CKCWDM 4931

0.15 UTI

0.33

C_N

0.05

C_dens

0.38

C_C3

0.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 33

Stellar density (N₅₀/rad) 0.3 [N/pc²]

C3 classification BC

C_N 0.33 Poorly populated
C_dens 0.05 Very loose
C_C3 0.38 Low quality
C_lit 0.0 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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CKCWDM 4931 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a large^* distance, below the mid-plane, affected by moderate extinction. It is catalogued as a metal-poor, intermediate-age cluster (see Parameters). It was recently reported in the literature.

(*): The parallax distance estimate (~9.12 kpc) differs significantly from the median photometric distance (~13.97 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.

Extremely distant Moderate extinction Metal-poor Intermediate age

Data

🔍 Search references for CKCWDM 4931 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–	140.042	-54.495	0.11	-3.673	3.442	–
Chi et al.	2025	140.018	-54.498	0.072	-3.66	3.421	–

💡 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–	13.97	2.12	–	821	-0.588	–	–	–
Chi et al.	2025	13.97	2.12	–	821	-0.588	–	–	–

Visualization

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