OCSN 256

0.01 UTI

0.81

C_N

1.0

C_dens

1.0

C_C3

0.0

C_lit

0.01

C_dup

N₅₀ (P>50% members) 247

Stellar density (N₅₀/rad) 13.1 [N/pc²]

C3 classification AA

C_N 0.81 Rich
C_dens 1.0 Very dense
C_C3 1.0 Very high quality
C_lit 0.0 Rarely studied
C_dup 0.01 Very likely duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

ℹ️

OCSN 256 is a rich, very dense object of very high C3 quality. Its parallax locates it at a very close distance, above the mid-plane, affected by low extinction. It is catalogued as a young cluster (see Parameters). It was recently reported in the literature.

⚠️ Warning: This is very likely a duplicate object, which shares a large percentage of members with at least one previously reported entry, and a small percentage with at least one entry reported in the same catalogue. See table with shared members information.

Very close Low extinction Young

Data

🔍 Search references for OCSN 256 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	303.59	45.594	2.965	3.626	1.558	-7.389
Qin et al.	2023	303.58	45.58	2.97	3.56	1.58	-7.86

💡 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–	0.35	0.09	–	40	–	–	–	–
Qin et al.	2023	0.35	0.09	–	40	–	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
RSG5	98.8	303.5	45.6	2.96	3.62	1.55	-7.39	0.89
LISC-III 3723	77.3	304.16	46.65	2.92	3.51	1.72	-7.45	0.27
OCSN 23	10.9	305.13	48.62	2.86	3.16	1.97	-7.7	0.52

💡 Note: The % column shows the percentage of members that OCSN 256 shares with each listed object.

Visualization

ℹ️