OCSN 306

(UPK 392)

0.04 UTI

0.81

C_N

1.0

C_dens

0.75

C_C3

0.0

C_lit

0.08

C_dup

N₅₀ (P>50% members) 258

Stellar density (N₅₀/rad) 8.4 [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 0.08 Very likely duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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OCSN 306 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 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. See table with shared members information.

Very close Low extinction Young

Data

🔍 Search references for OCSN 306 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–	92.573	14.921	4.716	5.841	-16.966	22.359
Qin et al.	2023	92.61	15.01	4.7	5.71	-16.77	22.83

💡 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–	0.24	0.25	–	35	–	–	–	–
Qin et al.	2023	0.24	0.25	–	35	–	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
Theia 116	91.9	92.58	14.93	4.77	5.89	-17.1	22.36	0.51
HSC 1553	90.7	92.79	14.34	4.63	5.64	-16.52	22.1	0.14

💡 Note: The % column shows the percentage of members that OCSN 306 shares with each listed object.

Visualization

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