Melotte 90

(Collinder 195; VDBH 48; NGC 2658; MWSC 1542; OCL 723; vdBergh-Hagen 48; ESO 432 04; FSR 1373; FoF 593)

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) 726

Stellar density (N₅₀/rad) 26.5 [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 90 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 absorption 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.

Distant Low extinction Massive Near-solar metallicity Intermediate age

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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Melotte 90 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–	130.87	-32.66	0.222	-2.475	2.274	52.332
Li et al.	2025	130.868	-32.662	0.197	-2.481	2.269	–
Hu & Soubiran	2025	130.864	-32.664	–	–	–	–
Almeida et al.	2025	130.865	-32.662	–	–	–	–
Hunt & Reffert	2024	130.865	-32.666	0.226	-2.47	2.284	53.624
Cavallo et al.	2024	130.864	-32.664	0.225	–	–	–
Hunt & Reffert	2023	130.865	-32.666	0.226	-2.47	2.284	53.624
Cordoni et al.	2023	130.865	-32.662	0.197	-2.483	2.265	–
Just et al.	2023	130.869	-32.662	–	–	–	–
Jaehnig et al.	2021	130.87	-32.661	0.228	-2.48	2.267	–
Rain et al.	2021	130.868	-32.662	0.197	-2.481	2.269	–
Dias et al.	2021	130.865	-32.662	0.197	-2.483	2.265	54.314
Cantat-Gaudin et al.	2020	130.868	-32.662	0.197	-2.481	2.269	–
Cantat-Gaudin & Anders	2020	130.868	-32.662	0.197	-2.481	2.269	–
Liu & Pang	2019	130.855	-32.671	0.247	-2.587	2.326	–
Bossini et al.	2019	130.868	-32.662	–	–	–	–
Soubiran et al.	2018	130.868	-32.662	–	–	–	52.93
Bica et al.	2019	130.866	-32.662	–	–	–	–
Cantat-Gaudin et al.	2018	130.868	-32.662	0.197	-2.481	2.269	–
Loktin & Popova	2017	130.86	-32.658	–	-2.455	1.854	–
Kharchenko et al.	2016	130.869	-32.662	–	–	–	–
Dias et al.	2014	130.862	-32.658	–	-1.51	1.66	–
Kharchenko et al.	2013	130.875	-32.665	–	-3.13	1.7	–
Gozha et al.	2012	130.863	-32.658	–	–	–	–
van den Bergh	2006	130.85	-32.65	–	–	–	–
Dias et al.	2002	130.863	-32.658	–	-1.51	1.66	–

💡 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–	3.53	0.59	0.57	603	-0.112	2626	0.47	0.0
Li et al.	2025	3.65	0.97	–	539	-0.144	–	–	–
Hu & Soubiran	2025	–	–	–	–	-0.250⁽⁵⁾	–	–	–
Almeida et al.	2025	3.53	1.00	–	540	–	2530	–	–
Hunt & Reffert	2024	–	–	–	–	–	3555⁽¹⁾	–	–
Cavallo et al.	2024	3.30	0.98	–	603	-0.140	–	–	–
Hunt & Reffert	2023	4.12	0.54	0.57	442	–	–	–	–
Cordoni et al.	2023	3.53	1.00	–	540	-0.112	2721	0.47	0.00
Just et al.	2023	–	–	–	944	–	1778	–	–
Jaehnig et al.	2021	4.39⁽¹⁾	–	–	–	–	–	–	–
Rain et al.	2021	4.43	0.12	–	1413	–	–	–	0
Dias et al.	2021	3.53	1.00	–	540	-0.112	–	–	–
Cantat-Gaudin et al.	2020	4.06	0.64	–	501	–	–	–	–
Cantat-Gaudin & Anders	2020	4.43	–	–	–	–	–	–	–
Liu & Pang	2019	–	–	–	525	0.250	–	–	–
Bossini et al.	2019	3.75	0.71	–	502	-0.010	–	–	–
Soubiran et al.	2018	4.43	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	4.43	–	–	–	–	–	–	–
Loktin & Popova	2017	2.49	0.17	–	1167	–	–	–	–
Kharchenko et al.	2016	3.12	0.26	–	944	–	–	–	–
Kharchenko et al.	2013	3.12	0.26	–	944	–	–	–	–
Gozha et al.	2012	2.02	–	–	1419	-0.940	–	–	–
van den Bergh	2006	2.02	0.12	–	1413	–	–	–	–
Dias et al.	2002	2.02	0.13	–	1419	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
OC 0445	3.4	130.88	-32.66	0.27	-2.46	2.26	52.44	0.0

💡 Note: The % column shows the percentage of members that Melotte 90 shares with each listed object.

Visualization

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