OCSN 32

0.37 UTI

0.55

C_N

0.11

C_dens

1.0

C_C3

0.1

C_lit

1.0

C_dup

N_m (P>50%) 60

Core radius and density 4.1 [pc], 0.6 [pc^-2]

C3 classification AA

C_N 0.55 Moderately populated
C_dens 0.11 Very loose
C_C3 1.0 Very high quality
C_lit 0.1 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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OCSN 32 is a moderately populated, very loose object of very 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, very young cluster (see Parameters). It was recently reported in the literature.

Very close Low extinction Near-solar metallicity Very young

Palma et al. (2025)
Classified as optical pair P524, along with HSC_745.

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as moving group. CMD class: 1.00 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Data

🔍 Search references for OCSN 32 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–	340.658	40.113	2.324	-2.059	-5.231	-19.158
Zhang et al.	2024	340.368	40.21	–	–	–	–
Swiggum et al.	2024	340.368	40.21	2.318	-2.062	-5.245	-16.848
Cavallo et al.	2024	340.65	40.048	2.322	–	–	–
Hunt & Reffert	2023	340.368	40.21	2.318	-2.062	-5.245	-18.991
Qin et al.	2023	340.75	40.06	2.32	-1.99	-5.17	-14.8

💡 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	0.41	0.56	9	-0.136	90	–	–
Zhang et al.	2024	–	–	–	–	-0.042⁽¹⁾	–	–	–
Swiggum et al.	2024	0.43	–	–	9	–	90	–	–
Cavallo et al.	2024	0.43	0.75	–	5	-0.230	–	–	–
Hunt & Reffert	2023	0.42	0.21	0.56	9	–	–	–	–
Qin et al.	2023	0.51	0.41	–	16	–	–	–	–

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

Visualization

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