UBC 666

0.12 UTI

0.0

C_N

0.1

C_dens

0.5

C_C3

0.0

C_lit

1.0

C_dup

C3 classification BB

Number of members (P>50%) 20

Radius (P>50% members) 4.6 [arcmin]

C_N 0.0 Sparse
C_dens 0.1 Very loose
C_C3 0.5 Intermediate quality
C_lit 0.0 Rarely studied
C_dup 1.0 Unique

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

Overview

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UBC 666 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by high extinction. It is catalogued as a metal-rich, very young cluster (see Parameters). It is rarely studied in the literature.

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Distant High extinction Metal-rich Very young

Data

🔍 Search references for UBC 666 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	–	244.671	-51.566	0.21	-3.314	-4.534	–
Dias et al.	2021	244.704	-51.597	0.189	-3.265	-4.55	–
Cantat-Gaudin et al.	2020	244.723	-51.594	0.193	-3.281	-4.543	–
Castro-Ginard et al.	2020	244.719	-51.59	0.193	-3.256	-4.55	–

💡 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
Dias et al.	2021	5.52	3.33	–	5	0.548	–	–	–
Cantat-Gaudin et al.	2020	4.02	3.14	–	33	–	–	–	–

Visualization

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