Melotte 183

(Collinder 354; VDBH 254; NGC 6475; MWSC 2739; M 7; OCL 1028; vdBergh-Hagen 254; ESO 394 09; FoF 2404; OCSN 240)

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) 964

Stellar density (N₅₀/rad) 117.0 [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 183 is a very rich, very dense object of very high C3 quality. Its parallax locates it at a very close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is very well-studied in the literature.

Note: This object contains blue stragglers according to at least one source.

Very close Low 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 183 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–	268.471	-34.831	3.578	3.075	-5.397	-14.533
Nizovkina et al.	2025	268.476	-34.828	–	–	–	–
Li et al.	2025	268.447	-34.841	3.572	3.099	-5.426	–
Wei et al.	2025	268.469	-34.841	3.579	3.07	-5.403	–
Almeida et al.	2025	268.397	-34.88	–	–	–	–
Alfonso et al.	2024	268.477	-34.81	3.539	3.075	-5.389	–
Hunt & Reffert	2024	268.476	-34.828	3.583	3.08	-5.366	-14.55
Cavallo et al.	2024	268.483	-34.784	3.583	–	–	–
Hunt & Reffert	2023	268.476	-34.828	3.583	3.08	-5.366	-14.55
Almeida et al.	2023	268.421	-34.872	–	–	–	–
Qin et al.	2023	268.45	-34.82	3.58	3.06	-5.38	-14.24
He et al.	2022	268.446	-34.793	3.584	3.033	-5.37	–
Tarricq et al.	2022	268.434	-34.879	3.591	3.067	-5.404	–
Jaehnig et al.	2021	268.466	-34.782	3.599	3.097	-5.316	–
Rain et al.	2021	268.447	-34.841	3.572	3.099	-5.426	–
Dias et al.	2021	268.397	-34.88	3.567	3.105	-5.399	-14.591
Cantat-Gaudin et al.	2020	268.447	-34.841	3.572	3.099	-5.426	–
Cantat-Gaudin & Anders	2020	268.447	-34.841	3.572	3.099	-5.426	–
Liu & Pang	2019	268.475	-34.804	3.593	3.105	-5.313	–
Bossini et al.	2019	268.447	-34.841	–	–	–	–
Soubiran et al.	2018	268.447	-34.841	–	–	–	-14.84
Bica et al.	2019	268.466	-34.807	–	–	–	–
Cantat-Gaudin et al.	2018	268.447	-34.841	3.572	3.099	-5.426	–
Yen et al.	2018	268.373	-34.656	3.45	3.15	-5.51	–
Loktin & Popova	2017	268.455	-34.794	–	1.67	-3.6	-12.6
Kharchenko et al.	2016	268.431	-34.781	–	–	–	–
Dias et al.	2014	268.462	-34.793	–	-3.19	-4.08	–
Kharchenko et al.	2013	268.44	-34.78	–	2.58	-4.98	-12.6
Gozha et al.	2012	268.462	-34.793	–	–	–	–
Piskunov et al.	2008	268.451	-34.789	–	–	–	–
Kharchenko et al.	2007	268.45	-34.79	–	1.2	–	-14.21
Piskunov et al.	2007	268.451	-34.789	–	–	–	–
van den Bergh	2006	268.45	-34.783	–	–	–	–
Kharchenko et al.	2005	268.45	-34.79	–	2.83	-5.14	-14.21
Kharchenko et al.	2003	268.47	-34.8	–	2.82	-5.26	–
Chen et al.	2003	268.476	-34.812	–	–	–	–
Dias et al.	2002	268.462	-34.793	–	1.67	-3.6	-14.78

💡 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–	0.285	0.31	0.65	224	0.030	791	0.285	1.0
Nizovkina et al.	2025	0.24⁽⁴⁾	0.21⁽⁴⁾	–	292⁽⁴⁾	-0.044⁽⁴⁾	–	–	–
Li et al.	2025	0.27	0.26	–	341	0.047	–	–	–
Wei et al.	2025	0.37	0.66	–	68	0.000	1247	0.14	–
Almeida et al.	2025	0.28	0.38	–	273	–	993	–	–
Alfonso et al.	2024	0.29	0.30	–	271	0.020	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	2379⁽¹⁾	–	–
Cavallo et al.	2024	0.27	0.95	–	126	-0.040	–	–	–
Hunt & Reffert	2023	0.27	0.21	0.65	171	–	–	–	–
Almeida et al.	2023	0.27	0.20	–	465	0.114	791⁽¹⁾	0.43	–
Qin et al.	2023	0.32	0.37	–	200	–	–	–	–
He et al.	2022	–	0.50	–	141	–	–	–	–
Tarricq et al.	2022	0.28	–	–	224	–	–	–	–
Jaehnig et al.	2021	0.28⁽¹⁾	–	–	–	–	–	–	–
Rain et al.	2021	0.28	0.31	–	295	–	–	–	1
Dias et al.	2021	0.28	0.38	–	273	0.019	–	–	–
Cantat-Gaudin et al.	2020	0.29	0.30	–	224	–	–	–	–
Cantat-Gaudin & Anders	2020	0.28	–	–	–	–	–	–	–
Liu & Pang	2019	–	–	–	186	-0.250	–	–	–
Bossini et al.	2019	0.28	0.15	–	300	0.070	–	–	–
Soubiran et al.	2018	0.28	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	0.28	–	–	–	–	–	–	–
Yen et al.	2018	0.30	0.48	–	195	–	–	–	–
Loktin & Popova	2017	0.30	0.32	–	299	–	–	–	–
Kharchenko et al.	2016	0.30	0.68	–	178	–	–	–	–
Kharchenko et al.	2013	0.30	0.68	–	178	0.140	–	–	–
Gozha et al.	2012	0.30	–	–	299	0.140	661	–	–
Piskunov et al.	2008	0.30	0.31	–	166	–	735⁽¹⁾	–	–
Piskunov et al.	2007	0.30	0.31	–	166	–	436	–	–
van den Bergh	2006	0.30	0.31	–	302	–	–	–	–
Kharchenko et al.	2005	0.30	0.31	–	166	–	–	–	–
Kharchenko et al.	2003	0.28	0.31	–	–	–	–	–	–
Chen et al.	2003	0.30	0.32	–	290	0.030⁽¹⁾	–	–	–
Dias et al.	2002	0.30	0.32	–	299	0.140	–	–	–

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

Visualization

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