# X-Sat

> Singaporean microsatellite

**Wikidata**: [Q4352990](https://www.wikidata.org/wiki/Q4352990)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/X-Sat)  
**Source**: https://4ort.xyz/entity/x-sat

## Summary
X-Sat is a Singaporean microsatellite designed to function as both a technology demonstration spacecraft and an Earth observation satellite. Launched on April 20, 2011, it was deployed into orbit using a Polar Satellite Launch Vehicle (PSLV) from the Satish Dhawan Space Centre. The satellite is tracked internationally under the designator 2011-015C and Satellite Catalog Number 37389.

## Key Facts
- **Entity Type:** Singaporean microsatellite; Instance of Earth observation satellite and technology demonstration spacecraft.
- **Launch Date:** April 20, 2011.
- **Launch Vehicle:** Polar Satellite Launch Vehicle (PSLV).
- **Launch Site:** Satish Dhawan Space Centre First Launch Pad.
- **COSPAR ID:** 2011-015C.
- **Satellite Catalog Number (SCN):** 37389.
- **Primary Functions:** Demonstrating experimental technologies and observing Earth from orbit.
- **Wikipedia Presence:** Available in 5 language editions (German, English, Finnish, Galician, Latvian).

## FAQs
### Q: What was the primary purpose of the X-Sat satellite?
A: X-Sat served a dual purpose as a technology demonstration spacecraft and an Earth observation satellite. It was used to test experimental technologies in orbit while simultaneously capturing data regarding the Earth.

### Q: When and how was X-Sat launched?
A: X-Sat was launched on April 20, 2011. It was delivered into orbit by a Polar Satellite Launch Vehicle (PSLV) launched from the Satish Dhawan Space Centre First Launch Pad.

### Q: How is X-Sat identified in international satellite catalogs?
A: The satellite is identified by the COSPAR ID 2011-015C and the Satellite Catalog Number (SCN) 37389. It is also represented in Wolfram Language as `Entity["Satellite", "37389"]`.

## Why It Matters
X-Sat represents a significant entry in the category of microsatellites developed by Singapore. As a technology demonstration spacecraft, it plays a crucial role in the validation of experimental hardware and software systems in the harsh environment of space. By combining this experimental mandate with Earth observation capabilities, the satellite contributes valuable data for remote sensing and environmental monitoring.

Its deployment via the Polar Satellite Launch Vehicle underscores the reliance on established, expendable launch systems for placing smaller payload classes into orbit. The mission highlights the intersection of academic research and practical space application, serving as a verifiable data point in the history of Singaporean space technology and international satellite launches in 2011.

## Notable For
- **Classification:** Distinguished as a microsatellite with a dual classification as both a technology demonstrator and an Earth observation platform.
- **National Origin:** Identified specifically as a Singaporean spacecraft.
- **Launch Platform:** Utilized the Indian Space Research Organisation's (ISRO) Polar Satellite Launch Vehicle, a system with a high volume of sitelink references (42) indicating notable reliability and usage.
- **Orbital Tracking:** Maintains specific international identifiers (COSPAR 2011-015C, SCN 37389) that anchor it in the global catalog of space objects.

## Body

### Mission Profile and Classification
X-Sat is explicitly defined as a Singaporean microsatellite. Structurally and functionally, it belongs to two distinct classes of spacecraft:
1.  **Technology Demonstration Spacecraft:** Used to demonstrate experimental technologies in an operational environment.
2.  **Earth Observation Satellite:** Designed specifically to observe the Earth from orbit for remote sensing purposes.

### Launch and Deployment
The satellite's deployment is marked by a significant rocket launch event.
-   **Date of Launch:** April 20, 2011.
-   **Location:** The launch originated from the **Satish Dhawan Space Centre First Launch Pad**.
-   **Vehicle:** The insertion into orbit was achieved via the **Polar Satellite Launch Vehicle** (PSLV), an expendable launch system developed by the Indian Space Research Organisation (ISRO).

### Technical Identifiers
To facilitate global tracking and data management, X-Sat is assigned several standard identifiers:
-   **SCN (Satellite Catalog Number):** 37389
-   **COSPAR International Designator:** 2011-015C
-   **Freebase ID:** /m/0glpsbf
-   **Wolfram Language Entity:** Entity["Satellite", "37389"]

### Data Availability
Information regarding X-Sat is maintained across multiple knowledge bases and language wikis. It is referenced in Wikidata (with descriptions available) and Wikipedia, with articles available in German (de), English (en), Finnish (fi), Galician (gl), and Latvian (lv). The entry has a sitelink count of 5 and references sources such as Q6272367 and Q728945 for its property data.

## References

1. Jonathan's Space Report