OCSN 247

0.01 UTI

0.81

C_N

1.0

C_dens

0.75

C_C3

0.0

C_lit

0.02

C_dup

N₅₀ (P>50% members) 251

Stellar density (N₅₀/rad) 32.2 [N/pc²]

C3 classification AB

C_N 0.81 Rich
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.0 Rarely studied
C_dup 0.02 Very likely duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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OCSN 247 is a rich, very dense object of high C3 quality. Its parallax locates it at a very close^* distance, near the mid-plane, affected by moderate extinction. It is catalogued as an intermediate-age 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. See table with shared members information.

(*): The parallax distance estimate (~0.39 kpc) differs significantly from the median photometric distance (~1.19 kpc).

Relatively close Moderate extinction Intermediate age

Data

🔍 Search references for OCSN 247 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–	277.887	-3.947	2.595	2.012	-9.016	-8.033
Qin et al.	2023	277.91	-3.89	2.62	2.03	-9.04	-9.45

💡 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–	1.19	2.76	–	631	–	–	–	–
Qin et al.	2023	1.19	2.76	–	631	–	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
PHOC 39	98.4	277.88	-3.95	2.57	2.0	-8.98	-7.34	0.51
Theia 23	45.8	277.9	-3.95	2.61	2.08	-9.0	-8.26	0.0
CWWL 3567	29.1	277.91	-3.91	2.61	2.06	-9.03	-7.18	0.0

💡 Note: The % column shows the percentage of members that OCSN 247 shares with each listed object.

Visualization

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