TPK 1

(Teutsch-Patchick-Kronberger 1; Patchick 41; Ramakers 3)

0.20 UTI

0.0

C_N

0.14

C_dens

0.38

C_C3

0.25

C_lit

1.0

C_dup

N₅₀ (P>50% members) 23

Stellar density (N₅₀/rad) 0.7 [N/pc²]

C3 classification CB

C_N 0.0 Sparse
C_dens 0.14 Very loose
C_C3 0.38 Low quality
C_lit 0.25 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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TPK 1 is a sparse, very loose object of low 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 poorly studied in the literature.

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Close Low extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as a moving group.

Data

🔍 Search references for TPK 1 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–	354.757	47.605	1.962	3.638	-1.081	-10.121
Zhang et al.	2024	354.613	47.422	–	–	–	–
Cavallo et al.	2024	354.755	48.084	1.952	–	–	–
Hunt & Reffert	2023	354.613	47.422	1.954	3.496	-1.029	-12.121
Bica et al.	2019	354.84	47.486	–	–	–	–

💡 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–	0.5	0.405	0.37	306	0.021	–	–	–
Zhang et al.	2024	–	–	–	–	-0.168⁽¹⁾	–	–	–
Cavallo et al.	2024	0.51	0.67	–	339	0.210	–	–	–
Hunt & Reffert	2023	0.49	0.14	0.37	274	–	–	–	–

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

Visualization

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