UPK 418

0.26 UTI

0.0

C_N

0.13

C_dens

0.25

C_C3

0.45

C_lit

1.0

C_dup

N₅₀ (P>50% members) 19

Stellar density (N₅₀/rad) 0.7 [N/pc²]

C3 classification CC

C_N 0.0 Sparse
C_dens 0.13 Very loose
C_C3 0.25 Low quality
C_lit 0.45 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 418 is a sparse, very loose object of low C3 quality. Its parallax locates it at a close distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the absorption and age parameters (see Parameters). It is poorly studied in the literature.

Close Low extinction Near-solar metallicity Young

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

Data

🔍 Search references for UPK 418 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–	112.565	5.58	1.017	-2.629	-1.112	36.308
Almeida et al.	2025	112.5	5.576	–	–	–	–
Alfonso et al.	2024	112.615	5.705	1.14	-2.666	-1.555	–
Almeida et al.	2023	112.476	5.579	–	–	–	–
Dias et al.	2021	112.5	5.576	1.116	-2.643	-1.146	–
Cantat-Gaudin et al.	2020	112.48	5.605	1.111	-2.646	-0.983	–
Cantat-Gaudin & Anders	2020	112.39	5.557	1.12	-2.651	-1.17	–
Sim et al.	2019	112.561	5.618	–	-2.68	-1.6	–

💡 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–	0.87	0.06	–	89	-0.220	104	0.49	–
Almeida et al.	2025	0.87	0.20	–	197	–	76	–	–
Alfonso et al.	2024	0.92	0.01	–	17	-0.220	–	–	–
Almeida et al.	2023	0.82	0.06	–	100	-0.068	131⁽¹⁾	0.49	–
Tarricq et al.	2022	0.90	–	–	63	–	–	–	–
Dias et al.	2021	0.87	0.20	–	197	-0.220	–	–	–
Cantat-Gaudin et al.	2020	0.92	0.01	–	63	–	–	–	–
Cantat-Gaudin & Anders	2020	0.87	–	–	–	–	–	–	–
Sim et al.	2019	0.83	–	–	89	–	–	–	–

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

Visualization

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