No authentication required
Check the docs depth and real endpoint shape before assuming production fit.
Start by accessing the API endpoints directly as no authentication is required. Review the documentation on the website for available data sources and usage details.
Uptime · 30-day window
About this API
arcsecond.io provides access to multiple astronomy data sources through a unified API. It is designed for developers and researchers who need to query and integrate astronomical data without the complexity of managing authentication.
The API supports a variety of astronomy datasets, enabling applications that require star catalogs, celestial object information, or other space-related data. Its RESTful design makes it straightforward to incorporate into web or mobile applications.
Because no authentication is required, it is easy to start using the API quickly, making it suitable for educational projects, prototyping, or lightweight astronomy data retrieval tasks.
What you can build
- 1Display astronomical object data
- 2Generate star catalog queries
- 3Integrate multiple astronomy datasets
- 4Build space observation tools
Strengths & limitations
Strengths
- No authentication required
- Access to multiple astronomy sources
- Simple REST interface
Getting started
Start by accessing the API endpoints directly as no authentication is required. Review the documentation on the website for available data sources and usage details.
FAQ
Do I need an API key to use arcsecond.io?+
No, arcsecond.io does not require any authentication or API key.
What kind of data can I get from arcsecond.io?+
You can access multiple astronomy data sources including star catalogs and celestial object information.
Is HTTPS required to access the API?+
While not explicitly stated, it is recommended to use HTTPS for secure data access.
Can I use arcsecond.io API from a browser?+
Yes, since no authentication is required, it can be accessed directly from browser-based applications.
Technical details
- Auth type
- none
- Pricing
- free
- Protocols
- REST
- Response time
- 625 ms
- Last health check
- 8/29/2026, 5:01:43 AM