Melotte 125

(Collinder 282; VDBH 159; NGC 5617; MWSC 2223; OCL 919; vdBergh-Hagen 159; ESO 134 04)

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) 492

Stellar density (N₅₀/rad) 50.0 [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 125 is a very rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, near 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 mass parameter (see Parameters). It is very well-studied in the literature.

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

Relatively close Moderate extinction Massive 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 125 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–	217.452	-60.718	0.417	-5.681	-3.177	-35.883
Li et al.	2025	217.452	-60.719	0.4	-5.641	-3.172	–
Wei et al.	2025	217.453	-60.722	0.417	-5.682	-3.16	–
Almeida et al.	2025	217.45	-60.72	–	–	–	–
Hunt & Reffert	2024	217.441	-60.712	0.421	-5.682	-3.177	-37.293
Cavallo et al.	2024	217.451	-60.72	0.422	–	–	–
Hunt & Reffert	2023	217.441	-60.712	0.421	-5.682	-3.177	-37.293
Cordoni et al.	2023	217.45	-60.72	0.401	-5.641	-3.171	–
Just et al.	2023	217.435	-60.712	–	–	–	–
Jaehnig et al.	2021	217.453	-60.714	0.432	-5.645	-3.157	–
Rain et al.	2021	217.452	-60.719	0.4	-5.641	-3.172	–
Dias et al.	2021	217.45	-60.72	0.401	-5.641	-3.171	-35.135
Cantat-Gaudin et al.	2020	217.452	-60.719	0.4	-5.641	-3.172	–
Cantat-Gaudin & Anders	2020	217.452	-60.719	0.4	-5.641	-3.172	–
Bossini et al.	2019	217.452	-60.719	–	–	–	–
Soubiran et al.	2018	217.452	-60.719	–	–	–	-34.74
Bica et al.	2019	217.414	-60.716	–	–	–	–
Cantat-Gaudin et al.	2018	217.452	-60.719	0.4	-5.641	-3.172	–
Loktin & Popova	2017	217.44	-60.713	–	-1.794	-6.146	-35.8
Kharchenko et al.	2016	217.435	-60.712	–	–	–	–
Dias et al.	2014	217.433	-60.712	–	-4.36	-5.39	–
Kharchenko et al.	2013	217.447	-60.715	–	-2.9	-3.0	-35.8
Gozha et al.	2012	217.433	-60.712	–	–	–	–
Piskunov et al.	2008	217.433	-60.712	–	–	–	–
van den Bergh	2006	217.45	-60.717	–	–	–	–
Kharchenko et al.	2005	217.44	-60.71	–	-1.77	-3.65	–
Dias et al.	2002	217.433	-60.712	–	-4.36	-5.39	-38.63
Dambis	1999	217.433	-60.712	–	–	–	–

💡 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–	2.0	1.585	0.93	108	0.064	2184	0.46	0.0
Li et al.	2025	1.95	1.60	–	234	0.055	–	–	–
Wei et al.	2025	5.17	2.32	–	65	0.250	1825	0.33	–
Almeida et al.	2025	1.98	1.74	–	111	–	2853	–	–
Hunt & Reffert	2024	–	–	–	–	–	2542⁽¹⁾	–	–
Cavallo et al.	2024	2.00	1.75	–	200	0.100	–	–	–
Hunt & Reffert	2023	2.18	1.66	0.93	66	–	–	–	–
Cordoni et al.	2023	1.98	1.74	–	111	0.064	7773	0.59	0.00
Just et al.	2023	–	–	–	178	–	299	–	–
Jaehnig et al.	2021	2.30⁽¹⁾	–	–	–	–	–	–	–
Rain et al.	2021	2.33	1.58	–	138	–	–	–	0
Dias et al.	2021	1.98	1.74	–	111	0.064	–	–	–
Cantat-Gaudin et al.	2020	2.24	1.55	–	105	–	–	–	–
Cantat-Gaudin & Anders	2020	2.33	–	–	–	–	–	–	–
Bossini et al.	2019	2.14	1.59	–	138	-0.180	–	–	–
Soubiran et al.	2018	2.33	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	2.33	–	–	–	–	–	–	–
Loktin & Popova	2017	1.54	1.50	–	84	–	–	–	–
Kharchenko et al.	2016	1.77	1.55	–	178	–	–	–	–
Kharchenko et al.	2013	1.77	1.55	–	178	–	–	–	–
Gozha et al.	2012	2.00	–	–	79	0.100	537	–	–
Piskunov et al.	2008	1.53	1.49	–	105	–	–	–	–
van den Bergh	2006	1.53	1.49	–	83	–	–	–	–
Kharchenko et al.	2005	1.53	1.49	–	105	–	–	–	–
Dias et al.	2002	2.00	1.49	–	79	-0.180	–	–	–
Dambis	1999	1.32	1.64	–	32	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
OC 0609	6.5	217.42	-60.72	0.46	-5.71	-3.23	-35.54	0.06

💡 Note: The % column shows the percentage of members that Melotte 125 shares with each listed object.

Visualization

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