# OSSI-1

> open source satellite initiative amateur satellite

**Wikidata**: [Q13218984](https://www.wikidata.org/wiki/Q13218984)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/OSSI-1)  
**Source**: https://4ort.xyz/entity/ossi-1

## Summary
OSSI-1 is an amateur CubeSat associated with the Open Source Satellite Initiative. It was launched on 2013-04-19 (COSPAR ID 2013-015B) and re-entered the atmosphere on 2013-06-30.

## Key Facts
- Instance type: CubeSat (miniaturized satellite class made up of 10 cm-sided cubic modules).  
- Common description: "open source satellite initiative amateur satellite."  
- COSPAR ID: 2013-015B.  
- Launch date: 2013-04-19.  
- Launch site (start point): Baikonur Cosmodrome Site 31.  
- Launch vehicle: Soyuz-2.1a.  
- Time of orbit decay / atmospheric entry: 2013-06-30.  
- Significant recorded events: rocket launch from Baikonur Site 31 on 2013-04-19; atmospheric entry on 2013-06-30.  
- SCN (Satellite Catalog Number): 39131.  
- External identifiers: Freebase ID /m/0vpnbdw; Wolfram Language entity code Entity["Satellite", "39131"].  
- Image: https://commons.wikimedia.org/wiki/Special:FilePath/OSSI_1.png.  
- Wikipedia presence: article titled "OSSI-1" available in at least German (de), English (en), Indonesian (id), and Korean (ko) languages; sitelink_count: 4.

## FAQs
### Q: What is OSSI-1?
A: OSSI-1 is an amateur CubeSat affiliated with the Open Source Satellite Initiative. It is identified by COSPAR ID 2013-015B.

### Q: When and how was OSSI-1 launched?
A: OSSI-1 was launched on 2013-04-19 by a Soyuz-2.1a rocket from Baikonur Cosmodrome Site 31.

### Q: How long was OSSI-1 in orbit?
A: OSSI-1 was launched on 2013-04-19 and experienced atmospheric entry (orbit decay) on 2013-06-30.

## Why It Matters
OSSI-1 represents an instance of an open-source approach applied to small satellite development within the CubeSat form factor. As an amateur CubeSat with public identifiers and documentation, it contributes to the broader ecosystem of low-cost, small-satellite missions used for education, experimentation, and community-driven space projects. The mission timeline—launch on 2013-04-19 and atmospheric entry on 2013-06-30—provides a documented short-duration orbital profile that can be referenced in studies of CubeSat mission lifetimes, launch manifest records for Soyuz-2.1a vehicles, and tracking/decay analyses. The satellite’s public identifiers (COSPAR ID 2013-015B, SCN 39131) and presence in multiple language Wikipedias make OSSI-1 a traceable example of amateur open-source satellite efforts during the 2013 launch period.

## Notable For
- Being identified and described as an "open source satellite initiative amateur satellite."  
- Classification as a CubeSat, the standardized miniaturized satellite form factor (10 cm-sided modules).  
- Launch on 2013-04-19 from Baikonur Cosmodrome Site 31 atop a Soyuz-2.1a rocket.  
- Short documented orbital lifetime with atmospheric entry on 2013-06-30.  
- Public catalog identifiers (COSPAR 2013-015B, SCN 39131) and presence in multiple-language Wikipedia entries.

## Body

### Overview
- OSSI-1 is recorded as an amateur satellite in the Open Source Satellite Initiative.  
- The Wikidata description labels it: "open source satellite initiative amateur satellite."  
- It is cataloged with SCN 39131 and COSPAR ID 2013-015B.

### Classification and design
- Instance of: CubeSat.  
- CubeSat class refers to miniaturized satellites composed of 10 cm-sided cubic modules.  
- OSSI-1 is therefore a small, standardized satellite platform in that class.

### Launch and mission timeline
- Launch date: 2013-04-19.  
- Launch vehicle: Soyuz-2.1a.  
- Launch site / start point: Baikonur Cosmodrome Site 31.  
- Significant event recorded: rocket launch from Baikonur Site 31 on 2013-04-19 (reference to launch manifest).  
- Time of orbit decay / atmospheric entry: 2013-06-30.  
- Significant event recorded: atmospheric entry on 2013-06-30.

### Identifiers and external links
- COSPAR ID: 2013-015B.  
- Satellite Catalog Number (SCN): 39131.  
- Freebase ID: /m/0vpnbdw.  
- Wolfram Language entity code: Entity["Satellite", "39131"].  
- Image resource: https://commons.wikimedia.org/wiki/Special:FilePath/OSSI_1.png.  
- Wikipedia article title: "OSSI-1" with entries in de, en, id, ko (sitelink_count: 4).

### Records and references
- Launch and event information is associated with a Soyuz-2.1a launch manifest and Baikonur Site 31 records.  
- Orbit decay (atmospheric entry) is recorded with a date of 2013-06-30.

## References

1. Jonathan's Space Report