Sun distance (au): 1.148 Perihel : 2.December 2025 Sun distance (au): 1,11

Time: 16:06UT 2025-12-20 Exp.49 x 30sec + DSS II
Tel. 0.254m f/5.8 ST-10XME CCD @ -30°C 0.95"/pix
Odd Trondal Obs.code 238 (Uranium). Oslo Norway.

Atom weight Neptunium Isotope 238.Half-life 2 days
Plutonium Isotope.Atom-weight 238.Half-life 87.7 years gives power to the Voyagers, New Horizon and other distant spacecrafts.