UBC 649

0.07 UTI

0.0

C_N

0.04

C_dens

0.25

C_C3

0.03

C_lit

1.0

C_dup

N_m (P>50%) 21

Core radius and density 2.3 [pc], 0.2 [pc^-2]

C3 classification CC

C_N 0.0 Sparse
C_dens 0.04 Very loose
C_C3 0.25 Low quality
C_lit 0.03 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 649 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate distance, well above the mid-plane, affected by low extinction. It is catalogued as an old cluster (see Parameters). It is rarely studied in the literature, with no articles listed in the last 6 years.

⚠️ 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.

Relatively close Low extinction Old

Dias et al. (2021)
Likely not a real open cluster.

Data

🔍 Search references for UBC 649 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–	147.707	-34.344	0.398	-5.602	2.298	-1.372
Cantat-Gaudin et al.	2020	147.701	-34.344	0.441	-5.623	2.354	–
Castro-Ginard et al.	2020	147.718	-34.363	0.446	-5.639	2.329	–

💡 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–	2.48	0.91	–	4365	–	–	–	–
Kounkel et al.	2020	2.48	0.91	–	4365	–	–	–	–

Visualization

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