CWNU 498

0.12 UTI

0.0

C_N

0.08

C_dens

0.38

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 21

Core radius and density 2.7 [pc], 0.4 [pc^-2]

C3 classification CB

C_N 0.0 Sparse
C_dens 0.08 Very loose
C_C3 0.38 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 498 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by high extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the age and metallicity parameters (see Parameters). It is rarely studied 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 Young

Cavallo et al. (2024)
Silver sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.06 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.06 (50th percentile).

Data

🔍 Search references for CWNU 498 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–	344.861	61.079	0.428	-1.545	-1.0	–
Hunt & Reffert	2024	344.839	61.086	0.429	-1.555	-1.007	–
Cavallo et al.	2024	344.848	61.039	0.428	–	–	–
Hunt & Reffert	2023	344.839	61.086	0.429	-1.555	-1.007	–
He et al.	2022	344.812	61.055	0.42	-1.55	-1.01	–

💡 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–	2.185	3.33	2.41	78	-0.240	345	–	–
Hunt & Reffert	2024	2.18	3.33	2.41	118	–	345⁽¹⁾	–	–
Cavallo et al.	2024	2.19	3.20	–	38	0.100	–	–	–
Hunt & Reffert	2023	2.18	3.33	2.41	118	–	–	–	–
He et al.	2022	4.27	4.63	–	2	-0.580	–	–	–

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

Visualization

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