CWNU 2498

0.19 UTI

0.27

C_N

0.13

C_dens

0.38

C_C3

0.1

C_lit

1.0

C_dup

N_m (P>50%) 27

Core radius and density 1.6 [pc], 0.6 [pc^-2]

C3 classification CB

C_N 0.27 Poorly populated
C_dens 0.13 Very loose
C_C3 0.38 Low quality
C_lit 0.1 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 2498 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by moderate extinction. It is catalogued as a metal-poor, intermediate-age cluster (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 Metal-poor Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.43 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.43 (50th percentile).

Data

🔍 Search references for CWNU 2498 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–	194.788	-60.686	0.337	-8.56	-1.8	-6.42
Hu & Soubiran	2025	194.775	-60.676	–	–	–	–
Hunt & Reffert	2024	194.774	-60.681	0.331	-8.549	-1.808	-6.758
Cavallo et al.	2024	194.775	-60.676	0.332	–	–	–
Hunt & Reffert	2023	194.774	-60.681	0.331	-8.549	-1.808	-6.758
He et al.	2023	194.787	-60.687	0.342	-8.549	-1.775	-6.42

💡 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–	2.88	1.55	0.86	934	-0.590	157	–	–
Hunt & Reffert	2024	2.99	1.55	0.86	867	–	157⁽¹⁾	–	–
Cavallo et al.	2024	2.77	2.02	–	1096	-0.590	–	–	–
Hunt & Reffert	2023	2.99	1.55	0.86	867	–	–	–	–
He et al.	2023	2.69	1.55	–	1000	–	–	–	–

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

Visualization

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