Ruprecht 164

(VDBH 119; MWSC 1951; OCL 858; vdBergh-Hagen 119; ESO 129 23; FSR 1588)

0.96 UTI

0.78

C_N

1.0

C_dens

1.0

C_C3

1.0

C_lit

1.0

C_dup

C3 classification AA

Number of members (P>50%) 190

Radius (P>50% members) 1.8 [arcmin]

C_N 0.78 Rich
C_dens 1.0 Very dense
C_C3 1.0 Very high quality
C_lit 1.0 Very well-studied
C_dup 1.0 Unique

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

Overview

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Ruprecht 164 is a rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, above 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 age, metallicity, and mass parameters (see Parameters). It is very well-studied in the literature.

Distant Low extinction Near-solar metallicity Old

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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Ruprecht 164 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	–	172.608	-60.75	0.209	-6.854	1.35	0.76
Li et al.	2025	172.616	-60.752	0.194	-6.83	1.321	–
Hu & Soubiran	2025	172.624	-60.753	–	–	–	–
Almeida et al.	2025	172.644	-60.754	–	–	–	–
Hunt & Reffert	2024	172.606	-60.746	0.207	-6.856	1.38	-0.689
Cavallo et al.	2024	172.624	-60.753	0.209	–	–	–
Hunt & Reffert	2023	172.606	-60.746	0.207	-6.856	1.38	-0.689
Just et al.	2023	172.703	-60.746	–	–	–	–
Dias et al.	2021	172.644	-60.754	0.194	-6.829	1.317	–
Cantat-Gaudin et al.	2020	172.616	-60.752	0.194	-6.83	1.321	–
Cantat-Gaudin & Anders	2020	172.616	-60.752	0.194	-6.83	1.321	–
Soubiran et al.	2018	172.616	-60.752	–	–	–	7.91
Bica et al.	2019	172.632	-60.734	–	–	–	–
Cantat-Gaudin et al.	2018	172.616	-60.752	0.194	-6.83	1.321	–
Kharchenko et al.	2016	172.703	-60.746	–	–	–	–
Dias et al.	2014	172.713	-60.733	–	-5.22	-1.66	–
Kharchenko et al.	2013	172.71	-60.75	–	-5.12	1.95	-3.0
Piskunov et al.	2008	172.702	-60.724	–	–	–	–
Kharchenko et al.	2005	172.71	-60.73	–	-2.05	6.05	–
Kharchenko et al.	2003	172.72	-60.75	–	-0.89	5.03	–
Dias et al.	2002	172.713	-60.733	–	-0.89	5.03	–

💡 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
Li et al.	2025	4.58	1.62	–	950	-0.060	–	–	–
Hu & Soubiran	2025	–	–	–	–	-0.240*	–	–	–
Almeida et al.	2025	3.91	1.33	–	1256	–	987	–	–
Hunt & Reffert	2024	–	–	–	–	–	2221*	–	–
Cavallo et al.	2024	2.61	1.75	–	1585	-0.380	–	–	–
Hunt & Reffert	2023	4.25	1.65	1.85	407	–	–	–	–
Just et al.	2023	–	–	–	50	–	97	–	–
Dias et al.	2021	3.91	1.33	–	1256	0.099	–	–	–
Cantat-Gaudin et al.	2020	3.91	0.86	–	1698	–	–	–	–
Cantat-Gaudin & Anders	2020	4.48	–	–	–	–	–	–	–
Soubiran et al.	2018	4.48	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	4.48	–	–	–	–	–	–	–
Kharchenko et al.	2016	1.30	0.34	–	50	–	–	–	–
Kharchenko et al.	2013	1.30	0.34	–	50	–	–	–	–
Piskunov et al.	2008	0.78	0.34	–	1000	–	–	–	–
Kharchenko et al.	2005	0.78	0.34	–	1000	–	–	–	–
Kharchenko et al.	2003	1.00	0.31	–	–	–	–	–	–
Dias et al.	2002	0.78	0.34	–	1000	–	–	–	–

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

Visualization

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