SGR 1806-20 [SEP] constellation
SGR 1806−20
SGR 1806−20 is a magnetar, a type of neutron star with a very powerful magnetic field, that was discovered in 1979 and identified as a soft gamma repeater. SGR 1806−20 is located about 14.5 kiloparsecs (50,000 light-years) from Earth on the far side of the Milky Way in the constellation of Sagittarius. It has a diameter of no more than and rotates on its axis every 7.5 seconds (30,000 km/h rotation speed at the surface). , SGR 1806-20 is the most
10 light years) of Earth would destroy the ozone layer and be similar in effect to a 12-kiloton nuclear blast at 7.5 kilometers. The nearest known magnetar to Earth is 1E 1048.1-5937, located 9,000 light-years away in the constellation Carina.
Location.
SGR 1806−20 lies at the core of radio nebula G10.0-0.3 and is a member of an open cluster named after it, itself a component of W31, one of the largest H II regions in the Milky Way. Cluster 1806-20 is made