UPK 180

0.61 UTI

0.52

C_N

0.42

C_dens

0.62

C_C3

0.75

C_lit

1.0

C_dup

C3 classification AC

Number of members (P>50%) 53

Radius (P>50% members) 20.1 [arcmin]

C_N 0.52 Moderately populated
C_dens 0.42 Loose
C_C3 0.62 Intermediate quality
C_lit 0.75 Well-studied
C_dup 1.0 Unique

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

Overview

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UPK 180 is a moderately populated, loose object of intermediate C3 quality. Its parallax locates it at a close distance, near 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 age and metallicity parameters (see Parameters). It is well-studied in the literature.

Close Moderate extinction Near-solar metallicity Intermediate age

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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for UPK 180 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	–	338.994	56.76	1.168	-0.564	0.212	-14.963
Li et al.	2025	339.051	56.771	1.166	-0.594	0.325	–
Almeida et al.	2025	339.096	56.793	–	–	–	–
Alfonso et al.	2024	341.663	57.897	1.066	-0.354	-0.544	–
Zhang et al.	2024	338.843	56.528	–	–	–	–
Hunt & Reffert	2024	338.843	56.528	1.171	-0.508	0.267	-17.58
Cavallo et al.	2024	339.368	56.787	1.17	–	–	–
Hunt & Reffert	2023	338.843	56.528	1.171	-0.508	0.267	-17.58
Almeida et al.	2023	339.132	56.801	–	–	–	–
Tarricq et al.	2022	339.02	56.689	1.162	-0.56	0.179	–
Dias et al.	2021	339.096	56.793	1.163	-0.589	0.386	-14.301
Cantat-Gaudin et al.	2020	339.051	56.771	1.166	-0.594	0.325	–
Cantat-Gaudin & Anders	2020	339.035	56.771	1.149	-0.552	0.419	–
Sim et al.	2019	339.018	56.673	–	-0.61	0.21	–

💡 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	0.86	1.08	–	74	-0.067	–	–	–
Almeida et al.	2025	0.84	1.20	–	137	–	197	–	–
Alfonso et al.	2024	0.84	0.56	–	226	-0.108	–	–	–
Zhang et al.	2024	–	–	–	–	-0.327*	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	47*	–	–
Cavallo et al.	2024	0.81	1.32	–	76	-0.370	–	–	–
Hunt & Reffert	2023	0.82	1.03	0.98	108	–	–	–	–
Almeida et al.	2023	0.84	1.26	–	176	-0.209	181*	0.74	–
Tarricq et al.	2022	0.82	–	–	251	–	–	–	–
Dias et al.	2021	0.84	1.20	–	137	-0.108	–	–	–
Cantat-Gaudin et al.	2020	0.84	0.56	–	245	–	–	–	–
Cantat-Gaudin & Anders	2020	0.85	–	–	–	–	–	–	–
Sim et al.	2019	0.83	–	–	355	–	–	–	–

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

Visualization

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