StarNav:Celestial Navigation — is a mod that completely changes the navigation system. There are no coordinates anymore you don't even need to look for them in F3. Now you have a total of 6 tools to determine your location.
Tools
Sextant — Measure the altitude of the North Star to calculate the Z coordinate
Chronometer — Find out the reference time for calculating the X coordinate
Astrolabe — The cheapest, fastest, and least accurate way to find out where you are
Mariner's Compass — Used to determine the cardinal directions
Hand-Drawn map — Draw the map yourself, marking deep rivers, dense forests, and vast fields to get a sense of the surrounding area
Sundial — A sundial is used to tell local time, but be careful—at night, this thing is completely useless.
Guide
For more information, the game includes the Star Navigation manual, which provides formulas and methods for determining your location.
DEPENDENCIES
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as StarNavCN-0.4.0-1.21.1.jar — drop this file into the mods folder
- Download size: 10.2 MB
- Download link checked 24 Aug 2026 — working
These come from our own check of the pack file, not from the source page.