UBC 650

0.23 UTI

0.0

C_N

0.16

C_dens

0.75

C_C3

0.13

C_lit

1.0

C_dup

N_m (P>50%) 19

Core radius and density 2.0 [pc], 0.8 [pc^-2]

C3 classification AB

C_N 0.0 Sparse
C_dens 0.16 Very loose
C_C3 0.75 High quality
C_lit 0.13 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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UBC 650 is a sparse, very loose object of high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, 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 Moderate extinction Near-solar metallicity Young

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Data

🔍 Search references for UBC 650 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–	145.144	-49.704	0.294	-4.69	3.285	28.732
Hunt & Reffert	2024	145.122	-49.684	0.286	-4.652	3.3	–
Cavallo et al.	2024	145.124	-49.7	0.284	–	–	–
Hunt & Reffert	2023	145.122	-49.684	0.286	-4.652	3.3	–
Cantat-Gaudin et al.	2020	145.123	-49.685	0.264	-4.694	3.256	–
Castro-Ginard et al.	2020	145.129	-49.704	0.258	-4.687	3.253	–

💡 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–	3.05	1.21	0.525	95	0.200	197	–	–
Hunt & Reffert	2024	3.12	1.21	0.52	95	–	197⁽¹⁾	–	–
Cavallo et al.	2024	2.78	1.22	–	170	0.200	–	–	–
Hunt & Reffert	2023	3.12	1.21	0.53	95	–	–	–	–
Cantat-Gaudin et al.	2020	3.05	0.78	–	78	–	–	–	–
Kounkel et al.	2020	2.93	1.68	–	93	–	–	–	–

(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.

Visualization

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