Patchick 90

(SAI 68; MWSC 974; DSH J0644.7-0031)

0.76 UTI

0.59

C_N

1.0

C_dens

0.5

C_C3

0.86

C_lit

1.0

C_dup

C3 classification BB

Number of members (P>50%) 68

Radius (P>50% members) 1.3 [arcmin]

C_N 0.59 Moderately populated
C_dens 1.0 Very dense
C_C3 0.5 Intermediate quality
C_lit 0.86 Well-studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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Patchick 90 is a moderately populated, very dense object of intermediate C3 quality. Its parallax locates it at a large distance, below the mid-plane, affected by moderate 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 well-studied in the literature.

Very distant Moderate extinction Near-solar metallicity Intermediate age

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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Patchick 90 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	–	101.18	-0.526	0.169	-0.188	1.076	78.12
Hu & Soubiran	2025	101.173	-0.527	–	–	–	–
Almeida et al.	2025	101.179	-0.532	–	–	–	–
Hunt & Reffert	2024	101.181	-0.524	0.191	-0.166	1.079	78.122
Cavallo et al.	2024	101.173	-0.528	0.179	–	–	–
Hunt & Reffert	2023	101.181	-0.524	0.191	-0.166	1.079	78.122
Just et al.	2023	101.15	-0.558	–	–	–	–
Dias et al.	2021	101.179	-0.532	0.1	-0.204	1.038	–
Cantat-Gaudin et al.	2020	101.181	-0.532	0.126	-0.15	1.063	–
Cantat-Gaudin & Anders	2020	101.181	-0.532	0.126	-0.15	1.063	–
Bica et al.	2019	101.182	-0.52	–	–	–	–
Cantat-Gaudin et al.	2018	101.181	-0.532	0.126	-0.15	1.063	–
Kharchenko et al.	2016	101.15	-0.558	–	–	–	–
Kharchenko et al.	2013	101.157	-0.56	–	-0.44	-2.28	–
Glushkova et al.	2010	101.178	-0.539	–	–	–	–
Kronberger et al.	2006	101.179	-0.518	–	–	–	–
Dias et al.	2002	101.179	-0.539	–	9.39	1.43	–

💡 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
Hu & Soubiran	2025	–	–	–	–	-0.300*	–	–	–
Almeida et al.	2025	7.25	1.94	–	676	–	286	–	–
Hunt & Reffert	2024	–	–	–	–	–	508*	–	–
Cavallo et al.	2024	4.35	2.67	–	832	-1.070	–	–	–
Hunt & Reffert	2023	4.81	1.74	1.79	859	–	–	–	–
Just et al.	2023	–	–	–	891	–	287	–	–
Dias et al.	2021	7.25	1.94	–	676	-0.129	–	–	–
Cantat-Gaudin et al.	2020	6.79	1.57	–	1096	–	–	–	–
Cantat-Gaudin & Anders	2020	6.46	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	6.46	–	–	–	–	–	–	–
Kharchenko et al.	2016	6.37	1.74	–	891	–	–	–	–
Kharchenko et al.	2013	6.37	1.74	–	891	–	–	–	–
Glushkova et al.	2010	6.31	1.27	–	891	–	–	–	–
Dias et al.	2002	6.31	1.27	–	891	–	–	–	–

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

Visualization

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