UPK 93

0.77 UTI

0.53

C_N

1.0

C_dens

0.75

C_C3

0.78

C_lit

1.0

C_dup

N₅₀ (P>50% members) 56

Stellar density (N₅₀/rad) 5.9 [N/pc²]

C3 classification AB

C_N 0.53 Moderately populated
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.78 Well-studied
C_dup 1.0 Unique

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

Overview

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UPK 93 is a moderately populated, very dense object of high C3 quality. Its parallax locates it at a close distance, near 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 well-studied in the literature.

Close Low 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 93 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–	300.312	29.97	1.422	-0.841	-8.249	13.871
Li et al.	2025	300.324	29.971	1.414	-0.863	-8.206	–
Almeida et al.	2025	300.314	29.949	–	–	–	–
Alfonso et al.	2024	300.337	30.052	1.35	-0.853	-8.172	–
Zhang et al.	2024	300.315	29.945	–	–	–	–
Hunt & Reffert	2024	300.315	29.945	1.376	-0.888	-8.14	16.017
Cavallo et al.	2024	300.437	30.134	1.377	–	–	–
Hunt & Reffert	2023	300.315	29.945	1.376	-0.888	-8.14	16.017
Almeida et al.	2023	300.177	30.031	–	–	–	–
He et al.	2022	300.324	29.972	1.423	-0.83	-8.308	–
Dias et al.	2021	300.314	29.949	1.411	-0.867	-8.166	14.051
Cantat-Gaudin et al.	2020	300.324	29.971	1.414	-0.863	-8.206	–
Cantat-Gaudin & Anders	2020	300.312	29.971	1.4	-0.882	-8.153	–
Sim et al.	2019	300.309	29.96	–	-0.85	-8.28	–

💡 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–	0.69	0.36	0.44	564	-0.094	121	0.79	–
Li et al.	2025	0.75	0.58	–	476	-0.347	–	–	–
Almeida et al.	2025	0.68	0.36	–	575	–	110	–	–
Alfonso et al.	2024	0.69	0.32	–	676	-0.094	–	–	–
Zhang et al.	2024	–	–	–	–	-0.070⁽¹⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	121⁽¹⁾	–	–
Cavallo et al.	2024	0.76	0.54	–	309	0.450	–	–	–
Hunt & Reffert	2023	0.68	0.17	0.44	564	–	–	–	–
Almeida et al.	2023	0.64	0.41	–	583	-0.228	166⁽¹⁾	0.79	–
He et al.	2022	–	0.30	–	794	–	–	–	–
Tarricq et al.	2022	0.68	–	–	550	–	–	–	–
Dias et al.	2021	0.68	0.36	–	575	-0.094	–	–	–
Cantat-Gaudin et al.	2020	0.69	0.32	–	513	–	–	–	–
Cantat-Gaudin & Anders	2020	0.70	–	–	–	–	–	–	–
Sim et al.	2019	0.69	–	–	398	–	–	–	–

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

Visualization

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