CWNU 2543

0.52 UTI

0.76

C_N

0.73

C_dens

1.0

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 119

Core radius and density 2.0 [pc], 3.7 [pc^-2]

C3 classification AA

C_N 0.76 Rich
C_dens 0.73 Moderately dense
C_C3 1.0 Very high 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 2543 is a rich, moderately dense object of very high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high extinction. It is catalogued as a massive, 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.

Note: This object shares a small percentage of members with a later reported entry. See table with shared members information.

Relatively close High extinction Massive Near-solar metallicity Intermediate age

Palma et al. (2025)
Part of multiple system G50, along with CWNU_2221 and UBC_103.

Cavallo et al. (2024)
Wood sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD classes: 0.04 (50th percentile), false positive (human-assigned).

Hunt & Reffert (2023)
Classified as open cluster. CMD classes: 0.04 (50th percentile), false positive (human-assigned).

Data

🔍 Search references for CWNU 2543 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–	279.901	-7.043	0.287	0.023	-1.985	28.71
Hunt & Reffert	2024	279.903	-7.039	0.291	0.018	-2.001	43.004
Cavallo et al.	2024	279.898	-7.038	0.29	–	–	–
Hunt & Reffert	2023	279.903	-7.039	0.291	0.018	-2.001	43.004
He et al.	2023	279.897	-7.035	0.3	0.028	-1.991	28.04

💡 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–	2.96	4.915	3.17	274	-0.260	4670	–	–
Hunt & Reffert	2024	2.96	4.63	3.17	274	–	4670⁽¹⁾	–	–
Cavallo et al.	2024	3.52	5.20	–	65	-0.260	–	–	–
Hunt & Reffert	2023	2.96	4.63	3.17	274	–	–	–	–
He et al.	2023	2.88	5.60	–	282	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
HSC 245	15.1	279.9	-7.05	0.35	0.01	-1.95	26.09	0.03

💡 Note: The % column shows the percentage of members that CWNU 2543 shares with each listed object.

Visualization

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