UPK 169

0.78 UTI

0.64

C_N

1.0

C_dens

0.75

C_C3

0.75

C_lit

1.0

C_dup

C3 classification AB

Number of members (P>50%) 77

Radius (P>50% members) 13.6 [arcmin]

C_N 0.64 Moderately populated
C_dens 1.0 Very dense
C_C3 0.75 High 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 169 is a moderately populated, very dense object of high C3 quality. Its parallax locates it at a close distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, very young cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It is well-studied in the literature.

Close Moderate extinction Near-solar metallicity Very young

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 169 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	–	326.698	59.778	1.169	-1.997	-2.464	-14.553
Li et al.	2025	326.718	59.915	1.155	-2.004	-2.4	–
Almeida et al.	2025	326.752	59.796	–	–	–	–
Alfonso et al.	2024	326.695	59.77	1.142	-1.981	-2.507	–
Hunt & Reffert	2024	326.741	59.722	1.154	-2.001	-2.518	-15.695
Celli et al.	2024	326.718	59.915	–	–	–	–
Cavallo et al.	2024	326.596	59.871	1.173	–	–	–
Hunt & Reffert	2023	326.741	59.722	1.154	-2.001	-2.518	-15.695
Almeida et al.	2023	326.818	59.705	–	–	–	–
He et al.	2022	326.758	59.754	1.169	-1.956	-2.535	–
Dias et al.	2021	326.752	59.796	1.158	-2.009	-2.378	–
Cantat-Gaudin et al.	2020	326.718	59.915	1.155	-2.004	-2.4	–
Cantat-Gaudin & Anders	2020	326.794	59.803	1.158	-2.007	-2.398	–
Sim et al.	2019	326.749	59.848	–	-1.95	-2.36	–

💡 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	0.68	2.25	–	16	-0.163	–	–	–
Almeida et al.	2025	0.82	1.78	–	12	–	105	–	–
Alfonso et al.	2024	0.90	1.47	–	11	-0.024	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	319*	–	–
Celli et al.	2024	–	–	–	14	–	255	–	–
Cavallo et al.	2024	0.92	2.23	–	11	0.600	–	–	–
Hunt & Reffert	2023	0.82	2.52	2.49	7	–	–	–	–
Almeida et al.	2023	0.83	2.44	–	15	-0.286	358*	0.65	–
He et al.	2022	–	2.40	–	9	–	–	–	–
Dias et al.	2021	0.82	1.78	–	12	-0.024	–	–	–
Cantat-Gaudin et al.	2020	0.90	1.47	–	14	–	–	–	–
Cantat-Gaudin & Anders	2020	0.84	–	–	–	–	–	–	–
Sim et al.	2019	0.84	–	–	13	–	–	–	–

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

Visualization

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