CWNU 3009

0.15 UTI

0.31

C_N

0.08

C_dens

0.38

C_C3

0.0

C_lit

1.0

C_dup

N_m (P>50%) 31

Core radius and density 2.5 [pc], 0.4 [pc^-2]

C3 classification BC

C_N 0.31 Poorly populated
C_dens 0.08 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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CWNU 3009 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 an old cluster (see Parameters). It was recently reported in the literature.

Note: This object contains blue stragglers according to at least one source.

⚠️ 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.

Very distant Moderate extinction Old Contains BSS

Data

🔍 Search references for CWNU 3009 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–	15.153	57.966	0.154	-1.232	-0.05	-27.853
Cui et al.	2025	15.159	57.959	0.14	-1.23	-0.05	–
He et al.	2023	15.153	57.964	0.144	-1.232	-0.052	-27.85

💡 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–	5.75	1.225	–	2254	–	–	–	1
Cui et al.	2025	–	1.30	–	1995	–	–	–	1⁽¹⁾
He et al.	2023	5.75	1.15	–	2512	–	–	–	–

(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.

Visualization

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