Although its very high orbital eccentricity means its opposition magnitude varies greatly, at a rare opposition near perihelion Bamberga can reach a
magnitude of +8.0, which is as bright as
Saturn's moon
Titan. Such near-perihelion oppositions occur on a regular cycle every twenty-two years, with the last occurring in 2013 and the next in 2035, when attaining magnitude 8.1 on 13 September. Its brightness at these rare near-perihelion oppositions makes Bamberga the
brightest C-type asteroid, roughly one magnitude brighter than
10 Hygiea's maximum brightness of around +9.1. At such an opposition Bamberga can in fact be closer to Earth than any
main-belt asteroid with magnitude above +9.5, getting as close as 0.78
AU. For comparison,
7 Iris never comes closer than 0.85 AU and
4 Vesta never closer than 1.13 AU (when it becomes visible to the
naked eye in a
light pollution-free sky). ==Characteristics==