CWNU 2145

0.12 UTI

0.0

C_N

0.04

C_dens

0.38

C_C3

0.1

C_lit

1.0

C_dup

N_m (P>50%) 19

Core radius and density 3.5 [pc], 0.2 [pc^-2]

C3 classification BC

C_N 0.0 Sparse
C_dens 0.04 Very loose
C_C3 0.38 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 2145 is a sparse, very loose object of 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, young cluster, but with a large variance across recent sources for the age and metallicity parameters (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 Moderate extinction Near-solar metallicity Young

Cavallo et al. (2024)
Silver sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.06 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.06 (50th percentile).

Data

🔍 Search references for CWNU 2145 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–	83.662	36.432	0.594	1.129	-3.113	–
Zhang et al.	2024	83.413	36.465	–	–	–	–
Hunt & Reffert	2024	83.413	36.465	0.589	1.02	-3.092	-68.392
Cavallo et al.	2024	83.667	36.579	0.595	–	–	–
Hunt & Reffert	2023	83.413	36.465	0.589	1.02	-3.092	-68.392
He et al.	2023	83.677	36.383	0.622	1.261	-3.137	–

💡 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–	1.675	1.92	2.32	40	0.103	131	–	–
Zhang et al.	2024	–	–	–	–	-0.353⁽¹⁾	–	–	–
Hunt & Reffert	2024	1.61	1.92	2.32	40	–	131⁽¹⁾	–	–
Cavallo et al.	2024	1.84	1.51	–	63	0.560	–	–	–
Hunt & Reffert	2023	1.61	1.92	2.32	40	–	–	–	–
He et al.	2023	1.74	3.00	–	9	–	–	–	–

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

Visualization

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