats.

How to Calculate When an STK Object (satellite) is Within a Volume

• Jan 28, 2019
• How To

This article describes how to calculate when an STK Object (satellite) is within a volume. The method uses the Volumetric object and the Grid...

How to Do a 3D Terrain Attitude Analysis with Ground Vehicles in STK

• Dec 18, 2020
• How To

This article explains how to get a ground vehicle to follow the terrain.

"The Program Can't Start Because VCRUNTIME140.dll is Missing"

• Mar 3, 2017
• FAQ

A missing DLL file may prevent the STK License Server from starting.

How to Convert CAD Models for Use in the STK Application

• Dec 31, 2015
• FAQ

These are best practices for converting CAD models for use in the STK Application.

Loading an STK Viewer File into Microsoft PowerPoint

• May 21, 2015
• FAQ

STK Viewer comes with an ActiveX control that you can load into PowerPoint so that you can display Viewer files (VDFs) in a presentation. This...

How do I Use a Transponder in an Interference Analysis?

• Aug 9, 2016
• FAQ

For STK 12.5 and later, see https://register.agi.com/training/on-demand/transponder/. For STK 12.4 and earlier, you need to combine data from a...

Where Do I Get TLE Information, TLE Supplemental Data, and Other TLE Resources?

• Jul 19, 2016
• FAQ

This article answers the following questions: What is a TLE? How do I add a satellite using a TLE within the STK application? Where does the TLE...

Constraining Coverage Definitions by Access Separation Between Multiple Constellations

• Oct 6, 2025
• How To

This article gives a brief overview on access separation constraints when a Coverage Definition object has two or more constellations assigned.

How Do I Create Pointing (Targeted / Scanning / Sweeping / Creeping-line) Sensors in STK?

• Sep 29, 2016
• FAQ

This article shows various methods to create "moving" sensors in STK.