What!
Bishopthorpe dot net gets it wrong! Our story about the sky debris on the railway path turns out not to be accurate. The object in question turns out to have been deliberately placed there! We quote from a leaflet 'York's Solar System Model':
The Cassini spacecraft, launched on 15th October 1997 by NASA, is the first to explore the rings and moons around the planet Saturn. After a seven year journey, Cassini entered Saturn's orbit and has been sending back data images ever since. In January 2005 the Euroean Space Agency's Huygens probe was launced form Cassini into the thick atmosphere of Saturn'a largest moon, Titan.
The one-third scale model...is on the cycle track at the Old Naburn station, close to Saturn on the Solar Systerm model.
Mmmm.
More at www.solar.ac.uk.