CWNU 2028

0.10 UTI

0.0

C_N

0.11

C_dens

0.25

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 22

Core radius and density 2.9 [pc], 0.6 [pc^-2]

C3 classification DB

C_N 0.0 Sparse
C_dens 0.11 Very loose
C_C3 0.25 Low 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 2028 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high extinction. It is catalogued as a near-solar metallicity, very 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.

Relatively close High extinction Near-solar metallicity Very young

Cavallo et al. (2024)
Silver sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.10 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.10 (50th percentile).

Data

🔍 Search references for CWNU 2028 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–	240.503	-54.039	0.336	-3.24	-4.181	-29.297
Hunt & Reffert	2024	240.525	-54.018	0.327	-3.213	-4.165	32.389
Cavallo et al.	2024	240.593	-53.932	0.329	–	–	–
Hunt & Reffert	2023	240.525	-54.018	0.327	-3.213	-4.165	32.389
He et al.	2023	240.508	-54.022	0.333	-3.249	-4.183	–

💡 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–	2.71	3.2	2.81	18	-0.430	471	–	–
Hunt & Reffert	2024	2.71	3.20	2.81	18	–	471⁽¹⁾	–	–
Cavallo et al.	2024	2.38	3.16	–	126	-0.430	–	–	–
Hunt & Reffert	2023	2.71	3.20	2.81	18	–	–	–	–
He et al.	2023	3.55	3.90	–	3	–	–	–	–

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

Visualization

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