CWNU 2001

0.20 UTI

0.25

C_N

0.23

C_dens

0.38

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 25

Core radius and density 1.2 [pc], 1.1 [pc^-2]

C3 classification CB

C_N 0.25 Poorly populated
C_dens 0.23 Very loose
C_C3 0.38 Low quality
C_lit 0.06 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 2001 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by high extinction. It is catalogued as a metal-rich, intermediate-age cluster (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.

Relatively close High extinction Metal-rich Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD classes: 0.46 (50th percentile), false positive? (human-assigned).

Hunt & Reffert (2023)
Classified as open cluster. CMD classes: 0.46 (50th percentile), false positive? (human-assigned).

Data

🔍 Search references for CWNU 2001 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–	331.852	58.585	0.438	-4.516	-3.465	-49.728
Hunt & Reffert	2024	331.852	58.571	0.432	-4.487	-3.454	-49.38
Cavallo et al.	2024	331.85	58.61	0.438	–	–	–
Hunt & Reffert	2023	331.852	58.571	0.432	-4.487	-3.454	-49.38
He et al.	2023	331.85	58.587	0.448	-4.519	-3.46	-49.38

💡 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–	2.11	4.385	1.81	152	0.510	202	–	–
Hunt & Reffert	2024	2.11	4.47	1.81	147	–	202⁽¹⁾	–	–
Cavallo et al.	2024	2.52	4.24	–	158	0.510	–	–	–
Hunt & Reffert	2023	2.11	4.47	1.81	147	–	–	–	–
He et al.	2023	2.00	4.30	–	398	–	–	–	–

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

Visualization

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