OCSN 11

0.19 UTI

0.25

C_N

0.18

C_dens

0.5

C_C3

0.0

C_lit

1.0

C_dup

C3 classification BB

Number of members (P>50%) 25

Radius (P>50% members) 61.1 [arcmin]

C_N 0.25 Poorly populated
C_dens 0.18 Very loose
C_C3 0.5 Intermediate quality
C_lit 0.0 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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OCSN 11 is a poorly populated, very loose object of intermediate 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.

Note: This object shares a moderate percentage of members with 2 later reported entries. See table with shared members information.

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Very close Low extinction Young

Data

🔍 Search references for OCSN 11 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	–	270.092	21.47	3.392	-1.336	-7.634	-18.059
Qin et al.	2023	270.27	22.07	3.36	-1.46	-7.91	-18.21

💡 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]	Bfr	BSS
Qin et al.	2023	0.36	0.56	–	56	–	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
LISC-III 3785	36.0	270.59	22.7	3.47	-1.32	-7.27	-18.74	0.15
HSC 381	4.0	270.96	19.47	3.23	-1.16	-8.03	-16.73	0.24

💡 Note: The % column shows the percentage of members that OCSN 11 shares with each listed object.

Visualization

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