Number of satellites (2026)
Number of satellites (2026)
Some constellations are more visible than others. For example, βSatellite Constellations Exceed the Limits of Acceptable Brightness Established by the IAUβ: arxiv.org/abs/2507.00107
This figure is from the paper. Everything above the green line is visible to the naked eye.

Brightness statistics for satellites of the Starlink, BlueBird, Qianfan, Guowang and OneWeb constellations are reported. The means and standard deviations are compared to acceptable limits set by the International Astronomical Union's Centre for the Protection of the Dark and Quiet Sky From Satellite Constellations Interference. Nearly all these spacecraft exceed the magnitude 7+ brightness limit pertaining to interference with professional research. Most also exceed the magnitude 6 reference where they distract from aesthetic appreciation of the night sky.