Basel 12

(MWSC 3471)

0.21 UTI

0.0

C_N

0.11

C_dens

0.12

C_C3

0.4

C_lit

1.0

C_dup

N₅₀ (P>50% members) 16

Stellar density (N₅₀/rad) 0.6 [N/pc²]

C3 classification DC

C_N 0.0 Sparse
C_dens 0.11 Very loose
C_C3 0.12 Very low quality
C_lit 0.4 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

MOCA 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

ℹ️

Basel 12 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a moderate^* distance, below the mid-plane, affected by moderate extinction. It is catalogued as a massive, intermediate-age cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~4.16 kpc) differs significantly from the median photometric distance (~2.97 kpc).

⚠️ 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.

Relatively close Moderate extinction Massive Intermediate age

Data

🔍 Search references for Basel 12 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	317.604	46.242	0.24	-3.317	-4.277	-63.53
Just et al.	2023	317.605	46.232	–	–	–	–
Loktin & Popova	2017	317.61	46.232	–	-4.859	1.945	–
Kharchenko et al.	2016	317.605	46.232	–	–	–	–
Dias et al.	2014	317.625	46.233	–	-2.73	-1.82	–
Kharchenko et al.	2013	317.61	46.235	–	-5.06	1.6	–
van den Bergh	2006	317.625	46.233	–	–	–	–
Dias et al.	2002	317.625	46.233	–	-2.73	-1.82	–

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

Reference	Year	Dist [kpc]	Av [mag]	DAv [mag]	Age [Myr]	[Fe/H] [dex]	Mass [Msun]	B_frac	BSS
UCC	99999–	2.97	2.02	–	841	–	1002	–	–
Just et al.	2023	–	–	–	841	–	1002	–	–
Loktin & Popova	2017	2.97	2.02	–	891	–	–	–	–
Kharchenko et al.	2016	5.66	2.26	–	841	–	–	–	–
Kharchenko et al.	2013	5.66	2.26	–	841	–	–	–	–
van den Bergh	2006	1.47	1.77	–	316	–	–	–	–
Dias et al.	2002	1.47	1.77	–	316	–	–	–	–

Visualization

ℹ️