UPK 526

0.31 UTI

0.0

C_N

0.17

C_dens

0.75

C_C3

0.32

C_lit

1.0

C_dup

N₅₀ (P>50% members) 24

Stellar density (N₅₀/rad) 0.8 [N/pc²]

C3 classification AB

C_N 0.0 Sparse
C_dens 0.17 Very loose
C_C3 0.75 High quality
C_lit 0.32 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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UPK 526 is a sparse, very loose object of high 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, young cluster (see Parameters). It is poorly studied in the literature.

Close Low extinction Near-solar metallicity Young

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

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as moving group. CMD class: 0.97 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.97 (50th percentile).

Data

🔍 Search references for UPK 526 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–	115.351	-52.81	1.746	-7.985	7.449	19.483
Li et al.	2025	115.198	-52.839	1.712	-8.0	7.415	–
Almeida et al.	2025	115.268	-52.91	–	–	–	–
Alfonso et al.	2024	114.395	-52.836	1.727	-7.84	7.688	–
Swiggum et al.	2024	115.946	-52.836	1.75	-7.774	7.804	17.232
Cavallo et al.	2024	113.782	-52.946	1.755	–	–	–
Hunt & Reffert	2023	115.946	-52.836	1.75	-7.774	7.804	14.398
Dias et al.	2021	115.268	-52.91	1.722	-8.006	7.434	23.348
Spina et al.	2021	115.19	-52.84	1.715	-7.971	7.426	–
Cantat-Gaudin et al.	2020	115.198	-52.839	1.712	-8.0	7.415	–
Cantat-Gaudin & Anders	2020	115.274	-52.829	1.727	-8.006	7.464	–
Sim et al.	2019	115.237	-52.774	–	-7.98	7.42	–

💡 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–	0.57	0.47	0.99	29	-0.027	187	–	–
Li et al.	2025	0.55	0.47	–	21	-0.066	–	–	–
Almeida et al.	2025	0.56	0.58	–	38	–	74	–	–
Alfonso et al.	2024	0.63	0.45	–	20	-0.030	–	–	–
Swiggum et al.	2024	0.56	–	–	29	–	300	–	–
Cavallo et al.	2024	0.61	0.68	–	14	0.080	–	–	–
Hunt & Reffert	2023	0.54	0.46	0.99	29	–	–	–	–
Spina et al.	2022	–	–	–	–	-0.021	–	–	–
Dias et al.	2021	0.56	0.58	–	38	-0.030	–	–	–
Spina et al.	2021	0.58	–	–	31	-0.024⁽²⁰⁾	–	–	–
Cantat-Gaudin et al.	2020	0.63	0.45	–	31	–	–	–	–
Cantat-Gaudin & Anders	2020	0.57	–	–	–	–	–	–	–
Sim et al.	2019	0.57	–	–	20	–	–	–	–

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

Visualization

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