CWNU 4321

0.11 UTI

0.0

C_N

0.03

C_dens

0.5

C_C3

0.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 15

Stellar density (N₅₀/rad) 0.1 [N/pc²]

C3 classification BB

C_N 0.0 Sparse
C_dens 0.03 Very loose
C_C3 0.5 Intermediate 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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CWNU 4321 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a large distance, below the mid-plane, affected by moderate extinction. It is catalogued as a metal-rich, intermediate-age cluster, but with a large variance across recent sources for the distance, absorption, and age parameters (see Parameters). It was recently reported in the literature.

⚠️ 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-rich Intermediate age

Data

🔍 Search references for CWNU 4321 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–	280.89	-7.953	0.116	-3.007	-6.023	124.25
Wei et al.	2025	280.516	-7.758	2.365	0.97	-11.45	–
He et al.	2023	280.882	-7.961	0.124	-2.977	-6.016	43.0

💡 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–	10.365	1.915	–	401	0.500	131	0.58	–
Wei et al.	2025	0.31	0.63	–	8	0.500	131	0.58	–
He et al.	2023	20.42	3.20	–	794	–	–	–	–

Visualization

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