CWNU 2173

0.17 UTI

0.0

C_N

0.21

C_dens

0.5

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 21

Core radius and density 1.5 [pc], 1.0 [pc^-2]

C3 classification BB

C_N 0.0 Sparse
C_dens 0.21 Very loose
C_C3 0.5 Intermediate quality
C_lit 0.06 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 2173 is a sparse, very 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 (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 Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.39 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.39 (50th percentile).

Data

🔍 Search references for CWNU 2173 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–	317.663	42.551	0.547	-3.98	-5.718	-26.257
Hunt & Reffert	2024	317.609	42.564	0.542	-3.981	-5.703	-18.589
Cavallo et al.	2024	317.762	42.642	0.544	–	–	–
Hunt & Reffert	2023	317.609	42.564	0.542	-3.981	-5.703	-18.589
He et al.	2023	317.646	42.54	0.529	-3.98	-5.722	–

💡 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–	1.72	1.64	2.07	162	0.240	77	–	–
Hunt & Reffert	2024	1.66	1.63	2.07	165	–	77⁽¹⁾	–	–
Cavallo et al.	2024	1.78	1.89	–	158	0.240	–	–	–
Hunt & Reffert	2023	1.66	1.63	2.07	166	–	–	–	–
He et al.	2023	1.78	1.65	–	79	–	–	–	–

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

Visualization

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