CWNU 2558

0.45 UTI

0.45

C_N

0.46

C_dens

0.75

C_C3

0.3

C_lit

1.0

C_dup

N₅₀ (P>50% members) 45

Stellar density (N₅₀/rad) 2.3 [N/pc²]

C3 classification AB

C_N 0.45 Poorly populated
C_dens 0.46 Loose
C_C3 0.75 High quality
C_lit 0.3 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

MOCA 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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CWNU 2558 is a poorly populated, loose object of high C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by low 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.

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

Relatively close Low extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for CWNU 2558 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–	101.229	0.888	0.673	-1.492	0.797	-20.599
Zhang et al.	2024	101.249	0.864	–	–	–	–
Hunt & Reffert	2024	101.249	0.864	0.667	-1.479	0.786	-20.635
Cavallo et al.	2024	101.262	0.903	0.667	–	–	–
Hunt & Reffert	2023	101.249	0.864	0.667	-1.479	0.786	-20.635
He et al.	2023	101.29	0.889	0.673	-1.479	0.797	38.93

💡 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–	1.45	0.88	1.1	209	-0.029	209	–	–
Zhang et al.	2024	–	–	–	–	-0.138⁽¹⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	209⁽¹⁾	–	–
Cavallo et al.	2024	1.47	0.84	–	209	0.080	–	–	–
Hunt & Reffert	2023	1.41	0.88	1.10	78	–	–	–	–
He et al.	2023	1.45	1.05	–	501	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWWDL 14140	55.6	101.23	0.95	0.67	-1.49	0.8	-20.6	0.0

💡 Note: The % column shows the percentage of members that CWNU 2558 shares with each listed object.

Visualization

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