10/24/14 - SCP037, "Dwarf Star"
SCP-037 is apparently a star approximately 5 cm (2 in) in diameter, with a luminosity of about 1*10-12times that of our sun and a surface temperature of about 5000 K (determined by UBVRI analysis). The age and origin of SCP-037 is unknown, however, its nuclear activity is being carefully monitored for irregularities. Spectral analysis and comparison to known celestial bodies suggest that it is a typical (other than its uncharacteristic size) star quickly undergoing the transition to a red giant, though it is unknown if established theories of star formation and aging apply. It is thought to have entered the Earth's magnetosphere via the North Magnetic Pole.
Containment and transport of SCP-037 have been achieved by the use of powerful electromagnets, to which the artifact aligns itself according to its own magnetic field. The primary challenge to containment thus far has been its powerful electromagnetic emissions, which are intense enough to be easily seen by the naked eye from high Earth orbit. Its current enclosure is located deep underground to prevent detection and to facilitate radiative cooling into the surrounding bedrock. In effect, the entire facility and the surrounding volume of the Earth's crust act as a massive heat sink.