CWNU 201

0.44 UTI

0.29

C_N

0.48

C_dens

0.75

C_C3

0.35

C_lit

1.0

C_dup

N₅₀ (P>50% members) 29

Stellar density (N₅₀/rad) 2.4 [N/pc²]

C3 classification AB

C_N 0.29 Poorly populated
C_dens 0.48 Loose
C_C3 0.75 High quality
C_lit 0.35 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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CWNU 201 is a poorly populated, loose object of high C3 quality. Its parallax locates it at a close distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age and metallicity parameters (see Parameters). It is poorly studied in the literature.

Close Moderate extinction Near-solar metallicity Intermediate age

Palma et al. (2025)
Classified as optical pair P338, along with vdBergh_80.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for CWNU 201 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–	95.409	-10.302	1.018	-3.575	-0.871	34.538
Hu & Soubiran	2025	95.459	-10.357	–	–	–	–
Hunt & Reffert	2024	95.378	-10.283	1.004	-3.519	-0.832	33.575
Cavallo et al.	2024	95.459	-10.357	1.004	–	–	–
Hunt & Reffert	2023	95.378	-10.283	1.004	-3.519	-0.832	33.575
He et al.	2022	95.382	-10.284	1.018	-3.594	-0.867	–
He et al.	2022	95.393	-10.278	1.02	-3.59	-0.87	39.9

💡 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–	0.92	1.81	1.3	954	-0.220	57	–	–
Hu & Soubiran	2025	–	–	–	–	-0.220⁽⁵⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	57⁽¹⁾	–	–
Cavallo et al.	2024	0.92	1.88	–	871	-0.070	–	–	–
Hunt & Reffert	2023	0.95	1.59	1.30	1038	–	–	–	–
He et al.	2022	–	2.10	–	501	–	–	–	–
He et al.	2022	0.83	1.74	–	1995	-1.335	–	–	–

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

Visualization

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