Ruprecht 78

(MWSC 1675)

0.83 UTI

0.8

C_N

1.0

C_dens

0.75

C_C3

0.81

C_lit

1.0

C_dup

N_m (P>50%) 228

Core radius and density 1.6 [pc], 6.6 [pc^-2]

C3 classification AB

C_N 0.8 Rich
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.81 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 78 is a rich, very dense object of high C3 quality. Its parallax locates it at a large^* distance, below the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, young cluster, but with a large variance across recent sources for the age and mass parameters (see Parameters). It is well-studied in the literature.

(*): The parallax distance estimate (~8.96 kpc) differs significantly from the median photometric distance (~1.71 kpc).

Relatively close Moderate extinction Massive Near-solar metallicity Young

Cavallo et al. (2024)
Silver sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD classes: 0.04 (50th percentile), true positive? (human-assigned).

Hunt & Reffert (2023)
Classified as open cluster. CMD classes: 0.04 (50th percentile), true positive? (human-assigned).

Data

🔍 Search references for Ruprecht 78 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–	142.284	-53.699	0.112	-3.872	3.287	52.866
Hunt & Reffert	2024	142.28	-53.699	0.118	-3.838	3.333	77.819
Celli et al.	2024	142.282	-53.696	–	–	–	–
Cavallo et al.	2024	142.123	-53.672	0.118	–	–	–
Hunt & Reffert	2023	142.28	-53.699	0.118	-3.838	3.333	77.819
Just et al.	2023	142.256	-53.707	–	–	–	–
Cantat-Gaudin et al.	2020	142.282	-53.696	0.097	-3.892	3.252	–
Cantat-Gaudin & Anders	2020	142.282	-53.696	0.097	-3.892	3.252	–
Soubiran et al.	2018	142.282	-53.696	–	–	–	51.32
Cantat-Gaudin et al.	2018	142.282	-53.696	0.097	-3.892	3.252	–
Dias et al.	2018	–	–	–	-4.9	1.46	–
Dib et al.	2018	142.26	-53.71	–	–	–	–
Loktin & Popova	2017	142.29	-53.699	–	-9.771	-1.719	–
Sampedro et al.	2017	142.292	-53.7	–	-1.13	-1.65	–
Joshi et al.	2016	142.26	-53.71	–	–	–	–
Kharchenko et al.	2016	142.256	-53.707	–	–	–	–
Dias et al.	2014	142.292	-53.7	–	-2.47	-0.79	–
Kharchenko et al.	2013	142.26	-53.71	–	-10.0	5.4	–
Bukowiecki et al.	2011	142.279	-53.699	–	–	–	–
Piskunov et al.	2008	142.286	-53.695	–	–	–	–
van den Bergh	2006	142.3	-53.7	–	–	–	–
Kharchenko et al.	2005	142.29	-53.7	–	-9.23	5.51	–
Kharchenko et al.	2003	142.3	-53.58	–	-9.07	3.57	–
Dias et al.	2002	142.292	-53.7	–	-2.14	-1.32	–
Lynga	1987	142.309	-53.666	–	–	–	–
van den Bergh & Hagen	1975	141.9	-53.45	–	–	–	–

💡 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–	1.71	1.25	2.83	20	0.450	1096	–	–
Hunt & Reffert	2024	7.97	3.39	2.83	21	–	1760⁽¹⁾	–	–
Celli et al.	2024	–	–	–	18	–	1250	–	–
Cavallo et al.	2024	6.19	3.08	–	110	0.450	–	–	–
Hunt & Reffert	2023	7.97	3.39	2.83	21	–	–	–	–
Just et al.	2023	–	–	–	18	–	44	–	–
Kounkel et al.	2020	5.79	2.85	–	78	–	–	–	–
Cantat-Gaudin & Anders	2020	7.96	–	–	–	–	–	–	–
Soubiran et al.	2018	7.96	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	7.96	–	–	–	–	–	–	–
Dib et al.	2018	1.71	–	–	18	–	–	–	–
Loktin & Popova	2017	1.73	1.12	–	113	–	–	–	–
Joshi et al.	2016	1.71	1.38	–	18	–	1096	–	–
Kharchenko et al.	2016	1.71	1.38	–	18	–	–	–	–
Kharchenko et al.	2013	1.71	1.38	–	18	–	–	–	–
Bukowiecki et al.	2012	–	–	–	–	–	318	–	–
Bukowiecki et al.	2011	1.71⁽¹⁾	0.82	–	50	–	–	–	–
Piskunov et al.	2008	1.64	1.10	–	14	–	–	–	–
van den Bergh	2006	1.64	1.10	–	98	–	–	–	–
Kharchenko et al.	2005	1.64	1.10	–	14	–	–	–	–
Kharchenko et al.	2003	1.64	1.10	–	–	–	–	–	–
Dias et al.	2002	1.64	1.10	–	97	–	–	–	–
Lynga	1987	3.50	–	–	–	–	–	–	–

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

Visualization

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