CWNU 2155

0.06 UTI

0.0

C_N

0.04

C_dens

0.25

C_C3

0.0

C_lit

0.96

C_dup

N_m (P>50%) 20

Core radius and density 3.6 [pc], 0.2 [pc^-2]

C3 classification DB

C_N 0.0 Sparse
C_dens 0.04 Very loose
C_C3 0.25 Low quality
C_lit 0.0 Rarely studied
C_dup 0.96 Unique

📥 Members 📊 Colab 🔬 Bayestar19

MOCA 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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CWNU 2155 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate distance, near 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 a unique object, which shares a very 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=0.96) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Relatively close Moderate extinction Very young

Data

🔍 Search references for CWNU 2155 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–	344.077	58.556	0.299	-3.512	-2.289	–
He et al.	2023	344.065	58.538	0.306	-3.506	-2.29	–

💡 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–	2.82	2.6	–	11	–	–	–	–
He et al.	2023	2.82	2.60	–	11	–	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
HSC 849	12.0	344.2	58.79	0.25	-3.4	-2.13	–	0.12
BDSB 35	4.0	344.07	58.52	0.32	-3.81	-2.52	-47.74	0.15
BDSB 36	4.0	344.69	58.78	0.31	-3.5	-2.4	-68.6	0.07

💡 Note: The % column shows the percentage of members that CWNU 2155 shares with each listed object.

Visualization

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