Which pulsar is considered to be very old and is located in Cetus?

The pulsar identified as PSR J0108-1431 is regarded as one of the oldest known pulsars, with an age estimated to be around 300 million years. This specific pulsar is located in the constellation Cetus. Its relatively long rotation period and low surface magnetic field strength further support its classification as an older neutron star.

In addition, PSR J0108-1431 has been of significant interest in the study of neutron stars due to its distinctive properties, such as its low luminosity compared to younger pulsars. This low luminosity and the characteristics of its rotation reflect the evolutionary changes that pulsars undergo over time, making it an important astronomical object for understanding the life cycles of neutron stars.

Other pulsars listed, although interesting and significant in their own right, do not match the criteria of being classified as very old and located in the constellation of Cetus.