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. Refer to the official documentation for available data sources and query formats.
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 retrieve astronomical data such as star catalogs, celestial object information, and other space-related datasets.
The API requires no authentication, making it easy to integrate into applications or research projects without managing API keys or tokens. Its RESTful design allows straightforward HTTP requests to query and retrieve data.
This API is relevant for building astronomy-related applications, educational tools, or data analysis platforms that require aggregated and accessible space data from various sources in a single interface.
What you can build
- 1Display star and celestial object data
- 2Generate sky maps from astronomy data
- 3Query astronomical object information
- 4Integrate astronomy data into apps
Strengths & limitations
Strengths
- No authentication required
- Aggregates multiple astronomy sources
- Simple RESTful access
Getting started
Start by accessing the API endpoints directly as no authentication is required. Refer to the official documentation for available data sources and query formats.
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 retrieve from arcsecond.io?+
You can retrieve data from multiple astronomy sources including star catalogs and celestial object information.
Is HTTPS required to access the API?+
The API is accessible over HTTPS as per standard web API practices.
Can I use arcsecond.io API from a browser?+
Yes, since no authentication is required, it can be accessed from browser-based applications.
Technical details
- Auth type
- none
- Pricing
- free
- Protocols
- REST
- Response time
- 616 ms
- Last health check
- 5/31/2026, 8:01:33 AM