CWNU 1331

0.39 UTI

0.25

C_N

0.33

C_dens

0.75

C_C3

0.3

C_lit

1.0

C_dup

N₅₀ (P>50% members) 25

Stellar density (N₅₀/rad) 1.6 [N/pc²]

C3 classification AB

C_N 0.25 Poorly populated
C_dens 0.33 Loose
C_C3 0.75 High quality
C_lit 0.3 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 1331 is a poorly populated, loose object of high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It was recently reported in the literature.

Note: This object shares a large percentage of members with a later reported entry. See table with shared members information.

Relatively close Low extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for CWNU 1331 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–	109.995	3.26	0.46	-1.989	-0.322	62.721
Hu & Soubiran	2025	110.003	3.241	–	–	–	–
Hunt & Reffert	2024	109.983	3.206	0.468	-1.943	-0.35	62.715
Cavallo et al.	2024	110.003	3.242	0.47	–	–	–
Hunt & Reffert	2023	109.983	3.206	0.468	-1.943	-0.35	62.715
He et al.	2023	110.0	3.254	0.471	-1.975	-0.35	53.26

💡 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–	1.94	0.2	0.61	596	-0.120	131	–	–
Hu & Soubiran	2025	–	–	–	–	-0.170⁽⁵⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	131⁽¹⁾	–	–
Cavallo et al.	2024	1.75	0.13	–	631	-0.070	–	–	–
Hunt & Reffert	2023	1.94	0.20	0.61	596	–	–	–	–
He et al.	2023	2.09	0.60	–	251	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWWDL 14085	76.0	109.99	3.23	0.45	-2.0	-0.31	62.72	0.03

💡 Note: The % column shows the percentage of members that CWNU 1331 shares with each listed object.

Visualization

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