Light curve of interstellar asteroid `Oumuamua
This plot shows how the interstellar asteroid `Oumuamua varied in brightness during three days in October 2017. The large range of brightness — about a factor of ten (2.5 magnitudes) — is due to the very elongated shape of this unique object, which rotates every 7.3 hours. The different coloured dots represent measurements through different filters, covering the visible and near-infrared part of the spectrum. The dotted line shows the light curve expected if `Oumuamua were an ellipsoid with a 1:10 aspect ratio, the deviations from this line are probably due to irregularities in the object's shape or surface albedo.Mynd/Myndskeið:
ESO/K. Meech et al.
|Útgáfudagur:||Nóv 20, 2017, 17:00 CET|
|Stærð:||3982 x 868 px|
|Nafn:||1I/2017 U1 (‘Oumuamua)|
|Tegund:||Milky Way : Interplanetary Body : Asteroid|