OCSN 76

0.54 UTI

0.47

C_N

1.0

C_dens

0.75

C_C3

0.25

C_lit

1.0

C_dup

N₅₀ (P>50% members) 47

Stellar density (N₅₀/rad) 7.2 [N/pc²]

C3 classification AB

C_N 0.47 Poorly populated
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.25 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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OCSN 76 is a poorly populated, very dense object of high 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 (see Parameters). It was recently reported in the literature.

Close Low extinction Near-solar metallicity Young

Liu et al. (2025)
Classified as primordial binary cluster 322 along with CWNU_410, and of multiple system 25 along with CWNU_410 and CWNU_1227.

Palma et al. (2025)
Part of multiple system G230, along with CWNU_410 and Theia_319.

Cavallo et al. (2024)
Gold sample.

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

Data

🔍 Search references for OCSN 76 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–	99.563	-16.652	2.166	-4.161	4.953	25.502
Liu et al.	2025	99.64	-16.76	2.16	-4.3	5.02	24.22
Cavallo et al.	2024	100.419	-18.047	2.163	–	–	–
Hunt & Reffert	2023	99.638	-16.765	2.162	-4.295	5.017	24.223
Qin et al.	2023	99.67	-16.71	2.25	-4.52	4.73	26.37

💡 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–	0.515	0.325	0.75	37	0.090	–	–	–
Liu et al.	2025	0.56	0.13	–	37	–	–	–	–
Cavallo et al.	2024	0.47	0.47	–	14	0.090	–	–	–
Hunt & Reffert	2023	0.45	0.18	0.75	37	–	–	–	–
Qin et al.	2023	0.62	0.81	–	63	–	–	–	–

Visualization

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