PSR J1719−1438 was first observed in 2009 by a team headed by Matthew Bailes of Swinburne University of Technology in Melbourne, Australia.

[1] PSR J1719−1438 is a pulsar some 4,000 light-years (1,200 parsecs) away from Earth in the Serpens Cauda constellation, approximately one minute from the border with Ophiuchus.

[1] It is thought to be composed of oxygen and carbon (as opposed to hydrogen and helium, the main components of gas giants like Jupiter and Saturn).

[1] PSR J1719−1438 b orbits its host star with a period of 2.17 hours and at a distance of 0.89 solar radii (619,173 km or 384,736 mi).

[5] The gravity from the pulsar stole hydrogen and helium, and the remaining carbon crystallized, forming the diamond planet.