plan to extend the list soon. Figure 7 gives the result of the search of a galaxy in one VIRCAM image.

Conclusions and Recommendations
===============================

The EURONEAR [*Mega-Archive*]{} project started in 2010 by joining meta-data of the first three instrument archives (CFHTLS, ESO/MPG and ING/INT), becoming the first such server for data mining asteroids and NEAs. In the same year we introduced [*Mega-Precovery*]{} to search [*Mega-Archive*]{} images for one or a few known asteroids or comets given by designations.\
During past years we added other archives, mainly based on six archive collections (CADC, ESO, ING, SMOKA, NVO and LCOGT) and by 2018 [*Mega-Archive*]{} has indexed 15 million images. In 2014 we implemented a crawler for automate query of five collections (except for NVO which does not allow programmatic queries) for daily update of the [*Mega-Archive*]{}. In 2016 we released the second version of [*Mega-Archive*]{} and [*Mega-Precovery*]{} which migrated to the new EURONEAR server and adopted the new SQL database architecture. Since Oct 2017 the third actual version of [*Mega-Precovery*]{} introduced two options for calculus of the ephemerides and three input options (search by designation, based on orbit, and observations).\
During last few years we designed other tools aimed to take 