CWNU 1658

0.10 UTI

0.0

C_N

0.04

C_dens

0.5

C_C3

0.0

C_lit

0.88

C_dup

C3 classification BB

Number of members (P>50%) 19

Radius (P>50% members) 9.3 [arcmin]

C_N 0.0 Sparse
C_dens 0.04 Very loose
C_C3 0.5 Intermediate quality
C_lit 0.0 Rarely studied
C_dup 0.88 Very likely unique

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

Overview

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CWNU 1658 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by moderate extinction. It is catalogued as a very young cluster (see Parameters). It was recently reported in the literature.

Note: This is very likely a unique object, which shares a small percentage of members with at least one previously reported entry. See table with shared members information.

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=0.88) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Distant Moderate extinction Very young

Data

🔍 Search references for CWNU 1658 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	–	178.25	-61.478	0.287	-6.237	0.779	-19.98
He et al.	2023	178.234	-61.488	0.285	-6.227	0.789	–

💡 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	3.47	1.65	–	10	–	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWWDL 9421	20.0	178.76	-61.65	0.32	-6.2	0.84	–	0.09
UBC 1510	12.0	178.78	-61.65	0.31	-6.19	0.73	–	0.52

💡 Note: The % column shows the percentage of members that CWNU 1658 shares with each listed object.

Visualization

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