pseudomagnitude

English

Etymology

pseudo- +‎ magnitude

Noun

pseudomagnitude (plural pseudomagnitudes)

1. A measurement that gives an indication of size but which is not a true magnitude. For example some pseudomagnitude values can be negative.
   • 2016, Alain Chelli, Gilles Duvert, Laurent Bourgès, Guillaume Mella, Sylvain Lafrasse, Daniel Bonneau, Olivier Chesneau, “Pseudomagnitudes and Differential Surface Brightness: Application to the apparent diameter of stars”, in Astronomy & Astrophysics‎^[1], volume 2016:

     It makes use of two new reddening-free concepts: a distance indicator called pseudomagnitude, and a quasi-experimental observable that is independent of distance and specific to each star, called the differential surface brightness (DSB).