Opening SE1 Files

The SE1 file type is primarily associated with Swiss Ephemeris.

SE1	File extension: SE1
	File type:	data file

What is a SE1 file?

SE1 files mostly belong to Swiss Ephemeris.

Primary use: SE1 files are mainly used by the Swiss Ephemeris. They hold astrological data in a custom internal binary format. This data is used in high-precision planetary and ephemeris calculations. For more details, refer to the Swiss Ephemeris webpage.

Other use: A smaller set of SE1 files work as save game files for the Shadow Empire game. These files are stored as ZIP archives that contain game state data.

Swiss Ephemeris Data: Contains computed astronomical data for precise planetary positions.
Game Save Archive: A ZIP-format archive used to save and restore game progress.

How to open SE1 files

You need a suitable software like Swiss Ephemeris to open a SE1 file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your SE1 file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a SE1 file directly in the browser:. Just drag the file onto this browser window and drop it.

Online SE1 Text Viewer

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Programs that open and convert SE1 files:

Swiss Ephemeris
See the previous paragraphs to learn more about the main application. SE1 files are often referred to as Swiss Ephemeris data files because this type of file is primarily created or used by this software.
CT Summation iBlaze (Database File) by CT Summation, Inc.
This is litigation summarization software. A Summation FRM file is always has either DB or NT in front of the .FRM (e.g., STDDB.FRM or STDNT.FRM). A .FRM file also works together with three other files .SE1, .SE2 and .SE3. Their file extension is also always preceded by either a DB or NT. This file format is classified as Database.
Flight Simulator (Scenery File) by Microsoft Corporation
Synthedit File

SE1 file format details:

Every file has a defined file format, i.e. how the data is arranged in the file. The first characters in a file identify the file format, for example, HTML files start with the bytes <html>. However, different programs can use the same file extension, and file extensions can be assigned incorrectly. So a detailed analysis of a file is vital in order to determine the format and the associated program. Below is our analysis of the SE1 files:

The SE1 file extension is not widely used. Such a file mainly uses a defined SE1 format. The following file formats are most commonly found in SE1 files:

75% of all SE1 files are Swiss Ephemeris data files. The contents of these files cannot be read by a human; only a computer program can interpret the data. Most of these files are 47 KB to 1 MB in size. This file type was primarily in use more than 20 years ago. The following keywords are characteristic: SWISSEPH 1, Copyright Astrodienst AG, Switzerland, 2014. Ephemeris based on JPL Ephemeris DE431, 1-]jAB and Copyright Astrodienst AG, Switzerland, 1998. Some examples of file names are semo_00.se1 or seas_12.se1. Such files are related to sepl and seplm.
20% of all SE1 files use ZIP compression, that is, a SE1 file includes multiple compressed files. Primarily one file is included. Tip: If you rename the file ending to .zip and then double-click it, you see the included files and images. The file size is in the range of 1 MB to 3 MB. The files contain the following words: temp, Shadow Empire, savedgames, Documents, My Games and Users. These files are attributed to autosave and round.

All other SE1 files (5%) have no consistent format. Drag & drop your file here to see the file format and a preview of your SE1 file!

Technical Data for SE1 File Extension

File classification:

Data

Related files:

se, se2, ast, epj, sce, ail, eph, zip, py, cat, exe, se3, dii, sav, dat, xml

a se1 data file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with SE1 files

Associate the SE1 file extension with the correct application.
Update your software that should actually open data files. Because only the current version supports the latest SE1 file format. Search, therefore, e.g. on the manufacturer website after an available Swiss Ephemeris update.
To make sure that your SE1 file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
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