CWNU 66

0.21 UTI

0.31

C_N

0.24

C_dens

0.38

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 31

Core radius and density 1.2 [pc], 1.2 [pc^-2]

C3 classification CB

C_N 0.31 Poorly populated
C_dens 0.24 Very loose
C_C3 0.38 Low 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 66 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a moderate distance, near 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: 0.86 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.86 (50th percentile).

Data

🔍 Search references for CWNU 66 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–	33.311	61.472	0.412	-0.067	-0.755	-45.33
Hunt & Reffert	2024	33.355	61.465	0.407	-0.094	-0.78	-45.332
Cavallo et al.	2024	33.339	61.478	0.41	–	–	–
Hunt & Reffert	2023	33.355	61.465	0.407	-0.094	-0.78	-45.332
He et al.	2022	33.307	61.454	0.41	-0.09	-0.76	-45.3

💡 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–	2.28	2.975	1.87	128	-0.159	435	–	–
Hunt & Reffert	2024	2.28	2.95	1.87	142	–	435⁽¹⁾	–	–
Cavallo et al.	2024	1.94	3.00	–	115	-0.390	–	–	–
Hunt & Reffert	2023	2.28	2.95	1.87	142	–	–	–	–
He et al.	2022	2.75	3.74	–	25	0.073	–	–	–

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

Visualization

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