UPK 80

0.64 UTI

0.42

C_N

0.61

C_dens

0.75

C_C3

0.7

C_lit

1.0

C_dup

C3 classification AB

Number of members (P>50%) 42

Radius (P>50% members) 14.3 [arcmin]

C_N 0.42 Poorly populated
C_dens 0.61 Moderately dense
C_C3 0.75 High quality
C_lit 0.7 Moderately studied
C_dup 1.0 Unique

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

Overview

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UPK 80 is a poorly populated, moderately dense object of high C3 quality. Its parallax locates it at a close distance, above the mid-plane, affected by low 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 Low extinction Near-solar metallicity Intermediate age

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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for UPK 80 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	–	293.932	28.169	1.121	1.207	-1.055	-15.227
Li et al.	2025	293.914	28.16	1.127	1.217	-1.024	–
Almeida et al.	2025	293.865	28.264	–	–	–	–
Alfonso et al.	2024	293.995	28.266	1.077	1.206	-1.054	–
Zhang et al.	2024	293.843	28.128	–	–	–	–
Hunt & Reffert	2024	293.843	28.128	1.087	1.254	-0.948	-18.033
Cavallo et al.	2024	293.971	28.221	1.092	–	–	–
Hunt & Reffert	2023	293.843	28.128	1.087	1.254	-0.948	-18.033
Tarricq et al.	2022	293.914	28.16	1.141	1.222	-1.054	–
Dias et al.	2021	293.865	28.264	1.115	1.229	-1.015	-44.645
Cantat-Gaudin et al.	2020	293.914	28.16	1.127	1.217	-1.024	–
Cantat-Gaudin & Anders	2020	293.901	28.272	1.107	1.23	-1.024	–
Sim et al.	2019	293.834	28.131	–	1.19	-1.01	–

💡 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
Li et al.	2025	0.94	0.44	–	538	0.356	–	–	–
Almeida et al.	2025	0.88	0.48	–	708	–	96	–	–
Alfonso et al.	2024	0.90	0.44	–	570	0.215	–	–	–
Zhang et al.	2024	–	–	–	–	-0.070*	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	62*	–	–
Cavallo et al.	2024	0.83	0.64	–	407	0.210	–	–	–
Hunt & Reffert	2023	0.88	0.54	0.81	262	–	–	–	–
Tarricq et al.	2022	0.88	–	–	389	–	–	–	–
Dias et al.	2021	0.88	0.48	–	708	0.215	–	–	–
Cantat-Gaudin et al.	2020	0.90	0.44	–	380	–	–	–	–
Cantat-Gaudin & Anders	2020	0.88	–	–	–	–	–	–	–
Sim et al.	2019	0.88	–	–	79	–	–	–	–

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

Visualization

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