CWNU 222

0.12 UTI

0.0

C_N

0.35

C_dens

0.12

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 24

Core radius and density 0.8 [pc], 1.8 [pc^-2]

C3 classification DC

C_N 0.0 Sparse
C_dens 0.35 Loose
C_C3 0.12 Very 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 222 is a sparse, loose object of very low C3 quality. Its parallax locates it at a relatively close distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity 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.

Relatively close Low extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Data

🔍 Search references for CWNU 222 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–	101.999	-8.04	0.621	-1.944	-0.84	23.401
Hunt & Reffert	2024	101.993	-8.019	0.624	-1.943	-0.787	25.617
Cavallo et al.	2024	102.048	-8.123	0.615	–	–	–
Hunt & Reffert	2023	101.993	-8.019	0.624	-1.943	-0.787	25.617
He et al.	2022	101.986	-8.039	0.62	-1.93	-0.84	–

💡 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–	1.52	0.93	0.22	212	-0.190	147	–	–
Hunt & Reffert	2024	1.52	0.93	0.22	167	–	147⁽¹⁾	–	–
Cavallo et al.	2024	1.59	0.88	–	257	0.200	–	–	–
Hunt & Reffert	2023	1.52	0.93	0.22	167	–	–	–	–
He et al.	2022	1.32	1.27	–	501	-0.580	–	–	–

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

Visualization

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