VizieR Online Data Catalog: Swift UVOT observation of the radio quasar 3C 273 (Li+, 2020)

We used the High Energy Astrophysics Science Archive Research Center (HEASARC) data archive to search for previous Swift observations of 3C273 and download the data. We found 322 observations between 2004 December 13 and 2019 April 9, including 312 observations with exposures in both the X-ray Telescope and the Ultraviolet/Optical Telescope (UVOT). Observations in the UVOT grism mode were excluded because we only wanted to use the six UVOT photometric bands.

(1 data file).