Ruprecht 134

(VDBH 252; MWSC 2730; OCL 4; vdBergh-Hagen 252; ESO 456 01)

0.87 UTI

0.81

C_N

1.0

C_dens

1.0

C_C3

0.77

C_lit

1.0

C_dup

N₅₀ (P>50% members) 256

Stellar density (N₅₀/rad) 37.2 [N/pc²]

C3 classification AA

C_N 0.81 Rich
C_dens 1.0 Very dense
C_C3 1.0 Very high quality
C_lit 0.77 Well-studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Ruprecht 134 is a rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, old cluster, but with a large variance across recent sources for the age, metallicity, and mass parameters (see Parameters). It is well-studied in the literature.

Note: This object contains blue stragglers according to at least one source.

Relatively close Moderate extinction Massive Near-solar metallicity Old Contains BSS

Palma et al. (2025)
Classified as optical pair P565, along with UFMG_92.

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

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.62 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.62 (50th percentile).

Data

🔍 Search references for Ruprecht 134 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–	268.184	-29.534	0.399	-1.613	-2.444	-41.907
Li et al.	2025	268.184	-29.537	0.391	-1.653	-2.432	–
Hu & Soubiran	2025	268.177	-29.53	–	–	–	–
Almeida et al.	2025	268.186	-29.529	–	–	–	–
Hunt & Reffert	2024	268.175	-29.535	0.392	-1.607	-2.441	-49.743
Cavallo et al.	2024	268.177	-29.53	0.392	–	–	–
Hunt & Reffert	2023	268.175	-29.535	0.392	-1.607	-2.441	-49.743
Just et al.	2023	268.171	-29.551	–	–	–	–
Dias et al.	2022	268.18	-29.544	0.422	-1.621	-2.431	-42.115
Jadhav & Subramaniam	2021	268.184	-29.537	–	–	–	–
Dias et al.	2021	268.186	-29.529	0.39	-1.651	-2.437	-42.294
Cantat-Gaudin et al.	2020	268.184	-29.537	0.391	-1.653	-2.432	–
Sánchez et al.	2020	268.179	-29.55	–	-1.564	-2.385	–
Cantat-Gaudin & Anders	2020	268.184	-29.537	0.391	-1.653	-2.432	–
Soubiran et al.	2018	268.184	-29.537	–	–	–	-42.19
Bica et al.	2019	268.176	-29.549	–	–	–	–
Cantat-Gaudin et al.	2018	268.184	-29.537	0.391	-1.653	-2.432	–
Dias et al.	2018	–	–	–	-0.5	-2.38	–
Sampedro et al.	2017	268.179	-29.55	-0.84	-2.09	–	–
Kharchenko et al.	2016	268.171	-29.551	–	–	–	–
Dias et al.	2014	268.179	-29.55	–	-1.03	-2.25	–
Kharchenko et al.	2013	268.179	-29.55	–	-0.28	0.56	–
Dias et al.	2002	268.179	-29.55	–	-0.98	-2.22	–
Lynga	1987	268.196	-29.559	–	–	–	–
van den Bergh & Hagen	1975	267.4	-29.55	–	–	–	–

💡 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–	2.38	2.255	1.67	1171	-0.017	2302	–	1
Li et al.	2025	2.15	2.04	–	1171	-0.141	–	–	–
Hu & Soubiran	2025	–	–	–	–	-0.140⁽⁵⁾	–	–	–
Almeida et al.	2025	2.21	1.77	–	1380	–	347	–	–
Hunt & Reffert	2024	–	–	–	–	–	3886⁽¹⁾	–	–
Cavallo et al.	2024	2.32	2.53	–	1445	-1.180	–	–	–
Hunt & Reffert	2023	2.41	2.47	1.67	203	–	–	–	–
Just et al.	2023	–	–	–	76	–	105925	–	–
Spina et al.	2022	–	–	–	–	0.291	–	–	–
Dias et al.	2022	2.03⁽¹⁾	1.61⁽¹⁾	–	1276⁽¹⁾	0.130⁽¹⁾	–	–	–
Jadhav & Subramaniam	2021	2.25	1.15	–	1660	–	718	–	1⁽¹⁾
Dias et al.	2021	2.21	1.77	–	1380	0.106	–	–	–
Cantat-Gaudin et al.	2020	2.25	1.15	–	1660	–	–	–	–
Kounkel et al.	2020	2.71	2.79	–	191	–	–	–	–
Cantat-Gaudin & Anders	2020	2.38	–	–	–	–	–	–	–
Soubiran et al.	2018	2.38	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	2.38	–	–	–	–	–	–	–
Kharchenko et al.	2016	6.66	2.76	–	76	–	–	–	–
Kharchenko et al.	2013	6.66	2.76	–	76	–	–	–	–
Dias et al.	2002	6.66	2.76	–	76	–	–	–	–

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

Visualization

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