UBC 57

0.69 UTI

0.53

C_N

1.0

C_dens

0.62

C_C3

0.65

C_lit

1.0

C_dup

C3 classification AC

Number of members (P>50%) 56

Radius (P>50% members) 3.7 [arcmin]

C_N 0.53 Moderately populated
C_dens 1.0 Very dense
C_C3 0.62 Intermediate quality
C_lit 0.65 Moderately studied
C_dup 1.0 Unique

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

Overview

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UBC 57 is a moderately populated, very dense object of intermediate C3 quality. Its parallax locates it at a relatively close distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, old cluster (see Parameters). It is moderately studied in the literature.

Note: This object shares a significant percentage of members with a later reported entry. See table with shared members information.

Relatively close Moderate extinction Near-solar metallicity Old

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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for UBC 57 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	–	62.976	42.734	0.506	3.134	-2.25	5.969
Hu & Soubiran	2025	62.934	42.728	–	–	–	–
Almeida et al.	2025	62.967	42.731	–	–	–	–
Zhang et al.	2024	62.976	42.721	–	–	–	–
Hunt & Reffert	2024	62.976	42.721	0.525	3.099	-2.287	5.121
Cavallo et al.	2024	62.934	42.729	0.523	–	–	–
Hunt & Reffert	2023	62.976	42.721	0.525	3.099	-2.287	5.121
Almeida et al.	2023	62.958	42.735	–	–	–	–
Dias et al.	2021	62.967	42.731	0.467	3.149	-2.23	5.209
Cantat-Gaudin et al.	2020	62.981	42.723	0.48	3.234	-2.274	–
Cantat-Gaudin & Anders	2020	62.981	42.723	0.48	3.234	-2.274	–
Castro-Ginard et al.	2019	62.962	42.722	0.481	3.191	-2.243	–

💡 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
Hu & Soubiran	2025	–	–	–	–	-0.070*	–	–	–
Almeida et al.	2025	1.60	1.52	–	1722	–	233	–	–
Zhang et al.	2024	–	–	–	–	-0.252*	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	193*	–	–
Cavallo et al.	2024	1.71	1.32	–	1413	0.030	–	–	–
Hunt & Reffert	2023	1.77	1.10	0.26	1393	–	–	–	–
Almeida et al.	2023	1.75	1.54	–	1648	-0.142	192*	0.59	–
Dias et al.	2021	1.60	1.52	–	1722	-0.152	–	–	–
Cantat-Gaudin et al.	2020	2.09	1.11	–	1514	–	–	–	–
Cantat-Gaudin & Anders	2020	1.97	–	–	–	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWWDL 3349	58.9	62.99	42.72	0.52	3.13	-2.24	5.44	0.0

💡 Note: The % column shows the percentage of members that UBC 57 shares with each listed object.

Visualization

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