CWNU 40

0.22 UTI

0.37

C_N

0.09

C_dens

0.62

C_C3

0.0

C_lit

1.0

C_dup

N_m (P>50%) 37

Core radius and density 3.4 [pc], 0.4 [pc^-2]

C3 classification AC

C_N 0.37 Poorly populated
C_dens 0.09 Very loose
C_C3 0.62 Intermediate quality
C_lit 0.0 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 40 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, old cluster (see Parameters). It is rarely studied in the literature.

Note: This object shares a significant percentage of members with a later reported entry. See table with shared members information.

⚠️ 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.

Close Low extinction Near-solar metallicity Old

Data

🔍 Search references for CWNU 40 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–	316.604	46.827	0.779	-1.426	-4.442	1.941
He et al.	2022	316.596	46.853	0.78	-1.42	-4.46	0.2

💡 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–	0.95	0.76	–	1000	-0.279	–	–	–
He et al.	2022	0.95	0.76	–	1000	-0.279	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
Theia 3327	59.5	316.6	46.77	0.78	-1.43	-4.41	1.73	0.02

💡 Note: The % column shows the percentage of members that CWNU 40 shares with each listed object.

Visualization

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