Patchick 12

0.13 UTI

0.75

C_N

0.3

C_dens

0.75

C_C3

0.1

C_lit

0.33

C_dup

N_m (P>50%) 110

Core radius and density 2.0 [pc], 1.5 [pc^-2]

C3 classification AB

C_N 0.75 Rich
C_dens 0.3 Loose
C_C3 0.75 High quality
C_lit 0.1 Rarely studied
C_dup 0.33 Possibly duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Patchick 12 is a rich, loose object of high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, old cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It was recently reported in the literature.

⚠️ Warning: This is possibly a duplicate object, which shares a significant percentage of members with at least one previously reported entry. See table with shared members information.

Relatively close Low extinction Near-solar metallicity Old

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.98 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.98 (50th percentile).

Bica et al. (2019)
The Preliminary Amateur Open Cluster Catalog, Version 08/03/2003.

Data

🔍 Search references for Patchick 12 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–	31.116	54.36	0.366	-2.283	-0.256	-37.933
Hu & Soubiran	2025	31.154	54.36	–	–	–	–
Zhang et al.	2024	31.091	54.363	–	–	–	–
Hunt & Reffert	2024	31.091	54.363	0.364	-2.289	-0.222	-44.592
Cavallo et al.	2024	31.154	54.36	0.364	–	–	–
Hunt & Reffert	2023	31.091	54.363	0.364	-2.289	-0.222	-44.592

💡 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–	2.49	0.42	1.36	1026	-0.160	319	–	–
Hu & Soubiran	2025	–	–	–	–	-0.160⁽⁵⁾	–	–	–
Zhang et al.	2024	–	–	–	–	-0.006⁽¹⁾	–	–	–
Hunt & Reffert	2024	2.49	0.42	1.36	1027	–	319⁽¹⁾	–	–
Cavallo et al.	2024	2.26	1.15	–	832	-0.510	–	–	–
Hunt & Reffert	2023	2.49	0.42	1.36	1026	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
UBC 44	67.3	31.12	54.37	0.37	-2.28	-0.26	-37.93	0.4
CWWDL 3347	35.5	31.11	54.36	0.37	-2.3	-0.25	-37.93	0.0

💡 Note: The % column shows the percentage of members that Patchick 12 shares with each listed object.

Visualization

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