CWNU 2728

0.14 UTI

0.0

C_N

0.07

C_dens

0.5

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 23

Core radius and density 2.3 [pc], 0.4 [pc^-2]

C3 classification BB

C_N 0.0 Sparse
C_dens 0.07 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 2728 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age 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 Moderate extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.96 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.96 (50th percentile).

Data

🔍 Search references for CWNU 2728 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–	103.531	-7.909	0.403	-1.436	1.057	–
Hunt & Reffert	2024	103.515	-7.906	0.4	-1.443	1.033	–
Cavallo et al.	2024	103.57	-7.941	0.403	–	–	–
Hunt & Reffert	2023	103.515	-7.906	0.4	-1.443	1.033	–
He et al.	2023	103.509	-7.914	0.402	-1.402	1.058	–

💡 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–	2.22	1.56	2.05	122	0.470	200	–	–
Hunt & Reffert	2024	2.20	1.56	2.05	122	–	200⁽¹⁾	–	–
Cavallo et al.	2024	2.29	1.32	–	316	0.470	–	–	–
Hunt & Reffert	2023	2.20	1.56	2.05	122	–	–	–	–
He et al.	2023	2.24	1.80	–	32	–	–	–	–

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

Visualization

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