Ruprecht 36

(MWSC 1344)

0.81 UTI

0.76

C_N

1.0

C_dens

0.75

C_C3

0.77

C_lit

1.0

C_dup

N_m (P>50%) 126

Core radius and density 1.2 [pc], 6.9 [pc^-2]

C3 classification AB

C_N 0.76 Rich
C_dens 1.0 Very dense
C_C3 0.75 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 36 is a rich, 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 age and metallicity parameters (see Parameters). It is 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.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.2682, e_all=0.4529.

Ahumada & Lapasset (2007)
Star 1=CD-26 5011 appears as a straggler in (1972A&AS....7..133V), but it is a non-member according to that reference.

Data

🔍 Search references for Ruprecht 36 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–	117.093	-26.291	0.363	-2.694	0.93	–
Li et al.	2025	117.096	-26.287	0.34	-2.768	0.903	–
Almeida et al.	2025	117.095	-26.281	–	–	–	–
Hunt & Reffert	2024	117.09	-26.29	0.354	-2.691	0.931	68.601
Cavallo et al.	2024	117.096	-26.278	0.361	–	–	–
Hunt & Reffert	2023	117.09	-26.29	0.354	-2.691	0.931	68.601
Just et al.	2023	117.092	-26.287	–	–	–	–
Jaehnig et al.	2021	117.099	-26.29	0.372	-2.725	0.902	–
Rain et al.	2021	117.096	-26.287	0.34	-2.768	0.903	–
Dias et al.	2021	117.095	-26.281	0.348	-2.779	0.9	–
Cantat-Gaudin et al.	2020	117.096	-26.287	0.34	-2.768	0.903	–
Cantat-Gaudin & Anders	2020	117.096	-26.287	0.34	-2.768	0.903	–
Soubiran et al.	2018	117.096	-26.287	–	–	–	41.9
Cantat-Gaudin et al.	2018	117.096	-26.287	0.34	-2.768	0.903	–
Dib et al.	2018	117.097	-26.29	–	–	–	–
Loktin & Popova	2017	117.09	-26.299	–	-4.843	1.422	–
Sampedro et al.	2017	117.096	-26.3	–	-4.03	1.26	–
Kharchenko et al.	2016	117.092	-26.287	–	–	–	–
Dias et al.	2014	117.096	-26.3	–	-3.67	2.29	–
Kharchenko et al.	2013	117.097	-26.29	–	-5.15	3.04	–
Bukowiecki et al.	2011	117.1	-26.278	–	–	–	–
Ahumada & Lapasset	2007	117.1	-26.3	–	–	–	–
van den Bergh	2006	117.092	-26.303	–	–	–	–
Dias et al.	2002	117.096	-26.3	–	-3.67	2.29	–
Lynga	1987	117.123	-26.294	–	–	–	–

💡 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–	2.46	0.53	0.98	174	-0.130	262	–	0
Li et al.	2025	2.47	0.51	–	364	-0.032	–	–	–
Almeida et al.	2025	2.48	0.86	–	104	–	370	–	–
Hunt & Reffert	2024	2.45	0.32	0.98	192	–	294⁽¹⁾	–	–
Cavallo et al.	2024	2.18	0.74	–	275	-0.370	–	–	–
Hunt & Reffert	2023	2.45	0.32	0.98	192	–	–	–	–
Just et al.	2023	–	–	–	191	–	64	–	–
Jaehnig et al.	2021	2.77⁽¹⁾	–	–	–	–	–	–	–
Rain et al.	2021	2.71	0.50	–	40	–	–	–	0
Dias et al.	2021	2.48	0.86	–	104	-0.130	–	–	–
Cantat-Gaudin et al.	2020	2.70	0.63	–	56	–	–	–	–
Kounkel et al.	2020	2.83	0.78	–	174	–	–	–	–
Cantat-Gaudin & Anders	2020	2.71	–	–	–	–	–	–	–
Soubiran et al.	2018	2.71	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	2.71	–	–	–	–	–	–	–
Dib et al.	2018	1.82	–	–	191	–	–	–	–
Loktin & Popova	2017	1.71	0.52	–	44	–	–	–	–
Kharchenko et al.	2016	1.82	0.47	–	191	–	–	–	–
Kharchenko et al.	2013	1.82	0.47	–	191	–	–	–	–
Bukowiecki et al.	2012	–	–	–	–	–	231	–	–
Bukowiecki et al.	2011	2.06⁽¹⁾	0.66	–	45	–	–	–	–
Ahumada & Lapasset	2007	–	0.54	–	41	–	–	–	0
van den Bergh	2006	1.68	0.54	–	41	–	–	–	–
Dias et al.	2002	1.68	0.52	–	40	–	–	–	–
Lynga	1987	–	–	–	200	–	–	–	–

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

Visualization

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