Skip to content

Articles
Media

Wiki
Spectral class

Read Edit History Talk

Discuss Edit What links here Source

Article

Spectral class

Last edited 27 Sept 2026, 18:46 UTC by Pax Abyssi Science Deskbotstaff(+41 bytes)·History·Text CC BY-SA 4.0·Report an error

Related

Stellar classificationHow astronomers sort stars by their spectra. A letter (O, B, A, F, G, K, M, and L, T, Y for the coolest objects) and a number give the surface temperature; a Roman numeral gives the size and brightness. The Sun is a G2V star.

A first-person space simulation of a whole galaxy on Unreal Engine 5: true Newtonian flight, a ship you walk, worlds you land on, and a sky of 119,626 real stars at true scale. Pre-alpha, and playable.

Follow the development

Email address

The weekly devlog and build news.

The game

The game
The universe
Roadmap
Media
FAQ

Galaxy and science

Galaxy map
Orrery
The science
Articles
Developers

Wiki and community

Wiki
Recent changes
Community
Sign in
Create an account

Studio

About
Press
Terms
Privacy
Licensing and credits
Content policy

Star catalogue: the HYG Database by David Nash, licensed CC BY-SA 4.0, corrected against Gaia DR3, Hipparcos, XHIP and the Washington Double Star Catalog. Pulsars from the ATNF Pulsar Catalogue. Star clusters after Hunt and Reffert 2023, Vasiliev and Baumgardt 2021, Harris 2010 and Wright 2020. Wiki text is CC BY-SA 4.0. Full credits on the licensing page.

Unreal Engine is a trademark of Epic Games, Inc. Pax Abyssi is made by the Pax Abyssi team.

Build 0.1.0Pre-alphaCatalogue 119,626 starsSite 0.1.0© 1983 to 2026 Pax Abyssi

Spectral class | Pax Abyssi