Hamanowa (2011): lightcurve plot of (1620) Geographos, by H. & H. Hamanowa at the Hamanowa Astronomical Observatory (D91). Obs. date: 2008-02-10; rotation period 5.22204 hours (0.217585 days) with a brightness amplitude of 1.39 mag. Quality Code of 3. Summary figures at the LCDB
Hamanowa (2011): lightcurve plot of (1620) Geographos, by H. & H. Hamanowa at the Hamanowa Astronomical Observatory (D91). Obs. date: 2008-02-10; rotation period 5.22204 hours (0.217585 days) with a brightness amplitude of 1.39 mag. Quality Code of 3. Summary figures at the LCDB