PSR J1719−1438
PSR J1719−1438 is a millisecond pulsar with a spin period of 5.7901 ms and is characteristic age of 11.4 billion years old located about 3,900 light years (1,200 parsecs) from Earth in the direction of Serpens Cauda, one minute from the border with Ophiuchus. Millisecond pulsars are generally thought to begin as normal pulsars and then spin up by accreting matter from a binary companion.