MWSC 4218

0.14 UTI

0.31

C_N

0.01

C_dens

0.12

C_C3

0.13

C_lit

1.0

C_dup

N_m (P>50%) 31

Core radius and density 7.2 [pc], 0.07 [pc^-2]

C3 classification DC

C_N 0.31 Poorly populated
C_dens 0.01 Very loose
C_C3 0.12 Very low quality
C_lit 0.13 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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MWSC 4218 is a poorly populated, very loose object of very low C3 quality. Its parallax locates it at a large^* distance, well above the mid-plane, affected by moderate extinction. It is catalogued as an old cluster (see Parameters). It is rarely studied in the literature.

(*): The parallax distance estimate (~5.75 kpc) differs significantly from the median photometric distance (~0.99 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.

Close Moderate extinction Old

Data

🔍 Search references for MWSC 4218 in: SciX Simbad

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Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	235.136	-33.41	0.174	-6.036	-5.266	–
Just et al.	2023	235.101	-33.474	–	–	–	–
Bica et al.	2019	235.104	-33.476	–	–	–	–
Dib et al.	2018	235.11	-33.475	–	–	–	–
Joshi et al.	2016	235.11	-33.475	–	–	–	–
Kharchenko et al.	2016	235.101	-33.474	–	–	–	–
Scholz et al.	2015	235.11	-33.475	–	-5.99	-7.06	–

💡 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–	0.99	2.3	–	1259	–	80	–	–
Just et al.	2023	–	–	–	1259	–	80	–	–
Dib et al.	2018	0.99	–	–	1259	–	–	–	–
Joshi et al.	2016	0.99	2.30	–	1259	–	–	–	–
Kharchenko et al.	2016	0.99	2.30	–	1259	–	–	–	–
Scholz et al.	2015	0.99	2.30	–	1259	–	–	–	–

Visualization

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