UPK 79

0.49 UTI

0.25

C_N

0.4

C_dens

0.5

C_C3

0.65

C_lit

1.0

C_dup

N₅₀ (P>50% members) 25

Stellar density (N₅₀/rad) 2.0 [N/pc²]

C3 classification BB

C_N 0.25 Poorly populated
C_dens 0.4 Loose
C_C3 0.5 Intermediate quality
C_lit 0.65 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 79 is a poorly populated, loose object of intermediate C3 quality. Its parallax locates it at a close distance, below 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

Palma et al. (2025)
Classified as optical pair (not dynamically associated) P181, along with UPK_85.

Cavallo et al. (2024)
Gold sample.

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

Data

🔍 Search references for UPK 79 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–	303.988	21.471	1.071	-2.126	-5.417	-4.091
Li et al.	2025	303.989	21.447	1.072	-2.151	-5.426	–
Almeida et al.	2025	303.951	21.464	–	–	–	–
Alfonso et al.	2024	303.683	21.572	0.933	-1.575	-4.824	–
Zhang et al.	2024	303.968	21.572	–	–	–	–
Hunt & Reffert	2024	303.968	21.572	1.071	-2.129	-5.429	-3.746
Cavallo et al.	2024	304.002	21.458	1.07	–	–	–
Hunt & Reffert	2023	303.968	21.572	1.071	-2.129	-5.429	-3.746
Tarricq et al.	2022	303.962	21.528	1.031	-2.16	-5.396	–
Dias et al.	2021	303.951	21.464	1.08	-2.133	-5.435	6.61
Cantat-Gaudin et al.	2020	303.989	21.447	1.072	-2.151	-5.426	–
Cantat-Gaudin & Anders	2020	303.989	21.447	1.074	-2.116	-5.443	–
Sim et al.	2019	303.985	21.475	–	-2.1	-5.47	–

💡 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–	0.91	0.45	0.67	175	0.057	91	–	–
Li et al.	2025	1.00	0.45	–	312	0.240	–	–	–
Almeida et al.	2025	0.91	0.52	–	351	–	119	–	–
Alfonso et al.	2024	0.91	0.24	–	175	0.057	–	–	–
Zhang et al.	2024	–	–	–	–	-0.079⁽¹⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	63⁽¹⁾	–	–
Cavallo et al.	2024	0.93	0.79	–	158	0.070	–	–	–
Hunt & Reffert	2023	0.90	0.45	0.67	151	–	–	–	–
Tarricq et al.	2022	0.90	–	–	182	–	–	–	–
Dias et al.	2021	0.91	0.52	–	351	0.056	–	–	–
Cantat-Gaudin et al.	2020	0.92	0.24	–	174	–	–	–	–
Cantat-Gaudin & Anders	2020	0.91	–	–	–	–	–	–	–
Sim et al.	2019	0.91	–	–	63	–	–	–	–

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

Visualization

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