UBC 323

0.37 UTI

0.85

C_N

1.0

C_dens

1.0

C_C3

0.0

C_lit

0.65

C_dup

C3 classification AA

Number of members (P>50%) 365

Radius (P>50% members) 8.3 [arcmin]

C_N 0.85 Rich
C_dens 1.0 Very dense
C_C3 1.0 Very high quality
C_lit 0.0 Rarely studied
C_dup 0.65 Likely unique

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

Overview

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UBC 323 is a rich, very dense object of very high C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by low extinction. It is catalogued as a massive, very young cluster (see Parameters). It is rarely studied in the literature.

Note: This is likely a unique object, which shares a moderate percentage of members with at least one previously reported entry. See table with shared members information.

Relatively close Low extinction Massive Very young

Data

🔍 Search references for UBC 323 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	–	253.972	-40.693	0.59	-0.231	-1.254	-21.029
Celli et al.	2024	253.94	-40.729	–	–	–	–
Cantat-Gaudin et al.	2020	253.94	-40.729	0.575	-0.232	-1.28	–
Castro-Ginard et al.	2020	253.895	-40.751	0.576	-0.228	-1.256	–

💡 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
Celli et al.	2024	–	–	–	9	–	1695	–	–
Cantat-Gaudin et al.	2020	1.50	0.72	–	9	–	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
ESO 332 13	34.8	254.11	-40.61	0.59	-0.12	-1.12	-21.73	0.42
VDBH 205	22.2	254.05	-40.64	0.58	-0.15	-1.1	-30.68	0.87
Collinder 316	15.6	253.7	-40.76	0.6	-0.28	-1.29	-24.59	0.28
ESO 332 08	11.0	253.7	-40.76	0.58	-0.27	-1.34	-18.45	0.66
OC 0674	6.6	253.7	-40.77	0.6	-0.28	-1.29	-22.14	0.0
HSC 2849	0.3	253.65	-40.99	0.6	-0.46	-1.59	-33.1	0.32

💡 Note: The % column shows the percentage of members that UBC 323 shares with each listed object.

Visualization

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