2001/01/27 by Michele Maris, M. Maris, G. Carraro +5 · 3 citations
Physics and Astronomy · #Astro and Planetary Science #Astronomy #Astrophysics #Light curve #Photometry (optics) #Physics #Planet #Planetary Science and Exploration #Stars #Stellar, planetary, and galactic studies #Uranus #astro-ph
paper · pdf · doi:10.1086/320378
17 pages, 2 eps figures, in press in Astronomical Journal
arxiv created 2001/01/27 · openalex publication_date 2001/05/01 · arxiv updated 2016/08/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We report on accurate BVRI photometry for the two Uranian irregular satellites Sycorax and Caliban. We derive colors showing that Sycorax is bluer than Caliban. Our data allow us to detect a significant variability in Caliban's light curve, which suggests an estimated period of about 3 hr. Although it is the brighter of the two bodies, Sycorax does not display a strong, statistically significant variability. However, our data seem to suggest a period of about 4 hr.