CWNU 4158

0.18 UTI

0.47

C_N

0.07

C_dens

0.38

C_C3

0.0

C_lit

1.0

C_dup

C3 classification CB

Number of members (P>50%) 47

Radius (P>50% members) 6.0 [arcmin]

C_N 0.47 Poorly populated
C_dens 0.07 Very loose
C_C3 0.38 Low 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 4158 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a large^* distance, well below the mid-plane, affected by moderate extinction. It is catalogued as an intermediate-age cluster (see Parameters). It was recently reported in the literature.

(*): The parallax distance estimate (~6.87 kpc) differs significantly from the median photometric distance (~4.37 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.

Distant Moderate extinction Intermediate age

Data

🔍 Search references for CWNU 4158 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	–	274.139	-26.761	0.146	-0.798	-2.517	-37.274
He et al.	2023	274.14	-26.766	0.151	-0.814	-2.508	-92.19

💡 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	4.37	2.50	–	631	–	–	–	–

Visualization

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