CWNU 1505

0.18 UTI

0.27

C_N

0.07

C_dens

0.38

C_C3

0.1

C_lit

1.0

C_dup

N_m (P>50%) 27

Core radius and density 2.4 [pc], 0.3 [pc^-2]

C3 classification BC

C_N 0.27 Poorly populated
C_dens 0.07 Very loose
C_C3 0.38 Low quality
C_lit 0.1 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 1505 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age 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 Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.93 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.93 (50th percentile).

Data

🔍 Search references for CWNU 1505 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–	67.821	45.978	0.494	1.452	-1.177	12.943
Hu & Soubiran	2025	67.831	45.966	–	–	–	–
Hunt & Reffert	2024	67.861	46.013	0.489	1.424	-1.199	12.981
Cavallo et al.	2024	67.831	45.966	0.487	–	–	–
Hunt & Reffert	2023	67.861	46.013	0.489	1.424	-1.199	12.981
He et al.	2023	67.817	45.963	0.482	1.45	-1.186	12.94

💡 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–	1.91	2.25	1.15	627	0.125	200	–	–
Hu & Soubiran	2025	–	–	–	–	0.050⁽⁵⁾	–	–	–
Hunt & Reffert	2024	1.91	2.18	1.15	679	–	200⁽¹⁾	–	–
Cavallo et al.	2024	1.87	2.32	–	575	0.200	–	–	–
Hunt & Reffert	2023	1.91	2.17	1.15	679	–	–	–	–
He et al.	2023	2.14	2.60	–	316	–	–	–	–

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

Visualization

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