Melotte 108

(Collinder 250; VDBH 123; NGC 3960; MWSC 1982; OCL 861; vdBergh-Hagen 123; ESO 170 14; FSR 1590; FoF 594)

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) 543

Stellar density (N₅₀/rad) 57.8 [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 108 is a very rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by low extinction. It is catalogued as a massive, near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity and mass parameters (see Parameters). It is very well-studied in the literature.

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

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

Relatively close Low extinction Massive Near-solar metallicity Intermediate age Contains BSS

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 108 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–	177.647	-55.676	0.417	-6.516	1.879	-22.324
Li et al.	2025	177.644	-55.679	0.4	-6.522	1.853	–
Hu & Soubiran	2025	177.643	-55.676	–	–	–	–
Almeida et al.	2025	177.641	-55.679	–	–	–	–
Hunt & Reffert	2024	177.65	-55.677	0.419	-6.52	1.88	-22.543
Cavallo et al.	2024	177.643	-55.676	0.419	–	–	–
Hunt & Reffert	2023	177.65	-55.677	0.419	-6.52	1.88	-22.543
Almeida et al.	2023	177.638	-55.678	–	–	–	–
Just et al.	2023	177.651	-55.666	–	–	–	–
Jaehnig et al.	2021	177.656	-55.676	0.435	-6.505	1.846	–
Rain et al.	2021	177.644	-55.679	0.4	-6.522	1.853	–
Dias et al.	2021	177.641	-55.679	0.404	-6.52	1.857	-21.993
Cantat-Gaudin et al.	2020	177.644	-55.679	0.4	-6.522	1.853	–
Cantat-Gaudin & Anders	2020	177.644	-55.679	0.4	-6.522	1.853	–
Liu & Pang	2019	177.643	-55.676	0.406	-6.51	1.84	–
Soubiran et al.	2018	177.644	-55.679	–	–	–	-22.54
Bica et al.	2019	177.624	-55.674	–	–	–	–
Cantat-Gaudin et al.	2018	177.644	-55.679	0.4	-6.522	1.853	–
Loktin & Popova	2017	177.63	-55.673	–	-4.75	3.97	-22.6
Kharchenko et al.	2016	177.651	-55.666	–	–	–	–
Dias et al.	2014	177.637	-55.673	–	-4.75	3.97	–
Kharchenko et al.	2013	177.66	-55.67	–	-9.88	-1.61	-22.6
Gozha et al.	2012	177.637	-55.673	–	–	–	–
Kharchenko et al.	2007	177.63	-55.67	–	0.04	–	–
van den Bergh	2006	177.725	-55.7	–	–	–	–
Chen et al.	2003	177.624	-55.674	–	–	–	–
Dias et al.	2002	177.637	-55.673	–	-4.75	3.97	-22.26

💡 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–	2.26	0.935	0.64	944	0.020	1104	0.56	2.0
Li et al.	2025	2.49	0.97	–	856	0.154	–	–	–
Hu & Soubiran	2025	–	–	–	–	-0.200⁽⁵⁾	–	–	–
Almeida et al.	2025	2.07	1.07	–	955	–	1057	–	–
Hunt & Reffert	2024	–	–	–	–	–	3006⁽¹⁾	–	–
Cavallo et al.	2024	2.29	1.14	–	776	0.180	–	–	–
Hunt & Reffert	2023	2.20	0.84	0.64	809	–	–	–	–
Almeida et al.	2023	2.10	1.10	–	944	0.021	1152⁽¹⁾	0.56	–
Just et al.	2023	–	–	–	1288	–	376	–	–
Jaehnig et al.	2021	2.29⁽¹⁾	–	–	–	–	–	–	–
Rain et al.	2021	2.33	0.90	–	1259	–	–	–	2
Dias et al.	2021	2.07	1.07	–	955	0.003	–	–	–
Cantat-Gaudin et al.	2020	2.34	0.84	–	871	–	–	–	–
Cantat-Gaudin & Anders	2020	2.33	–	–	–	–	–	–	–
Liu & Pang	2019	–	–	–	851	0.250	–	–	–
Soubiran et al.	2018	2.33	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	2.33	–	–	–	–	–	–	–
Loktin & Popova	2017	2.26	0.94	–	664	–	–	–	–
Kharchenko et al.	2016	1.88	0.52	–	1288	–	–	–	–
Kharchenko et al.	2013	1.88	0.52	–	1288	0.020	–	–	–
Gozha et al.	2012	1.85	–	–	1259	0.020	–	–	–
van den Bergh	2006	2.26	0.93	–	661	–	–	–	–
Chen et al.	2003	2.26	0.94	–	660	-0.170⁽¹⁾	–	–	–
Dias et al.	2002	1.85	0.90	–	1259	0.020	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
UBC 1624	4.6	177.61	-55.68	0.45	-6.48	1.89	0.52	0.0

💡 Note: The % column shows the percentage of members that Melotte 108 shares with each listed object.

Visualization

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