Melotte 137

(Collinder 293; VDBH 178; NGC 5999; MWSC 2326; OCL 946; vdBergh-Hagen 178; ESO 178 01; FSR 1706)

0.98 UTI

0.9

C_N

1.0

C_dens

1.0

C_C3

1.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 495

Stellar density (N₅₀/rad) 72.6 [N/pc²]

C3 classification AA

C_N 0.9 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 137 is a very rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age and mass parameters (see Parameters). It is very well-studied in the literature.

Relatively close Moderate extinction Massive 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 Melotte 137 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–	238.045	-56.483	0.345	-3.411	-4.22	-31.119
Li et al.	2025	238.046	-56.482	0.326	-3.389	-4.216	–
Almeida et al.	2025	238.047	-56.482	–	–	–	–
Hunt & Reffert	2024	238.044	-56.479	0.349	-3.421	-4.211	-33.152
Cavallo et al.	2024	238.049	-56.486	0.348	–	–	–
Hunt & Reffert	2023	238.044	-56.479	0.349	-3.421	-4.211	-33.152
Almeida et al.	2023	238.048	-56.484	–	–	–	–
Just et al.	2023	238.031	-56.466	–	–	–	–
Jaehnig et al.	2021	238.054	-56.481	0.36	-3.372	-4.226	–
Rain et al.	2021	238.046	-56.482	0.326	-3.389	-4.216	–
Dias et al.	2021	238.047	-56.482	0.329	-3.389	-4.21	-30.883
Cantat-Gaudin et al.	2020	238.046	-56.482	0.326	-3.389	-4.216	–
Cantat-Gaudin & Anders	2020	238.046	-56.482	0.326	-3.389	-4.216	–
Soubiran et al.	2018	238.046	-56.482	–	–	–	-30.78
Bica et al.	2019	238.03	-56.468	–	–	–	–
Ferreira et al.	2019	238.047	-56.488	–	-3.374	-4.216	–
Cantat-Gaudin et al.	2018	238.046	-56.482	0.326	-3.389	-4.216	–
Kharchenko et al.	2016	238.031	-56.466	–	–	–	–
Dias et al.	2014	238.033	-56.473	–	-0.72	-2.79	–
Kharchenko et al.	2013	238.042	-56.467	–	0.8	0.25	–
van den Bergh	2006	238.05	-56.467	–	–	–	–
Dias et al.	2002	238.033	-56.473	–	-0.72	-2.74	–

💡 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–	2.29	1.59	1.39	357	0.070	1144	0.6	0.0
Li et al.	2025	2.24	1.59	–	468	0.061	–	–	–
Almeida et al.	2025	2.19	1.87	–	196	–	1086	–	–
Hunt & Reffert	2024	–	–	–	–	–	4448⁽¹⁾	–	–
Cavallo et al.	2024	2.42	2.12	–	219	0.140	–	–	–
Hunt & Reffert	2023	2.56	1.78	1.39	137	–	–	–	–
Almeida et al.	2023	2.29	1.94	–	163	0.135	1203⁽¹⁾	0.60	–
Just et al.	2023	–	–	–	398	–	102	–	–
Jaehnig et al.	2021	2.80⁽¹⁾	–	–	–	–	–	–	–
Rain et al.	2021	2.81	1.40	–	398	–	–	–	0
Dias et al.	2021	2.19	1.87	–	196	0.079	–	–	–
Cantat-Gaudin et al.	2020	2.75	1.40	–	200	–	–	–	–
Cantat-Gaudin & Anders	2020	2.81	–	–	–	–	–	–	–
Soubiran et al.	2018	2.81	–	–	–	–	–	–	–
Ferreira et al.	2019	1.82	1.98	–	316	-0.200	–	–	–
Cantat-Gaudin et al.	2018	2.81	–	–	–	–	–	–	–
Kharchenko et al.	2016	1.63	1.35	–	398	–	–	–	–
Kharchenko et al.	2013	1.63	1.35	–	398	–	–	–	–
van den Bergh	2006	2.05	1.40	–	398	–	–	–	–
Dias et al.	2002	2.05	1.40	–	398	0.000	–	–	–

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

Visualization

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