CWNU 1566

0.09 UTI

0.33

C_N

0.5

C_dens

0.38

C_C3

0.0

C_lit

0.36

C_dup

N₅₀ (P>50% members) 33

Stellar density (N₅₀/rad) 2.5 [N/pc²]

C3 classification CB

C_N 0.33 Poorly populated
C_dens 0.5 Moderately dense
C_C3 0.38 Low quality
C_lit 0.0 Rarely studied
C_dup 0.36 Possibly duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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CWNU 1566 is a poorly populated, moderately dense object of low C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high extinction. It is catalogued as a metal-rich, very young cluster (see Parameters). It was recently reported in the literature.

⚠️ Warning: This is possibly a duplicate object, which shares a significant percentage of members with at least one previously reported entry. See table with shared members information.

Distant High extinction Metal-rich Very young

Palma et al. (2025)
Classified as genetic pair P199, along with HSC_860.

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.48 (50th percentile).

Data

🔍 Search references for CWNU 1566 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–	345.852	60.034	0.313	-3.75	-2.759	–
Hunt & Reffert	2024	345.867	60.064	0.319	-3.788	-2.759	–
Cavallo et al.	2024	345.851	60.026	0.317	–	–	–
Hunt & Reffert	2023	345.867	60.064	0.319	-3.788	-2.759	–
He et al.	2023	345.862	60.031	0.313	-3.75	-2.761	–

💡 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–	3.39	3.24	2.01	16	0.600	225	–	–
Hunt & Reffert	2024	–	–	–	–	–	225⁽¹⁾	–	–
Cavallo et al.	2024	3.94	3.13	–	16	0.600	–	–	–
Hunt & Reffert	2023	3.10	3.24	2.01	19	–	–	–	–
He et al.	2023	3.39	3.70	–	6	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
BDSB 38	63.6	345.89	60.04	0.31	-3.77	-2.76	–	0.16

💡 Note: The % column shows the percentage of members that CWNU 1566 shares with each listed object.

Visualization

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