Melotte 48

(Collinder 108; NGC 2259; MWSC 940; OCL 492; FoF 370)

0.90 UTI

0.77

C_N

1.0

C_dens

0.75

C_C3

1.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 161

Stellar density (N₅₀/rad) 56.7 [N/pc²]

C3 classification AB

C_N 0.77 Rich
C_dens 1.0 Very dense
C_C3 0.75 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 48 is a rich, very dense object of high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity parameter (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 small percentage of members with 2 later reported entries. See table with shared members information.

Relatively close Moderate extinction Near-solar metallicity Intermediate age Contains BSS

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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Melotte 48 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–	99.637	10.884	0.328	-0.231	-1.097	64.761
Li et al.	2025	99.633	10.885	0.326	-0.273	-1.032	–
Hu & Soubiran	2025	99.633	10.884	–	–	–	–
Almeida et al.	2025	99.621	10.886	–	–	–	–
Zhang et al.	2024	99.639	10.881	–	–	–	–
Hunt & Reffert	2024	99.639	10.881	0.31	-0.237	-1.086	80.409
Cavallo et al.	2024	99.633	10.884	0.309	–	–	–
Hunt & Reffert	2023	99.639	10.881	0.31	-0.237	-1.086	80.409
Almeida et al.	2023	99.623	10.881	–	–	–	–
Just et al.	2023	99.625	10.876	–	–	–	–
Jaehnig et al.	2021	99.638	10.876	0.376	-0.245	-1.128	–
Rain et al.	2021	99.633	10.885	0.326	-0.273	-1.032	–
Dias et al.	2021	99.621	10.886	0.308	-0.266	-1.062	–
Cantat-Gaudin et al.	2020	99.633	10.885	0.326	-0.273	-1.032	–
Cantat-Gaudin & Anders	2020	99.633	10.885	0.326	-0.273	-1.032	–
Liu & Pang	2019	99.632	10.889	0.328	-0.257	-1.045	–
Soubiran et al.	2018	99.633	10.885	–	–	–	65.86
Bica et al.	2019	99.637	10.888	–	–	–	–
Cantat-Gaudin et al.	2018	99.633	10.885	0.326	-0.273	-1.032	–
Loktin & Popova	2017	99.63	10.884	–	0.877	-0.715	–
Kharchenko et al.	2016	99.625	10.876	–	–	–	–
Dias et al.	2014	99.587	10.883	–	2.79	-0.96	–
Kharchenko et al.	2013	99.633	10.875	–	2.66	-2.38	–
Gozha et al.	2012	99.588	10.883	–	–	–	–
van den Bergh	2006	99.643	10.89	–	–	–	–
Chen et al.	2003	99.582	10.883	–	–	–	–
Dias et al.	2002	99.588	10.883	–	2.79	-0.96	–

💡 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–	2.82	1.83	1.18	337	0.070	880	0.55	4.0
Li et al.	2025	2.63	1.64	–	742	-0.152	–	–	–
Hu & Soubiran	2025	–	–	–	–	-0.240⁽⁵⁾	–	–	–
Almeida et al.	2025	2.34	1.85	–	337	–	645	–	–
Zhang et al.	2024	–	–	–	–	0.237⁽¹⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	1114⁽¹⁾	–	–
Cavallo et al.	2024	2.58	1.60	–	603	0.350	–	–	–
Hunt & Reffert	2023	2.78	1.66	1.18	350	–	–	–	–
Almeida et al.	2023	2.62	2.00	–	316	-0.160	406⁽¹⁾	0.55	–
Just et al.	2023	–	–	–	422	–	1197	–	–
Jaehnig et al.	2021	2.68⁽¹⁾	–	–	–	–	–	–	–
Rain et al.	2021	2.82	1.83	–	316	–	–	–	4
Dias et al.	2021	2.34	1.85	–	337	-0.152	–	–	–
Cantat-Gaudin et al.	2020	3.01	1.52	–	275	–	–	–	–
Cantat-Gaudin & Anders	2020	2.82	–	–	–	–	–	–	–
Liu & Pang	2019	–	–	–	603	0.500	–	–	–
Soubiran et al.	2018	2.82	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	2.82	–	–	–	–	–	–	–
Loktin & Popova	2017	2.19	1.47	–	166	–	–	–	–
Kharchenko et al.	2016	3.06	2.13	–	422	–	–	–	–
Kharchenko et al.	2013	3.06	2.13	–	422	0.070	–	–	–
Gozha et al.	2012	3.31	–	–	316	0.070	–	–	–
van den Bergh	2006	3.31	1.83	–	316	–	–	–	–
Chen et al.	2003	3.31	1.83	–	320	0.070⁽¹⁾	–	–	–
Dias et al.	2002	3.31	1.83	–	316	0.070	–	–	–

(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 0334	15.5	99.64	10.88	0.34	-0.2	-1.09	–	0.0
OC 0335	14.9	99.65	10.88	0.41	-0.2	-0.98	64.76	0.01

💡 Note: The % column shows the percentage of members that Melotte 48 shares with each listed object.

Visualization

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