UPK 54

0.78 UTI

0.75

C_N

1.0

C_dens

0.75

C_C3

0.7

C_lit

1.0

C_dup

N₅₀ (P>50% members) 106

Stellar density (N₅₀/rad) 6.7 [N/pc²]

C3 classification AB

C_N 0.75 Rich
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.7 Moderately studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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UPK 54 is a rich, very dense object of high C3 quality. Its parallax locates it at a close distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It is moderately studied in the literature.

Close Moderate extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

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

Data

🔍 Search references for UPK 54 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–	286.129	15.73	1.203	-0.569	-5.886	-3.225
Li et al.	2025	286.157	15.689	1.172	-0.558	-5.854	–
Almeida et al.	2025	286.169	15.645	–	–	–	–
Alfonso et al.	2024	286.407	15.258	1.114	-0.57	-5.937	–
Hunt & Reffert	2024	286.254	15.722	1.209	-0.575	-5.912	-4.904
Cavallo et al.	2024	286.192	15.714	1.214	–	–	–
Hunt & Reffert	2023	286.254	15.722	1.209	-0.575	-5.912	-4.904
Almeida et al.	2023	286.216	15.663	–	–	–	–
He et al.	2022	286.161	15.761	1.218	-0.539	-5.899	–
Tarricq et al.	2022	286.073	15.779	1.221	-0.551	-5.89	–
Dias et al.	2021	286.169	15.645	1.166	-0.556	-5.901	36.043
Cantat-Gaudin et al.	2020	286.157	15.689	1.172	-0.558	-5.854	–
Cantat-Gaudin & Anders	2020	286.132	15.682	1.189	-0.559	-5.864	–
Sim et al.	2019	286.112	15.681	–	-0.57	-5.88	–

💡 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–	0.81	1.07	0.6	117	0.320	326	0.83	–
Li et al.	2025	0.83	0.99	–	142	0.359	–	–	–
Almeida et al.	2025	0.81	1.07	–	171	–	341	–	–
Alfonso et al.	2024	0.81	0.94	–	100	0.320	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	256⁽¹⁾	–	–
Cavallo et al.	2024	0.87	1.35	–	89	0.320	–	–	–
Hunt & Reffert	2023	0.80	1.17	0.60	77	–	–	–	–
Almeida et al.	2023	0.80	1.25	–	202	-0.188	326⁽¹⁾	0.83	–
He et al.	2022	–	1.40	–	79	–	–	–	–
Tarricq et al.	2022	0.79	–	–	120	–	–	–	–
Dias et al.	2021	0.81	1.07	–	171	0.321	–	–	–
Cantat-Gaudin et al.	2020	0.81	0.94	–	117	–	–	–	–
Cantat-Gaudin & Anders	2020	0.82	–	–	–	–	–	–	–
Sim et al.	2019	0.83	–	–	79	–	–	–	–

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

Visualization

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