CWNU 1666

0.20 UTI

0.32

C_N

0.07

C_dens

0.5

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 32

Core radius and density 4.2 [pc], 0.3 [pc^-2]

C3 classification BB

C_N 0.32 Poorly populated
C_dens 0.07 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 1666 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young 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 Young

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD classes: 0.99 (50th percentile), true positive (human-assigned).

Hunt & Reffert (2023)
Classified as open cluster. CMD classes: 0.99 (50th percentile), true positive (human-assigned).

Data

🔍 Search references for CWNU 1666 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–	94.364	4.945	0.439	-0.242	-2.004	22.405
Hunt & Reffert	2024	94.313	5.013	0.433	-0.243	-1.957	22.366
Cavallo et al.	2024	94.378	4.944	0.431	–	–	–
Hunt & Reffert	2023	94.313	5.013	0.433	-0.243	-1.957	22.366
He et al.	2023	94.381	4.943	0.442	-0.254	-2.004	–

💡 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–	2.13	1.715	1.01	95	0.360	210	–	–
Hunt & Reffert	2024	2.13	1.65	1.01	95	–	210⁽¹⁾	–	–
Cavallo et al.	2024	2.28	1.78	–	115	0.360	–	–	–
Hunt & Reffert	2023	2.13	1.65	1.01	95	–	–	–	–
He et al.	2023	2.09	2.00	–	40	–	–	–	–

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

Visualization

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