Melotte 243

(Collinder 455; NGC 7654; MWSC 3725; M 52; OCL 260; FoF 526)

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) 1216

Stellar density (N₅₀/rad) 143.0 [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 243 is a very rich, very dense object of very high C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, young 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.

Relatively close Moderate extinction Massive Near-solar metallicity Young

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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Melotte 243 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–	351.192	61.592	0.608	-1.899	-1.184	-25.876
Wei et al.	2025	351.184	61.588	0.61	-1.893	-1.199	–
Almeida et al.	2025	351.203	61.587	–	–	–	–
Hunt & Reffert	2024	351.19	61.599	0.606	-1.895	-1.191	-23.905
Cavallo et al.	2024	351.206	61.591	0.607	–	–	–
Hunt & Reffert	2023	351.19	61.599	0.606	-1.895	-1.191	-23.905
Just et al.	2023	351.169	61.633	–	–	–	–
Jaehnig et al.	2021	351.208	61.591	0.625	-1.933	-1.128	–
Rain et al.	2021	351.195	61.59	0.596	-1.938	-1.131	–
Dias et al.	2021	351.203	61.587	0.597	-1.936	-1.132	-32.09
Cantat-Gaudin et al.	2020	351.195	61.59	0.596	-1.938	-1.131	–
Cantat-Gaudin & Anders	2020	351.195	61.59	0.596	-1.938	-1.131	–
Liu & Pang	2019	351.182	61.586	0.595	-1.931	-1.134	–
Soubiran et al.	2018	351.195	61.59	–	–	–	-32.09
Bica et al.	2019	351.139	61.589	–	–	–	–
Cantat-Gaudin et al.	2018	351.195	61.59	0.596	-1.938	-1.131	–
Loktin & Popova	2017	351.195	61.593	–	-0.204	-0.851	-40.0
Kharchenko et al.	2016	351.169	61.633	–	–	–	–
Dias et al.	2014	351.2	61.593	–	-0.89	-1.0	–
Kharchenko et al.	2013	351.177	61.637	–	-0.23	-3.5	-40.0
Gozha et al.	2012	351.2	61.593	–	–	–	–
Kharchenko et al.	2012	351.177	61.637	–	-0.17	-3.41	-40.0
Piskunov et al.	2008	351.185	61.586	–	–	–	–
Kharchenko et al.	2007	351.19	61.59	–	0.17	–	-40.0
van den Bergh	2006	351.2	61.583	–	–	–	–
Kharchenko et al.	2005	351.19	61.59	–	-1.72	-2.16	-40.0
Kharchenko et al.	2003	351.15	61.62	–	-1.23	-1.38	–
Chen et al.	2003	351.117	61.649	–	-2.0	-1.78	-35.5
Dias et al.	2002	351.2	61.593	–	-0.89	-1.0	-32.98
Dambis	1999	351.2	61.593	–	–	–	–

💡 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–	1.45	2.02	1.7	79	-0.087	2541	0.27	0.0
Wei et al.	2025	3.43	2.52	–	63	-0.250	2541	0.27	–
Almeida et al.	2025	1.50	2.01	–	52	–	4884	–	–
Hunt & Reffert	2024	–	–	–	–	–	5581⁽¹⁾	–	–
Cavallo et al.	2024	1.70	1.99	–	145	0.530	–	–	–
Hunt & Reffert	2023	1.56	1.95	1.70	84	–	–	–	–
Just et al.	2023	–	–	–	79	–	337	–	–
Jaehnig et al.	2021	1.58⁽¹⁾	–	–	–	–	–	–	–
Rain et al.	2021	1.60	1.77	–	158	–	–	–	0
Dias et al.	2021	1.50	2.01	–	52	0.075	–	–	–
Cantat-Gaudin et al.	2020	1.65	1.85	–	155	–	–	–	–
Cantat-Gaudin & Anders	2020	1.60	–	–	–	–	–	–	–
Liu & Pang	2019	–	–	–	380	-0.750	–	–	–
Soubiran et al.	2018	1.60	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	1.60	–	–	–	–	–	–	–
Loktin & Popova	2017	1.45	1.99	–	59	–	–	–	–
Kharchenko et al.	2016	1.35	2.02	–	79	–	–	–	–
Kharchenko et al.	2013	1.35	2.02	–	79	–	–	–	–
Gozha et al.	2012	1.40	–	–	158	–	155	–	–
Kharchenko et al.	2012	1.35	2.02	–	79	–	–	–	–
Piskunov et al.	2008	1.42	2.02	–	69	–	–	–	–
van den Bergh	2006	1.42	2.02	–	58	–	–	–	–
Kharchenko et al.	2005	1.42	2.02	–	69	–	–	–	–
Kharchenko et al.	2003	1.42	2.02	–	–	–	–	–	–
Chen et al.	2003	1.42	–	–	50	–	–	–	–
Dias et al.	2002	1.40	1.77	–	158	–	–	–	–
Dambis	1999	1.45	2.02	–	71	–	–	–	–

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

Visualization

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