Melotte 105

(Collinder 246; VDBH 117; MWSC 1933; OCL 856; vdBergh-Hagen 117; ESO 093 07; FSR 1587; FoF 133)

1.0 UTI

1.0

C_N

1.0

C_dens

1.0

C_C3

1.0

C_lit

1.0

C_dup

C3 classification AA

Number of members (P>50%) 788

Radius (P>50% members) 2.8 [arcmin]

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 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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Melotte 105 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 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 Moderate extinction Massive Near-solar metallicity Intermediate age 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 105 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	–	169.922	-63.485	0.419	-6.774	2.167	1.248
Li et al.	2025	169.92	-63.486	0.407	-6.771	2.133	–
Almeida et al.	2025	169.915	-63.488	–	–	–	–
Hunt & Reffert	2024	169.917	-63.484	0.424	-6.771	2.175	8.173
Cavallo et al.	2024	169.916	-63.488	0.424	–	–	–
Hunt & Reffert	2023	169.917	-63.484	0.424	-6.771	2.175	8.173
Just et al.	2023	169.911	-63.471	–	–	–	–
Jaehnig et al.	2021	169.92	-63.487	0.436	-6.764	2.144	–
Rain et al.	2021	169.92	-63.486	0.407	-6.771	2.133	–
Dias et al.	2021	169.915	-63.488	0.415	-6.766	2.152	16.916
Cantat-Gaudin et al.	2020	169.92	-63.486	0.407	-6.771	2.133	–
Sánchez et al.	2020	169.925	-63.483	–	-6.689	2.218	–
Cantat-Gaudin & Anders	2020	169.92	-63.486	0.407	-6.771	2.133	–
Liu & Pang	2019	169.918	-63.486	0.419	-6.766	2.136	–
Soubiran et al.	2018	169.92	-63.486	–	–	–	1.49
Bica et al.	2019	169.918	-63.48	–	–	–	–
Cantat-Gaudin et al.	2018	169.92	-63.486	0.407	-6.771	2.133	–
Loktin & Popova	2017	169.92	-63.482	–	-6.3	0.11	0.4
Kharchenko et al.	2016	169.911	-63.471	–	–	–	–
Dias et al.	2014	169.925	-63.483	–	-6.3	0.11	–
Kharchenko et al.	2013	169.92	-63.475	–	-5.93	1.69	0.4
Gozha et al.	2012	169.925	-63.483	–	–	–	–
van den Bergh	2006	169.875	-63.5	–	–	–	–
Dias et al.	2002	169.925	-63.483	–	-6.3	0.11	0.4

💡 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]	Bfr	BSS
Li et al.	2025	1.89	1.32	–	594	-0.241	–	–	–
Almeida et al.	2025	1.97	1.51	–	377	–	2382	–	–
Hunt & Reffert	2024	–	–	–	–	–	3595*	–	–
Cavallo et al.	2024	2.31	1.34	–	490	0.360	–	–	–
Hunt & Reffert	2023	2.20	1.23	1.01	289	–	–	–	–
Just et al.	2023	–	–	–	237	–	242	–	–
Jaehnig et al.	2021	2.27*	–	–	–	–	–	–	–
Rain et al.	2021	2.29	2.57	–	355	–	–	–	1
Dias et al.	2021	1.97	1.51	–	377	-0.100	–	–	–
Cantat-Gaudin et al.	2020	2.34	1.42	–	302	–	–	–	–
Cantat-Gaudin & Anders	2020	2.29	–	–	–	–	–	–	–
Liu & Pang	2019	–	–	–	275	0.250	–	–	–
Soubiran et al.	2018	2.29	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	2.29	–	–	–	–	–	–	–
Loktin & Popova	2017	2.20	1.56	–	195	–	–	–	–
Kharchenko et al.	2016	2.20	1.55	–	237	–	–	–	–
Kharchenko et al.	2013	2.20	1.55	–	237	–	–	–	–
Gozha et al.	2012	2.21	–	–	207	0.000	–	–	–
van den Bergh	2006	2.21	1.49	–	209	–	–	–	–
Dias et al.	2002	1.72	2.57	–	355	0.080	–	–	–

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
OC 0564	5.7	169.91	-63.48	0.47	-6.73	2.17	–	0.0

💡 Note: The % column shows the percentage of members that Melotte 105 shares with each listed object.

Visualization

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