The First Simultaneous Microlensing Observations by Two Space Telescopes: Spitzer and Swift Reveal a Brown Dwarf in Event OGLE-2015-BLG-1319
Y. Shvartzvald et al 2016 ApJ 831 183
Swift, Spitzer, and ground-based groups all simultaneously observed the microlensing event OGLE-2015-BLG-1319, allowing for the measurement of physical properties of the system.