NGC 2423-3 is a red giant star approximately 3,040 light-years away in the constellation of Puppis.
[4] This planet was discovered by Christophe Lovis and Michel Mayor in July 2007 by the radial velocity method.
[4] Lovis had also found three Neptune-mass planets orbiting HD 69830 in May 2006, also in Puppis.
However, a 2018 study with the same C. Lovis as an author found evidence that the radial velocity signal corresponding to the proposed planetary companion could be caused by stellar activity or stellar pulsations, and so the planet may not exist.
[5] Another study by the same team in 2023 confirms evidence for a stellar origin of the signal.