If confirmed as an exoplanet, it would orbit at approximately 1.1 AU away from Alpha Centauri A with a period of about a year and would have a mass between that of Neptune and one-half that of Saturn and would therefore likely be a giant planet.
[2] Previous observations from years before ruled out the possibility of it being a background star.
The team presented the discovery of the exoplanet candidate in a publication in Nature Communications titled “Imaging low-mass planets within the habitable zone of Alpha Centauri.”[3] However, the observation arc, being only 100 hours long, is not enough to determine whether a signal is planetary in nature, and it may be zodiacal dust or an instrumental artifact.
The possible detection of the planet is extremely preliminary, and the object may not even count as a planetary candidate.
Due to this large size, it is highly unlikely to be rocky and is probably a Neptune-sized planet.