Melotte 50

(Collinder 113; NGC 2266; MWSC 967; OCL 471; FSR 0879; FoF 631)

0.97 UTI

0.86

C_N

1.0

C_dens

1.0

C_C3

1.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 398

Stellar density (N₅₀/rad) 21.5 [N/pc²]

C3 classification AA

C_N 0.86 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 50 is a rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, well above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, old cluster, but with a large variance across recent sources for the mass parameter (see Parameters). It is very well-studied in the literature.

Note: This object contains blue stragglers according to at least one source.

Distant Low extinction Near-solar metallicity Old Contains BSS

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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Melotte 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–	100.831	26.977	0.257	-0.484	-1.247	52.955
Li et al.	2025	100.832	26.976	0.273	-0.473	-1.272	–
Hu & Soubiran	2025	100.835	26.978	–	–	–	–
Almeida et al.	2025	100.83	26.977	–	–	–	–
Zhang et al.	2024	100.831	26.978	–	–	–	–
Hunt & Reffert	2024	100.831	26.978	0.251	-0.487	-1.244	52.997
Cavallo et al.	2024	100.835	26.978	0.251	–	–	–
Hunt & Reffert	2023	100.831	26.978	0.251	-0.487	-1.244	52.997
Almeida et al.	2023	100.829	26.973	–	–	–	–
Just et al.	2023	100.825	26.987	–	–	–	–
Jaehnig et al.	2021	100.833	26.976	0.298	-0.462	-1.264	–
Rain et al.	2021	100.832	26.976	0.273	-0.473	-1.272	–
Dias et al.	2021	100.83	26.977	0.265	-0.483	-1.276	–
Cantat-Gaudin et al.	2020	100.832	26.976	0.273	-0.473	-1.272	–
Sánchez et al.	2020	100.829	26.97	–	-0.432	-1.224	–
Cantat-Gaudin & Anders	2020	100.832	26.976	0.273	-0.473	-1.272	–
Liu & Pang	2019	100.835	26.972	0.29	-0.423	-1.269	–
Soubiran et al.	2018	100.832	26.976	–	–	–	37.89
Bica et al.	2019	100.821	26.977	–	–	–	–
Cantat-Gaudin et al.	2018	100.832	26.976	0.273	-0.473	-1.272	–
Loktin & Popova	2017	100.83	26.97	–	-0.799	-0.956	-16.0
Kharchenko et al.	2016	100.825	26.987	–	–	–	–
Dias et al.	2014	100.829	26.97	–	0.96	-5.01	–
Kharchenko et al.	2013	100.834	26.985	–	-2.44	-4.17	–
Gozha et al.	2012	100.829	26.97	–	–	–	–
van den Bergh	2006	100.8	26.967	–	–	–	–
Dias et al.	2002	100.829	26.97	–	0.93	-5.03	-16.0

💡 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	0.36	0.38	1000	-0.240	988	0.66	1.0
Li et al.	2025	3.27	0.37	–	1045	-0.161	–	–	–
Hu & Soubiran	2025	–	–	–	–	-0.280⁽⁵⁾	–	–	–
Almeida et al.	2025	3.32	0.36	–	1086	–	1136	–	–
Zhang et al.	2024	–	–	–	–	-0.248⁽¹⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	2399⁽¹⁾	–	–
Cavallo et al.	2024	2.87	0.34	–	1175	-0.160	–	–	–
Hunt & Reffert	2023	4.13	0.12	0.38	798	–	–	–	–
Almeida et al.	2023	3.11	0.44	–	1050	-0.232	840⁽¹⁾	0.66	–
Just et al.	2023	–	–	–	1841	–	579	–	–
Jaehnig et al.	2021	3.38⁽¹⁾	–	–	–	–	–	–	–
Rain et al.	2021	3.31	0.62	–	631	–	–	–	1
Dias et al.	2021	3.32	0.36	–	1086	-0.163	–	–	–
Cantat-Gaudin et al.	2020	3.25	0.26	–	813	–	–	–	–
Cantat-Gaudin & Anders	2020	3.31	–	–	–	–	–	–	–
Liu & Pang	2019	–	–	–	955	0.000	–	–	–
Soubiran et al.	2018	3.31	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	3.31	–	–	–	–	–	–	–
Loktin & Popova	2017	3.96	0.41	–	507	–	–	–	–
Kharchenko et al.	2016	3.31	0.00	–	1841	–	–	–	–
Kharchenko et al.	2013	3.31	0.00	–	1841	-0.390	–	–	–
Gozha et al.	2012	3.40	–	–	631	-0.330	–	–	–
van den Bergh	2006	3.40	0.31	–	631	–	–	–	–
Dias et al.	2002	3.00	0.62	–	631	-0.380	–	–	–

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

Visualization

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