CWNU 23

0.21 UTI

0.0

C_N

0.17

C_dens

0.75

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 24

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

C3 classification AB

C_N 0.0 Sparse
C_dens 0.17 Very loose
C_C3 0.75 High 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 23 is a sparse, very loose object of high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by high extinction. It is catalogued as a massive, metal-rich, young cluster (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.

Distant High extinction Massive Metal-rich Young

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.37 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.37 (50th percentile).

Data

🔍 Search references for CWNU 23 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–	342.923	61.654	0.275	-2.878	-1.578	-73.685
Hunt & Reffert	2024	342.929	61.643	0.275	-2.896	-1.608	-55.017
Cavallo et al.	2024	342.9	61.517	0.274	–	–	–
Hunt & Reffert	2023	342.929	61.643	0.275	-2.896	-1.608	-55.017
He et al.	2022	342.912	61.65	0.26	-2.89	-1.58	-64.6

💡 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–	3.385	3.77	2.51	20	0.570	1297	–	–
Hunt & Reffert	2024	3.30	3.77	2.51	20	–	1297⁽¹⁾	–	–
Cavallo et al.	2024	3.89	3.49	–	25	0.720	–	–	–
Hunt & Reffert	2023	3.30	3.77	2.51	20	–	–	–	–
He et al.	2022	3.47	4.44	–	6	0.420	–	–	–

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

Visualization

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