OCSN 20

0.02 UTI

0.53

C_N

0.4

C_dens

1.0

C_C3

0.0

C_lit

0.05

C_dup

C3 classification AA

Number of members (P>50%) 56

Radius (P>50% members) 37.9 [arcmin]

C_N 0.53 Moderately populated
C_dens 0.4 Loose
C_C3 1.0 Very high quality
C_lit 0.0 Rarely studied
C_dup 0.05 Very likely duplicate

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

Overview

ℹ️

OCSN 20 is a moderately populated, loose object of very 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.

Close Low extinction Young

Data

🔍 Search references for OCSN 20 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	–	302.885	26.744	2.096	1.815	-9.289	-20.067
Qin et al.	2023	303.01	27.06	2.15	1.94	-9.4	-21.02

💡 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	0.52	0.34	–	71	–	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
Collinder 416	94.6	302.86	26.74	2.09	1.78	-9.28	-19.95	0.79

💡 Note: The % column shows the percentage of members that OCSN 20 shares with each listed object.

Visualization

ℹ️