CWNU 1564

0.55 UTI

0.41

C_N

1.0

C_dens

0.75

C_C3

0.3

C_lit

1.0

C_dup

N₅₀ (P>50% members) 41

Stellar density (N₅₀/rad) 9.3 [N/pc²]

C3 classification AB

C_N 0.41 Poorly populated
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.3 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

MOCA 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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CWNU 1564 is a poorly populated, very dense object of high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high 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 was recently reported in the literature.

Relatively close High extinction Near-solar metallicity Intermediate age

Palma et al. (2025)
Classified as optical pair P317, along with PHOC_14.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for CWNU 1564 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–	296.162	24.029	0.417	-0.583	-4.333	20.84
Hu & Soubiran	2025	296.192	24.068	–	–	–	–
Hunt & Reffert	2024	296.156	24.024	0.413	-0.572	-4.32	29.383
Cavallo et al.	2024	296.192	24.068	0.414	–	–	–
Hunt & Reffert	2023	296.156	24.024	0.413	-0.572	-4.32	29.383
He et al.	2023	296.171	24.047	0.416	-0.579	-4.332	20.84

💡 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–	2.2	3.88	1.8	355	0.195	347	–	–
Hu & Soubiran	2025	–	–	–	–	-0.060⁽⁵⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	347⁽¹⁾	–	–
Cavallo et al.	2024	1.92	3.25	–	661	0.450	–	–	–
Hunt & Reffert	2023	2.20	3.88	1.80	159	–	–	–	–
He et al.	2023	2.24	3.90	–	355	–	–	–	–

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

Visualization

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