CWNU 2597

0.20 UTI

0.0

C_N

0.18

C_dens

0.75

C_C3

0.03

C_lit

1.0

C_dup

N_m (P>50%) 18

Core radius and density 1.8 [pc], 0.9 [pc^-2]

C3 classification AB

C_N 0.0 Sparse
C_dens 0.18 Very loose
C_C3 0.75 High quality
C_lit 0.03 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 2597 is a sparse, very loose object of high C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a young 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 Young

Palma et al. (2025)
Part of multiple system G54, along with HSC_118, vdBergh_113 and CWNU_482.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.91 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.91 (50th percentile).

Data

🔍 Search references for CWNU 2597 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–	272.602	-21.197	0.664	0.948	-1.144	–
Hunt & Reffert	2024	272.576	-21.224	0.665	0.929	-1.156	–
Hunt & Reffert	2023	272.576	-21.224	0.665	0.929	-1.156	–
He et al.	2023	272.64	-21.189	0.666	0.949	-1.142	–

💡 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–	1.43	1.57	1.3	97	–	93	–	–
Hunt & Reffert	2024	1.43	1.57	1.30	97	–	93⁽¹⁾	–	–
Hunt & Reffert	2023	1.43	1.57	1.30	97	–	–	–	–
He et al.	2023	1.58	1.80	–	100	–	–	–	–

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

Visualization

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