Ruprecht 50

(VDBH 17; MWSC 1424; OCL 698; vdBergh-Hagen 17; ESO 430 12; FoF 960)

0.88 UTI

0.66

C_N

1.0

C_dens

0.75

C_C3

1.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 82

Stellar density (N₅₀/rad) 16.1 [N/pc²]

C3 classification AB

C_N 0.66 Moderately populated
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 1.0 Very 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 50 is a moderately populated, very dense object of high C3 quality. Its parallax locates it at a moderate distance, near 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 distance, absorption, age, and mass parameters (see Parameters). It is very well-studied in the literature.

Relatively close Low extinction Near-solar metallicity Intermediate age

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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Ruprecht 50 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–	120.866	-30.874	0.425	-1.77	2.37	48.954
Li et al.	2025	120.872	-30.873	0.414	-1.726	2.352	–
Almeida et al.	2025	120.869	-30.876	–	–	–	–
Hunt & Reffert	2024	120.876	-30.868	0.417	-1.771	2.371	48.949
Cavallo et al.	2024	120.86	-30.868	0.423	–	–	–
Hunt & Reffert	2023	120.876	-30.868	0.417	-1.771	2.371	48.949
Almeida et al.	2023	120.867	-30.877	–	–	–	–
Just et al.	2023	120.872	-30.857	–	–	–	–
Perren et al.	2022	120.872	-30.873	–	–	–	–
Dias et al.	2021	120.869	-30.876	0.413	-1.723	2.363	–
Cantat-Gaudin et al.	2020	120.872	-30.873	0.414	-1.726	2.352	–
Cantat-Gaudin & Anders	2020	120.872	-30.873	0.414	-1.726	2.352	–
Liu & Pang	2019	120.873	-30.881	0.388	-1.913	2.446	–
Bossini et al.	2019	120.872	-30.873	–	–	–	–
Soubiran et al.	2018	120.872	-30.873	–	–	–	51.08
Bica et al.	2019	120.851	-30.859	–	–	–	–
Cantat-Gaudin et al.	2018	120.872	-30.873	0.414	-1.726	2.352	–
Kharchenko et al.	2016	120.872	-30.857	–	–	–	–
Dias et al.	2014	120.862	-30.867	–	-1.65	-0.12	–
Kharchenko et al.	2013	120.877	-30.86	–	0.42	-1.15	–

💡 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–	2.145	0.61	0.73	562	-0.034	222	0.515	–
Li et al.	2025	2.04	0.63	–	562	-0.112	–	–	–
Almeida et al.	2025	2.06	0.76	–	519	–	222	–	–
Hunt & Reffert	2024	–	–	–	–	–	386⁽¹⁾	–	–
Cavallo et al.	2024	2.19	0.89	–	479	-0.150	–	–	–
Hunt & Reffert	2023	2.13	0.42	0.73	456	–	–	–	–
Almeida et al.	2023	1.98	0.33	–	836	0.035	81⁽¹⁾	0.55	–
Just et al.	2023	–	–	–	596	–	69	–	–
Perren et al.	2022	18.28	1.61	–	5012	0.150	170000	0.48	–
Dias et al.	2021	2.06	0.76	–	519	-0.034	–	–	–
Cantat-Gaudin et al.	2020	2.16	0.61	–	457	–	–	–	–
Cantat-Gaudin & Anders	2020	2.26	–	–	–	–	–	–	–
Liu & Pang	2019	–	–	–	576	-0.250	–	–	–
Bossini et al.	2019	2.20	0.57	–	378	0.000	–	–	–
Soubiran et al.	2018	2.26	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	2.26	–	–	–	–	–	–	–
Kharchenko et al.	2016	1.83	0.32	–	596	–	–	–	–
Kharchenko et al.	2013	1.83	0.32	–	596	–	–	–	–

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

Visualization

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