OCSN 87

0.21 UTI

0.31

C_N

0.22

C_dens

0.5

C_C3

0.0

C_lit

1.0

C_dup

C3 classification DA

Number of members (P>50%) 31

Radius (P>50% members) 130.6 [arcmin]

C_N 0.31 Poorly populated
C_dens 0.22 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 87 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a very close distance, near the mid-plane, affected by low extinction. It is catalogued as an intermediate-age cluster (see Parameters). It was recently reported in the literature.

⚠️ 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 Intermediate age

Data

🔍 Search references for OCSN 87 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	–	115.45	-71.08	7.146	-1.885	-0.526	-0.041
Qin et al.	2023	115.13	-69.23	7.47	-1.97	-0.47	0.31

💡 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	0.19	0.53	–	355	–	–	–	–

Visualization

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