CWNU 3991

0.14 UTI

0.39

C_N

0.05

C_dens

0.25

C_C3

0.0

C_lit

1.0

C_dup

N_m (P>50%) 39

Core radius and density 3.0 [pc], 0.2 [pc^-2]

C3 classification CC

C_N 0.39 Poorly populated
C_dens 0.05 Very loose
C_C3 0.25 Low 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 3991 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a large distance, above the mid-plane, affected by moderate extinction. It is catalogued as an old 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.

Distant Moderate extinction Old

Data

🔍 Search references for CWNU 3991 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–	41.279	62.139	0.165	-0.237	0.561	-38.106
He et al.	2023	41.32	62.139	0.166	-0.198	0.582	-36.36

💡 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–	4.37	2.2	–	1259	–	–	–	–
He et al.	2023	4.37	2.20	–	1259	–	–	–	–

Visualization

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