Melotte 89

(Collinder 190; VDBH 39; NGC 2635; MWSC 1519; OCL 728; vdBergh-Hagen 39; ESO 371 01; FSR 1375)

0.96 UTI

0.79

C_N

1.0

C_dens

1.0

C_C3

1.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 200

Stellar density (N₅₀/rad) 7.8 [N/pc²]

C3 classification AA

C_N 0.79 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 89 is a rich, very dense object of very high C3 quality. Its parallax locates it at a large^* distance, above the mid-plane, affected by moderate extinction. It is catalogued as a massive, metal-poor, 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.

(*): The parallax distance estimate (~6.00 kpc) differs significantly from the median photometric distance (~4.33 kpc).

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

Distant Moderate extinction Massive Metal-poor Intermediate age

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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Melotte 89 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–	129.614	-34.778	0.167	-2.495	2.227	72.877
Li et al.	2025	129.619	-34.777	0.142	-2.503	2.185	–
Hu & Soubiran	2025	129.612	-34.777	–	–	–	–
Almeida et al.	2025	129.625	-34.778	–	–	–	–
Hunt & Reffert	2024	129.621	-34.771	0.168	-2.496	2.239	74.599
Cavallo et al.	2024	129.612	-34.777	0.167	–	–	–
Hunt & Reffert	2023	129.621	-34.771	0.168	-2.496	2.239	74.599
Just et al.	2023	129.603	-34.772	–	–	–	–
Dias et al.	2021	129.625	-34.778	0.144	-2.501	2.17	73.569
Cantat-Gaudin et al.	2020	129.619	-34.777	0.142	-2.503	2.185	–
Cantat-Gaudin & Anders	2020	129.619	-34.777	0.142	-2.503	2.185	–
Soubiran et al.	2018	129.619	-34.777	–	–	–	73.25
Bica et al.	2019	129.602	-34.774	–	–	–	–
Cantat-Gaudin et al.	2018	129.619	-34.777	0.142	-2.503	2.185	–
Kharchenko et al.	2016	129.603	-34.772	–	–	–	–
Dias et al.	2014	129.608	-34.77	–	-4.24	0.76	–
Kharchenko et al.	2013	129.609	-34.775	–	-8.02	0.79	–
Gozha et al.	2012	129.608	-34.77	–	–	–	–
van den Bergh	2006	129.617	-34.76	–	–	–	–
Dias et al.	2002	129.608	-34.77	–	-4.24	0.76	–

💡 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–	4.33	1.08	0.52	531	-0.570	1552	–	–
Li et al.	2025	4.61	1.11	–	517	-0.142	–	–	–
Hu & Soubiran	2025	–	–	–	–	-0.220⁽⁵⁾	–	–	–
Almeida et al.	2025	4.05	1.25	–	525	–	1235	–	–
Hunt & Reffert	2024	–	–	–	–	–	2073⁽¹⁾	–	–
Cavallo et al.	2024	3.53	1.26	–	631	-0.570	–	–	–
Hunt & Reffert	2023	5.87	0.87	0.52	445	–	–	–	–
Just et al.	2023	–	–	–	537	–	1552	–	–
Dias et al.	2021	4.05	1.25	–	525	-0.218	–	–	–
Cantat-Gaudin et al.	2020	5.01	0.90	–	398	–	–	–	–
Cantat-Gaudin & Anders	2020	5.87	–	–	–	–	–	–	–
Soubiran et al.	2018	5.87	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	5.87	–	–	–	–	–	–	–
Kharchenko et al.	2016	3.79	1.03	–	537	–	–	–	–
Kharchenko et al.	2013	3.79	1.03	–	537	-0.610	–	–	–
Gozha et al.	2012	4.00	–	–	603	-0.610	–	–	–
van den Bergh	2006	5.75	1.08	–	316	–	–	–	–
Dias et al.	2002	4.00	1.08	–	603	-0.610	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
HSC 2049	12.5	129.62	-34.77	0.18	-2.49	2.22	75.57	0.0

💡 Note: The % column shows the percentage of members that Melotte 89 shares with each listed object.

Visualization

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