OCSN 254

0.07 UTI

1.0

C_N

1.0

C_dens

1.0

C_C3

0.0

C_lit

0.12

C_dup

N₅₀ (P>50% members) 654

Stellar density (N₅₀/rad) 61.0 [N/pc²]

C3 classification AA

C_N 1.0 Very rich
C_dens 1.0 Very dense
C_C3 1.0 Very high quality
C_lit 0.0 Rarely studied
C_dup 0.12 Likely duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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OCSN 254 is a very rich, very dense 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 very young cluster (see Parameters). It was recently reported in the literature.

⚠️ Warning: This is 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 Very young

Data

🔍 Search references for OCSN 254 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–	122.376	-47.34	2.888	-6.4	9.605	14.613
Qin et al.	2023	122.4	-47.36	2.89	-6.46	9.62	16.32

💡 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–	0.36	0.25	–	11	–	–	–	–
Qin et al.	2023	0.36	0.25	–	11	–	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
Pozzo 1	87.8	122.39	-47.33	2.89	-6.41	9.61	15.22	1.0
CWWDL 14586	4.4	121.61	-48.0	2.74	-6.0	9.04	18.68	0.26
CWWDL 14592	4.3	123.01	-46.3	2.79	-6.35	9.19	15.12	0.16
CWWDL 14595	4.3	122.36	-46.77	2.73	-6.23	9.01	16.28	0.1
OC 0478	3.8	122.65	-47.46	2.98	-6.75	9.8	14.78	0.0
CWWDL 14593	2.1	123.1	-46.18	2.87	-6.51	9.41	15.29	0.11

💡 Note: The % column shows the percentage of members that OCSN 254 shares with each listed object.

Visualization

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