(formerly Aratus CB)
Lat: 23.78°N, Long: 12.5°E, Diam: 2.85 km, Depth: km, Rükl: 23
- Hornsby was also captured on Apollo 15's orbital ITEK-panoramic frames AS15-P-9346 and AS15-P-9351. In both frames, Hornsby is the largest one of the depicted craterlets.
- Research: Danny Caes
- IAU page: Hornsby
- The shadow in AS15-M-0406 indicates a depth of about 640 m. - Jim Mosher
- Named for Thomas Hornsby (1733-1810), a British astronomer.
- This replacement name for a formerly lettered crater was introduced on LTO-42D1 (for which it served as the chart title). It appears in the cumulative list of approved names in IAU Transactions XVB (1973). Since it does not appear in any prior IAU Transactions, it was probably approved at the 1973 meeting. Biographical information was unofficially reported in Ashbrook, 1974. - Jim Mosher