Melotte 87

(Collinder 188; VDBH 38; NGC 2627; MWSC 1514; OCL 714; vdBergh-Hagen 38; ESO 431 20; FSR 1362; FoF 622)

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) 553

Stellar density (N₅₀/rad) 47.2 [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 87 is a very rich, very dense object of very high C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, old 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.

Relatively close Low extinction Near-solar metallicity Old Contains BSS

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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Melotte 87 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–	129.307	-29.951	0.544	-2.359	2.908	28.414
Li et al.	2025	129.309	-29.952	0.521	-2.381	2.879	–
Hu & Soubiran	2025	129.304	-29.956	–	–	–	–
Wei et al.	2025	129.308	-29.956	0.551	-2.352	2.908	–
Almeida et al.	2025	129.308	-29.953	–	–	–	–
Hunt & Reffert	2024	129.311	-29.949	0.546	-2.357	2.907	29.277
Cavallo et al.	2024	129.304	-29.956	0.547	–	–	–
Hunt & Reffert	2023	129.311	-29.949	0.546	-2.357	2.907	29.277
Just et al.	2023	129.325	-29.942	–	–	–	–
Jaehnig et al.	2021	129.31	-29.948	0.553	-2.378	2.875	–
Rain et al.	2021	129.309	-29.952	0.521	-2.381	2.879	–
Dias et al.	2021	129.308	-29.953	0.522	-2.392	2.876	28.656
Cantat-Gaudin et al.	2020	129.309	-29.952	0.521	-2.381	2.879	–
Cantat-Gaudin & Anders	2020	129.309	-29.952	0.521	-2.381	2.879	–
Liu & Pang	2019	129.304	-29.956	0.516	-2.403	2.861	–
Soubiran et al.	2018	129.309	-29.952	–	–	–	28.68
Bica et al.	2019	129.31	-29.953	–	–	–	–
Cantat-Gaudin et al.	2018	129.309	-29.952	0.521	-2.381	2.879	–
Loktin & Popova	2017	129.315	-29.955	–	-4.11	2.96	26.0
Kharchenko et al.	2016	129.325	-29.942	–	–	–	–
Dias et al.	2014	129.312	-29.955	–	-4.11	2.96	–
Kharchenko et al.	2013	129.33	-29.945	–	-5.0	2.57	26.0
Gozha et al.	2012	129.312	-29.955	–	–	–	–
Piskunov et al.	2008	129.31	-29.953	–	–	–	–
van den Bergh	2006	129.3	-29.95	–	–	–	–
Kharchenko et al.	2005	129.31	-29.95	–	-1.25	4.24	–
Kharchenko et al.	2003	129.33	-29.95	–	-1.86	1.97	–
Dias et al.	2002	129.312	-29.955	–	-4.11	2.96	25.99

💡 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–	1.82	0.3	0.5	1621	-0.120	836	0.52	3.0
Li et al.	2025	1.64	0.40	–	2226	-0.290	–	–	–
Hu & Soubiran	2025	–	–	–	–	-0.140⁽⁵⁾	–	–	–
Wei et al.	2025	1.55	0.03	–	1620	0.500	836	0.52	–
Almeida et al.	2025	1.70	0.39	–	2173	–	999	–	–
Hunt & Reffert	2024	–	–	–	–	–	1821⁽¹⁾	–	–
Cavallo et al.	2024	1.75	0.35	–	1622	0.160	–	–	–
Hunt & Reffert	2023	1.68	0.08	0.50	1892	–	–	–	–
Just et al.	2023	–	–	–	1679	–	424	–	–
Jaehnig et al.	2021	1.80⁽¹⁾	–	–	–	–	–	–	–
Rain et al.	2021	1.82	0.37	–	1413	–	–	–	3
Dias et al.	2021	1.70	0.39	–	2173	-0.165	–	–	–
Cantat-Gaudin et al.	2020	1.84	0.15	–	1862	–	–	–	–
Cantat-Gaudin & Anders	2020	1.82	–	–	–	–	–	–	–
Liu & Pang	2019	–	–	–	1320	0.500	–	–	–
Soubiran et al.	2018	1.82	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	1.82	–	–	–	–	–	–	–
Loktin & Popova	2017	2.03	0.27	–	368	–	–	–	–
Kharchenko et al.	2016	2.71	0.32	–	1679	–	–	–	–
Kharchenko et al.	2013	2.71	0.32	–	1679	-0.120	–	–	–
Gozha et al.	2012	2.00	–	–	1413	-0.080	132	–	–
Piskunov et al.	2008	2.03	0.28	–	513	–	–	–	–
van den Bergh	2006	2.03	0.28	–	372	–	–	–	–
Kharchenko et al.	2005	2.03	0.28	–	513	–	–	–	–
Kharchenko et al.	2003	2.04	0.28	–	–	–	–	–	–
Dias et al.	2002	2.00	0.37	–	1413	-0.120	–	–	–

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

Visualization

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