CWNU 522

(OCSN 109)

0.36 UTI

0.0

C_N

0.42

C_dens

0.5

C_C3

0.45

C_lit

1.0

C_dup

N₅₀ (P>50% members) 23

Stellar density (N₅₀/rad) 2.1 [N/pc²]

C3 classification BB

C_N 0.0 Sparse
C_dens 0.42 Loose
C_C3 0.5 Intermediate quality
C_lit 0.45 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 522 is a sparse, loose object of intermediate C3 quality. Its parallax locates it at a very close distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It is poorly studied in the literature.

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

Very close Low extinction Near-solar metallicity Young

Liu et al. (2025)
Classified as tidal capture (resonant trapping binary) 80 along with OC_0322.

Palma et al. (2025)
Classified as tidal capture (resonant trapping pair) P377, along with OC_0322.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for CWNU 522 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–	75.972	8.076	2.567	0.979	-4.463	17.919
Zhang et al.	2024	75.678	8.081	–	–	–	–
Hunt & Reffert	2024	75.678	8.081	2.575	0.883	-4.484	17.201
Cavallo et al.	2024	76.157	8.949	2.57	–	–	–
Hunt & Reffert	2023	75.678	8.081	2.575	0.883	-4.484	17.201
Qin et al.	2023	76.0	8.17	2.56	0.91	-4.44	17.72
He et al.	2022	76.21	8.808	2.537	0.845	-4.487	–
He et al.	2022	75.807	8.069	2.76	1.01	-4.58	21.5

💡 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–	0.41	0.285	0.57	36	-0.015	64	–	–
Liu et al.	2025	0.51	0.16	–	37	–	–	–	–
Zhang et al.	2024	–	–	–	–	-0.015⁽¹⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	64⁽¹⁾	–	–
Cavallo et al.	2024	0.41	0.58	–	19	0.110	–	–	–
Hunt & Reffert	2023	0.37	0.17	0.57	36	–	–	–	–
Qin et al.	2023	0.45	0.40	–	45	–	–	–	–
He et al.	2022	–	0.75	–	40	–	–	–	–
He et al.	2022	0.31	0.12	–	25	-0.419	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
LISC-III 3611	60.0	76.33	9.03	2.53	0.81	-4.54	15.56	0.17

💡 Note: The % column shows the percentage of members that CWNU 522 shares with each listed object.

Visualization

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