Patchick 89

(DSH J1959.5+4918; DC 6)

0.55 UTI

0.73

C_N

0.76

C_dens

0.75

C_C3

0.26

C_lit

1.0

C_dup

N_m (P>50%) 96

Core radius and density 1.7 [pc], 3.8 [pc^-2]

C3 classification AB

C_N 0.73 Moderately populated
C_dens 0.76 Dense
C_C3 0.75 High quality
C_lit 0.26 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Patchick 89 is a moderately populated, dense object of high C3 quality. Its parallax locates it at a large^* distance, well above the mid-plane, affected by low extinction. It is catalogued as a metal-poor, old cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~7.61 kpc) differs significantly from the median photometric distance (~4.58 kpc).

Distant Low extinction Metal-poor Old

Cavallo et al. (2024)
Silver sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.10 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.10 (50th percentile).

Bica et al. (2019)
Asterisms and cluster alikes by B. Alessi reported in DAML02.

Data

🔍 Search references for Patchick 89 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–	299.882	49.314	0.131	-2.996	-2.303	-53.154
Hunt & Reffert	2024	299.886	49.313	0.101	-3.018	-2.325	-53.136
Cavallo et al.	2024	299.891	49.304	0.114	–	–	–
Hunt & Reffert	2023	299.886	49.313	0.101	-3.018	-2.325	-53.136
Bica et al.	2019	299.882	49.31	–	–	–	–
Sampedro et al.	2017	299.887	49.314	–	1.39	-3.92	–
Tadross	2014	299.887	49.312	–	–	–	–
Bukowiecki et al.	2011	299.867	49.313	–	–	–	–
Kronberger et al.	2006	299.887	49.312	–	–	–	–
Dias et al.	2002	299.887	49.314	–	4.55	-5.38	–

💡 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–	4.585	0.835	1.87	1920	-0.810	104	–	–
Hunt & Reffert	2024	8.40	0.80	1.87	570	–	180⁽¹⁾	–	–
Cavallo et al.	2024	6.52	0.87	–	4467	-0.810	–	–	–
Hunt & Reffert	2023	8.41	0.80	1.87	570	–	–	–	–
Tadross	2014	2.65	0.66	–	1600	–	–	–	–
Bukowiecki et al.	2012	–	–	–	–	–	29	–	–
Bukowiecki et al.	2011	1.85⁽¹⁾	1.01	–	2239	–	–	–	–
Dias et al.	2002	1.84	1.04	–	2239	–	–	–	–

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

Visualization

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