CWNU 173

0.08 UTI

0.0

C_N

0.07

C_dens

0.25

C_C3

0.03

C_lit

1.0

C_dup

N_m (P>50%) 14

Core radius and density 2.5 [pc], 0.4 [pc^-2]

C3 classification CC

C_N 0.0 Sparse
C_dens 0.07 Very loose
C_C3 0.25 Low quality
C_lit 0.03 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 173 is a sparse, very loose object of low C3 quality. Its parallax locates it at a close distance, above the mid-plane, affected by low extinction. It is catalogued as a metal-poor, intermediate-age cluster, but with a large variance across recent sources for the age parameter (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.

Close Low extinction Metal-poor Intermediate age

Hunt & Reffert (2024)
Classified as open cluster. CMD classes: 0.97 (50th percentile), true positive? (human-assigned).

Hunt & Reffert (2023)
Classified as open cluster. CMD classes: 0.97 (50th percentile), true positive? (human-assigned).

Data

🔍 Search references for CWNU 173 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–	87.096	39.279	1.116	0.197	-1.414	-3.325
Hunt & Reffert	2024	87.042	39.263	1.161	0.272	-1.355	–
Hunt & Reffert	2023	87.042	39.263	1.161	0.272	-1.355	–
He et al.	2022	87.153	39.223	1.12	0.18	-1.41	–

💡 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–	0.84	0.38	0.66	290	-0.580	51	–	–
Hunt & Reffert	2024	0.84	0.38	0.66	290	–	51⁽¹⁾	–	–
Hunt & Reffert	2023	0.84	0.38	0.66	290	–	–	–	–
He et al.	2022	0.74	1.20	–	50	-0.580	–	–	–

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

Visualization

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