CWNU 3984

0.21 UTI

0.35

C_N

0.07

C_dens

0.62

C_C3

0.0

C_lit

1.0

C_dup

C3 classification AC

Number of members (P>50%) 35

Radius (P>50% members) 1.3 [arcmin]

C_N 0.35 Poorly populated
C_dens 0.07 Very loose
C_C3 0.62 Intermediate quality
C_lit 0.0 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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CWNU 3984 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a very large^* distance, well below the mid-plane, affected by high extinction. It is catalogued as a young cluster (see Parameters). It was recently reported in the literature.

(*): The parallax distance estimate (~26.39 kpc) differs significantly from the median photometric distance (~8.71 kpc).

⚠️ 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.

Very distant High extinction Young

Data

🔍 Search references for CWNU 3984 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	–	127.498	-46.202	0.038	-1.625	2.214	132.541
He et al.	2023	127.489	-46.191	0.034	-1.625	2.234	132.54

💡 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]	Bfr	BSS
He et al.	2023	8.71	3.05	–	32	–	–	–	–

Visualization

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