OCSN 65

0.57 UTI

0.81

C_N

1.0

C_dens

1.0

C_C3

0.31

C_lit

0.82

C_dup

C3 classification AA

Number of members (P>50%) 255

Radius (P>50% members) 32.1 [arcmin]

C_N 0.81 Rich
C_dens 1.0 Very dense
C_C3 1.0 Very high quality
C_lit 0.31 Poorly studied
C_dup 0.82 Very likely unique

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

Overview

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OCSN 65 is a rich, very dense object of very high C3 quality. Its parallax locates it at a very close distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, very young cluster (see Parameters). It was recently reported in the literature.

Note: This is very likely a unique object, which shares a small percentage of members with at least one previously reported entry, and a small percentage with at least one entry reported in the same catalogue. See table with shared members information.

Very close Low extinction Near-solar metallicity Very young

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for OCSN 65 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	–	83.789	-1.805	2.366	-1.311	0.921	27.08
Zhang et al.	2024	83.764	-2.155	–	–	–	–
Hunt & Reffert	2024	83.764	-2.155	2.365	-1.258	0.93	33.161
Cavallo et al.	2024	83.749	-1.836	2.362	–	–	–
Hunt & Reffert	2023	83.764	-2.155	2.365	-1.258	0.93	33.161
Qin et al.	2023	83.88	-1.79	2.37	-1.34	0.93	26.34

💡 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
Zhang et al.	2024	–	–	–	–	-0.133*	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	52*	–	–
Cavallo et al.	2024	0.44	0.85	–	5	-0.190	–	–	–
Hunt & Reffert	2023	0.41	0.36	0.58	13	–	–	–	–
Qin et al.	2023	0.52	0.59	–	14	–	–	–	–

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
Gulliver 6	17.6	83.34	-1.63	2.41	-0.07	-0.24	28.06	0.68
OCSN 194	14.5	83.32	-1.64	2.42	-0.06	-0.25	28.06	0.02
OCSN 61	0.4	84.06	-0.59	2.56	-1.03	-0.63	29.9	0.51

💡 Note: The % column shows the percentage of members that OCSN 65 shares with each listed object.

Visualization

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