Basel 15 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate^* distance, near the mid-plane, affected by moderate extinction. It is catalogued as an intermediate-age cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is poorly studied in the literature, with no articles listed in the last 9 years.

(*): The parallax distance estimate (~3.22 kpc) differs significantly from the median photometric distance (~1.35 kpc).

Note: This object shares a moderate percentage of members with a later reported entry. See table with shared members information.

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	–	318.995	48.801	0.311	-4.117	-4.578	–
Loktin & Popova	2017	318.975	48.849	–	-0.574	0.193	–
Dias et al.	2014	318.975	48.85	–	-3.82	-4.45	–
van den Bergh	2006	318.975	48.85	–	–	–	–
Dias et al.	2002	318.975	48.85	–	-3.82	-4.45	–

💡 Note: The UCC values are estimated from its identified members.