CWNU 2738

0.17 UTI

0.0

C_N

0.2

C_dens

0.5

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 22

Core radius and density 1.9 [pc], 1.0 [pc^-2]

C3 classification BB

C_N 0.0 Sparse
C_dens 0.2 Very loose
C_C3 0.5 Intermediate quality
C_lit 0.06 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 2738 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high extinction. It is catalogued as a metal-rich, young cluster, but with a large variance across recent sources for the age parameter (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 High extinction Metal-rich Young

Cavallo et al. (2024)
Silver sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.02 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.02 (50th percentile).

Data

🔍 Search references for CWNU 2738 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–	158.765	-58.919	0.212	-5.481	3.013	-36.806
Hunt & Reffert	2024	158.746	-58.917	0.21	-5.479	3.009	-36.766
Cavallo et al.	2024	158.773	-58.918	0.209	–	–	–
Hunt & Reffert	2023	158.746	-58.917	0.21	-5.479	3.009	-36.766
He et al.	2023	158.771	-58.928	0.225	-5.46	3.015	–

💡 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–	4.31	3.775	2.6	42	0.510	880	–	–
Hunt & Reffert	2024	4.31	3.75	2.60	15	–	880⁽¹⁾	–	–
Cavallo et al.	2024	4.43	4.23	–	69	0.510	–	–	–
Hunt & Reffert	2023	4.31	3.75	2.60	15	–	–	–	–
He et al.	2023	3.80	3.80	–	631	–	–	–	–

(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.

Visualization

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