Ruprecht 48

(OCL 702; ESO 430 11; FSR 1349; MWSC 1421)

0.82 UTI

0.79

C_N

1.0

C_dens

0.75

C_C3

0.78

C_lit

1.0

C_dup

N₅₀ (P>50% members) 197

Stellar density (N₅₀/rad) 24.1 [N/pc²]

C3 classification AB

C_N 0.79 Rich
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.78 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 48 is a rich, very dense object of high C3 quality. Its parallax locates it at a moderate distance, near 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 age parameter (see Parameters). It is well-studied in the literature.

Note: This object shares a small percentage of members with 2 later reported entries. See table with shared members information.

Distant Moderate extinction Near-solar metallicity Intermediate age

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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Ruprecht 48 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–	120.681	-32.048	0.255	-2.489	2.852	127.131
Li et al.	2025	120.681	-32.045	0.235	-2.517	2.827	–
Almeida et al.	2025	120.681	-32.046	–	–	–	–
Hunt & Reffert	2024	120.674	-32.043	0.251	-2.479	2.854	127.141
Cavallo et al.	2024	120.772	-32.044	0.253	–	–	–
Hunt & Reffert	2023	120.674	-32.043	0.251	-2.479	2.854	127.141
Almeida et al.	2023	120.68	-32.05	–	–	–	–
Dias et al.	2021	120.681	-32.046	0.242	-2.533	2.814	–
Cantat-Gaudin et al.	2020	120.681	-32.045	0.235	-2.517	2.827	–
Cantat-Gaudin & Anders	2020	120.681	-32.045	0.235	-2.517	2.827	–
Bica et al.	2019	120.68	-32.037	–	–	–	–
Cantat-Gaudin et al.	2018	120.681	-32.045	0.235	-2.517	2.827	–
Dias et al.	2014	120.679	-32.051	–	-2.34	0.74	–
Glushkova et al.	2010	120.677	-32.051	–	–	–	–
Dias et al.	2002	120.679	-32.051	–	-2.34	0.74	–

💡 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–	3.31	1.34	1.99	109	-0.107	558	0.6	–
Li et al.	2025	3.36	1.34	–	294	-0.175	–	–	–
Almeida et al.	2025	3.31	1.51	–	37	–	558	–	–
Hunt & Reffert	2024	–	–	–	–	–	1500⁽¹⁾	–	–
Cavallo et al.	2024	3.16	1.41	–	81	-0.100	–	–	–
Hunt & Reffert	2023	3.40	1.23	1.99	109	–	–	–	–
Almeida et al.	2023	3.22	1.49	–	93	-0.115	515⁽¹⁾	0.60	–
Dias et al.	2021	3.31	1.51	–	37	-0.093	–	–	–
Cantat-Gaudin et al.	2020	3.94	0.92	–	112	–	–	–	–
Cantat-Gaudin & Anders	2020	3.78	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	3.78	–	–	–	–	–	–	–
Glushkova et al.	2010	3.03	0.90	–	398	–	–	–	–
Dias et al.	2002	3.03	0.90	–	398	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
OC 0438	19.8	120.69	-32.05	0.26	-2.48	2.88	–	0.0
OC 0439	7.1	120.79	-32.09	0.29	-2.52	2.9	127.13	0.05

💡 Note: The % column shows the percentage of members that Ruprecht 48 shares with each listed object.

Visualization

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