CWNU 165

0.23 UTI

0.0

C_N

0.26

C_dens

0.62

C_C3

0.12

C_lit

1.0

C_dup

N_m (P>50%) 24

Core radius and density 1.7 [pc], 1.3 [pc^-2]

C3 classification AC

C_N 0.0 Sparse
C_dens 0.26 Loose
C_C3 0.62 Intermediate quality
C_lit 0.12 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 165 is a sparse, loose object of intermediate C3 quality. Its parallax locates it at a relatively 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 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 165 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–	290.088	4.326	0.686	0.112	-0.769	27.52
Hunt & Reffert	2024	290.082	4.33	0.679	0.047	-0.852	12.683
Cavallo et al.	2024	290.075	4.33	0.679	–	–	–
Hunt & Reffert	2023	290.082	4.33	0.679	0.047	-0.852	12.683
He et al.	2022	290.076	4.313	0.7	0.1	-0.77	–

💡 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–	1.515	1.765	1.03	117	-0.136	160	–	–
Hunt & Reffert	2024	1.42	1.77	1.03	165	–	160⁽¹⁾	–	–
Cavallo et al.	2024	1.61	2.32	–	69	0.610	–	–	–
Hunt & Reffert	2023	1.42	1.76	1.03	165	–	–	–	–
He et al.	2022	2.04	1.33	–	3	-0.881	–	–	–

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

Visualization

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