CWNU 358

0.19 UTI

0.31

C_N

0.31

C_dens

0.12

C_C3

0.1

C_lit

1.0

C_dup

N_m (P>50%) 31

Core radius and density 1.3 [pc], 1.6 [pc^-2]

C3 classification DC

C_N 0.31 Poorly populated
C_dens 0.31 Loose
C_C3 0.12 Very low quality
C_lit 0.1 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 358 is a poorly populated, loose object of very low C3 quality. Its parallax locates it at a relatively close distance, above 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 rarely studied 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 Moderate extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.99 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.99 (50th percentile).

Data

🔍 Search references for CWNU 358 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–	72.968	49.07	0.561	-0.599	0.856	–
Hu & Soubiran	2025	72.979	49.081	–	–	–	–
Hunt & Reffert	2024	72.978	49.071	0.56	-0.588	0.876	–
Cavallo et al.	2024	72.979	49.081	0.558	–	–	–
Hunt & Reffert	2023	72.978	49.071	0.56	-0.588	0.876	–
He et al.	2022	72.961	49.087	0.56	-0.58	0.86	–

💡 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–	1.69	1.5	0.35	426	-0.170	84	–	–
Hu & Soubiran	2025	–	–	–	–	-0.040⁽⁵⁾	–	–	–
Hunt & Reffert	2024	1.69	1.50	0.35	426	–	84⁽¹⁾	–	–
Cavallo et al.	2024	1.66	1.54	–	1000	-0.170	–	–	–
Hunt & Reffert	2023	1.69	1.50	0.35	426	–	–	–	–
He et al.	2022	2.63	0.51	–	2	-0.404	–	–	–

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

Visualization

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