3 citations · 9 across the 11 of their papers we have counts for
5 papers · 1 filter
Brightness of the Qianfan Satellites
Anthony Mallama, Richard E. Cole, Bram Dorreman +2
Observed magnitudes of Qianfan spacecraft range from 4 when they are near zenith to 8 when low in the sky. Nearly all of the observations can be modeled with a nadir-facing flat an…
BlueWalker 3 Redux
Anthony Mallama, Richard E. Cole, Scott Harrington +4
The BlueWalker 3 satellite is now fainter than during the first months after deployment. The greatest improvement is that the average maximum luminosity near zenith has been reduce…
Brightness Characterization for Starlink Direct-to-Cell Satellites
Anthony Mallama, Richard E. Cole, Scott Harrington +1
The mean apparent magnitude of Starlink Mini Direct-To-Cell (DTC) satellites is 4.62 while the mean of magnitudes adjusted to a uniform distance of 1000 km is 5.50. DTCs average 4.…
The Brightness of Starlink Mini Satellites During Orbit-Raising
Anthony Mallama, Richard E. Cole, Jay Respler +3
Observations of Starlink V2 Mini satellites during orbit-raising suggest that SpaceX applies brightness mitigation when they reach a height of 357 km. The mean apparent magnitudes…
Starlink Mini Satellite Brightness Distributions Across the Sky
Anthony Mallama, Richard E. Cole, Jay Respler +3
The illumination phase functions for Starlink Mini satellites are determined for times of twilight and darkness. Those functions are then evaluated to give apparent magnitudes over…