UBC 670

0.54 UTI

0.3

C_N

1.0

C_dens

0.5

C_C3

0.44

C_lit

1.0

C_dup

C3 classification BB

Number of members (P>50%) 30

Radius (P>50% members) 4.1 [arcmin]

C_N 0.3 Poorly populated
C_dens 1.0 Very dense
C_C3 0.5 Intermediate quality
C_lit 0.44 Poorly studied
C_dup 1.0 Unique

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

Overview

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UBC 670 is a poorly populated, very dense object of intermediate C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is poorly studied in the literature.

Relatively close Moderate extinction Near-solar metallicity Young

Almeida et al. (2025)
Mass determination: good fit. Isochrone match: intermediate fit.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for UBC 670 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	–	253.098	-44.418	0.551	0.22	-1.109	–
Almeida et al.	2025	253.077	-44.41	–	–	–	–
Hunt & Reffert	2024	253.107	-44.423	0.562	0.181	-1.102	–
Cavallo et al.	2024	253.077	-44.425	0.559	–	–	–
Hunt & Reffert	2023	253.107	-44.423	0.562	0.181	-1.102	–
Dias et al.	2021	253.077	-44.41	0.512	0.262	-1.05	–
Cantat-Gaudin et al.	2020	253.093	-44.432	0.497	0.293	-1.092	–
Castro-Ginard et al.	2020	253.071	-44.422	0.496	0.282	-1.104	–

💡 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
Almeida et al.	2025	1.99	1.99	–	61	–	165	–	–
Hunt & Reffert	2024	–	–	–	–	–	270*	–	–
Cavallo et al.	2024	1.54	1.75	–	457	0.120	–	–	–
Hunt & Reffert	2023	1.68	1.52	0.63	131	–	–	–	–
Dias et al.	2021	1.99	1.99	–	61	0.431	–	–	–

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

Visualization

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