Teo Blašković founded The Watchers in 2011 and edited it until 2026, covering seismic and volcanic activity, extreme weather, space weather and near-Earth objects. Articles on this page are his archive.

  • Asteroid 2018 SN3 flew past Earth at 0.51 LD, 13th in 28 days

    A newly discovered asteroid designated 2018 SN3 flew past Earth at 0.51 LD / 0.00131 AU (195 973 km / 121 772 miles) on September 16, 2018. This is now the 13th known asteroid to flyby Earth in September 2018 and 53rd since the start of the year. 2018 SN3 has an…

  • Asteroid 2018 TC flew past Earth at 0.79 LD, 12th in 28 days

    A newly discovered asteroid designated 2018 TC flew past Earth at 0.79 LD / 0.00204 AU (305 179 km / 189 629 miles) at 20:00 UTC on September 30, 2018. 2018 TC belongs to the Apollo group of asteroids. It was first observed at ATLAS-MLO, Mauna Loa on October 2,…