[12] There have been two reported stellar occultations by Lutetia, observed from Malta in 1997 and Australia in 2003, with only one chord each, roughly agreeing with IRAS measurements.

[citation needed] On 10 July 2010, the European Rosetta space probe flew by Lutetia at a minimum distance of 3168 ± 7.5 km at a velocity of 15 kilometres per second on its way to the comet 67P/Churyumov-Gerasimenko.

[4] The flyby provided images of up to 60 meters per pixel resolution and covered about 50% of the surface, mostly in the northern hemisphere.

[3] Taking into account possible porosity of 10–15%, the bulk density of Lutetia exceeds that of a typical stony meteorite.

No absorption features were detected in the range covered by observations, 0.4–3.5 μm, which is at odds with previous ground-based reports of hydrated minerals and carbon-rich compounds.

[5][21] Rosetta observations revealed that the surface of Lutetia is covered with a regolith made of loosely aggregated dust particles 50–100 μm in size.

[3][8] The Rosetta probe's photographs confirmed the results of a 2003 lightcurve analysis that described Lutetia as a rough sphere with "sharp and irregular shape features".

The analysis of Rosetta images in combination with photometric light curves yielded the position of the north rotational pole of Lutetia: RA = 51.8°±0.4°, Dec = +10.8°±0.4°.

They are Baetica (Bt), Achaia (AC), Etruria (Et), Narbonensis (Nb), Noricum (Nr), Pannonia (Pa), and Raetia (Ra).

Baetica is covered by a smooth ejecta blanket approximately 600 m thick that has partially buried older craters.

[3] The numerical simulations showed that even the impact that produced the largest crater on Lutetia, which is 45 km in diameter, seriously fractured but did not shatter the asteroid.

[24] In March, 2011, the Working Group for Planetary Nomenclature at the International Astronomical Union agreed on a naming scheme for geographical features on Lutetia.

[25] The composition of Lutetia suggests that it formed in the inner Solar System, among the terrestrial planets, and was ejected into the asteroid belt through an interaction with one of them.