Melotte 70

(Collinder 153; NGC 2423; MWSC 1283; OCL 592; FoF 2232)

1.0 UTI

1.0

C_N

1.0

C_dens

1.0

C_C3

1.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 613

Stellar density (N₅₀/rad) 26.7 [N/pc²]

C3 classification AA

C_N 1.0 Very rich
C_dens 1.0 Very dense
C_C3 1.0 Very 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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Melotte 70 is a very rich, very dense object of very high C3 quality. Its parallax locates it at a close distance, above 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 absorption, metallicity, and mass parameters (see Parameters). It is very well-studied in the literature.

Close Low extinction Near-solar metallicity Intermediate age

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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Melotte 70 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–	114.298	-13.863	1.056	-0.752	-3.584	18.651
Nizovkina et al.	2025	114.317	-13.863	–	–	–	–
Li et al.	2025	114.299	-13.863	1.045	-0.735	-3.632	–
Hu & Soubiran	2025	114.286	-13.854	–	–	–	–
Wei et al.	2025	114.293	-13.866	1.059	-0.742	-3.582	–
Almeida et al.	2025	114.293	-13.834	–	–	–	–
Alfonso et al.	2024	114.297	-13.867	1.02	-0.753	-3.581	–
Hunt & Reffert	2024	114.317	-13.863	1.059	-0.747	-3.582	18.842
Cavallo et al.	2024	114.286	-13.854	1.06	–	–	–
Hunt & Reffert	2023	114.317	-13.863	1.059	-0.747	-3.582	18.842
Almeida et al.	2023	114.267	-13.84	–	–	–	–
Cordoni et al.	2023	114.293	-13.834	1.043	-0.729	-3.642	–
Just et al.	2023	114.271	-13.848	–	–	–	–
He et al.	2022	114.311	-13.87	1.06	-0.737	-3.581	–
Tarricq et al.	2022	114.294	-13.868	1.051	-0.753	-3.576	–
Dias et al.	2021	114.293	-13.834	1.043	-0.729	-3.642	19.996
Cantat-Gaudin et al.	2020	114.299	-13.863	1.045	-0.735	-3.632	–
Cantat-Gaudin & Anders	2020	114.299	-13.863	1.045	-0.735	-3.632	–
Liu & Pang	2019	114.314	-13.858	1.041	-0.733	-3.629	–
Bossini et al.	2019	114.299	-13.863	–	–	–	–
Soubiran et al.	2018	114.299	-13.863	–	–	–	19.9
Bica et al.	2019	114.286	-13.885	–	–	–	–
Cantat-Gaudin et al.	2018	114.299	-13.863	1.045	-0.735	-3.632	–
Loktin & Popova	2017	114.27	-13.871	–	-1.4	-3.021	21.7
Kharchenko et al.	2016	114.271	-13.848	–	–	–	–
Dias et al.	2014	114.275	-13.872	–	-1.34	-0.91	–
Kharchenko et al.	2013	114.277	-13.85	–	-0.6	-2.89	21.7
Gozha et al.	2012	114.275	-13.872	–	–	–	–
Piskunov et al.	2008	114.267	-13.872	–	–	–	–
Kharchenko et al.	2007	114.27	-13.87	–	0.46	–	21.67
Piskunov et al.	2007	114.267	-13.872	–	–	–	–
van den Bergh	2006	114.275	-13.867	–	–	–	–
Kharchenko et al.	2005	114.27	-13.87	–	-0.3	-2.28	21.67
Kharchenko et al.	2003	114.3	-13.87	–	1.0	-2.24	–
Chen et al.	2003	114.263	-13.885	–	2.59	-4.79	18.1
Dias et al.	2002	114.275	-13.872	–	-1.34	-0.91	18.47

💡 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–	0.89	0.31	0.22	990	0.122	794	0.44	0.0
Nizovkina et al.	2025	0.86⁽⁴⁾	0.32⁽⁴⁾	–	1189⁽⁴⁾	-0.115⁽⁴⁾	–	–	–
Li et al.	2025	0.89	0.33	–	1227	-0.049	–	–	–
Hu & Soubiran	2025	–	–	–	–	-0.160⁽⁵⁾	–	–	–
Wei et al.	2025	0.89	0.06	–	933	0.500	1009	0.44	–
Almeida et al.	2025	0.92	0.30	–	1089	–	963	–	–
Alfonso et al.	2024	0.94	0.36	–	889	0.120	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	1401⁽¹⁾	–	–
Cavallo et al.	2024	0.93	0.45	–	1000	0.160	–	–	–
Hunt & Reffert	2023	0.88	0.12	0.22	1183	–	–	–	–
Almeida et al.	2023	0.90	0.35	–	1117	-0.024	999⁽¹⁾	0.49	–
Cordoni et al.	2023	0.92	0.30	–	1089	0.122	739	0.42	0.00
Just et al.	2023	–	–	–	1059	–	135	–	–
He et al.	2022	–	0.55	–	891	–	–	–	–
Tarricq et al.	2022	0.92	–	–	1122	–	–	–	–
Dias et al.	2021	0.92	0.30	–	1089	0.122	–	–	–
Cantat-Gaudin et al.	2020	0.94	0.36	–	1096	–	–	–	–
Cantat-Gaudin & Anders	2020	0.93	–	–	–	–	–	–	–
Liu & Pang	2019	–	–	–	912	0.500	–	–	–
Bossini et al.	2019	0.93	0.29	–	979	0.080	–	–	–
Soubiran et al.	2018	0.93	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	0.93	–	–	–	–	–	–	–
Loktin & Popova	2017	0.79	0.31	–	733	–	–	–	–
Kharchenko et al.	2016	0.82	0.19	–	1059	–	–	–	–
Kharchenko et al.	2013	0.82	0.19	–	1059	0.068	–	–	–
Gozha et al.	2012	0.77	–	–	736	0.140	479	–	–
Piskunov et al.	2008	0.77	0.31	–	955	–	794⁽¹⁾	–	–
Piskunov et al.	2007	0.77	0.31	–	955	–	287	–	–
van den Bergh	2006	0.77	0.31	–	741	–	–	–	–
Kharchenko et al.	2005	0.77	0.31	–	955	–	–	–	–
Kharchenko et al.	2003	0.76	0.31	–	–	–	–	–	–
Chen et al.	2003	0.77	0.30	–	730	0.140⁽¹⁾	–	–	–
Dias et al.	2002	0.77	0.30	–	736	0.140	–	–	–

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

Visualization

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