OC 0322

0.58 UTI

0.32

C_N

1.0

C_dens

1.0

C_C3

0.3

C_lit

1.0

C_dup

N₅₀ (P>50% members) 32

Stellar density (N₅₀/rad) 33.7 [N/pc²]

C3 classification AA

C_N 0.32 Poorly populated
C_dens 1.0 Very dense
C_C3 1.0 Very 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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OC 0322 is a poorly populated, very dense object of very high C3 quality. Its parallax locates it at a very close distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, very young cluster, but with a large variance across recent sources for the absorption and metallicity parameters (see Parameters). It is poorly studied in the literature.

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

Very close Moderate extinction Near-solar metallicity Very young

Liu et al. (2025)
Classified as tidal capture (resonant trapping binary) 80 along with CWNU_522.

Palma et al. (2025)
Classified as tidal capture (resonant trapping pair) P377, along with CWNU_522.

Cavallo et al. (2024)
Silver sample.

Hunt & Reffert (2024)
Classified as a moving group.

Data

🔍 Search references for OC 0322 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–	79.442	7.178	2.537	2.231	-3.705	11.82
Zhang et al.	2024	79.418	7.164	–	–	–	–
Cavallo et al.	2024	79.551	7.224	2.545	–	–	–
Hunt & Reffert	2023	79.418	7.164	2.55	2.291	-3.666	6.219
Hao et al.	2022	79.413	7.153	2.552	2.356	-3.735	14.728

💡 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–	0.43	1.025	1.76	5	0.170	–	–	–
Liu et al.	2025	0.61	0.16	–	2	–	–	–	–
Zhang et al.	2024	–	–	–	–	-0.228⁽¹⁾	–	–	–
Cavallo et al.	2024	0.43	1.38	–	8	0.170	–	–	–
Hunt & Reffert	2023	0.38	0.90	1.76	5	–	–	–	–
Hao et al.	2022	–	1.15	–	5	0.498	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWNU 216	78.1	79.42	7.17	2.54	2.22	-3.7	14.33	0.02

💡 Note: The % column shows the percentage of members that OC 0322 shares with each listed object.

Visualization

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