OCSN 2

0.46 UTI

0.54

C_N

1.0

C_dens

0.75

C_C3

0.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 57

Stellar density (N₅₀/rad) 6.7 [N/pc²]

C3 classification AB

C_N 0.54 Moderately populated
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.0 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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OCSN 2 is a moderately populated, very dense object of 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 very young cluster (see Parameters). It was recently reported in the literature.

Note: This object shares a large percentage of members with a later reported entry. See table with shared members information.

Very close Low extinction Very young

Data

🔍 Search references for OCSN 2 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–	257.334	-17.775	4.796	-5.662	-11.393	-16.51
Qin et al.	2023	257.35	-17.54	4.78	-5.68	-11.25	-20.12

💡 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–	0.19	0.0	–	14	–	–	–	–
Qin et al.	2023	0.19	0.00	–	14	–	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
Theia 70	84.2	257.21	-18.02	4.77	-5.66	-11.51	-18.62	0.05

💡 Note: The % column shows the percentage of members that OCSN 2 shares with each listed object.

Visualization

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