Melotte 206

(NGC 6649; MWSC 2949; OCL 66; FoF 293)

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) 1189

Stellar density (N₅₀/rad) 155.6 [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 206 is a very rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high extinction. It is catalogued as a massive, near-solar metallicity, young cluster, but with a large variance across recent sources for the age, metallicity, and mass parameters (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.

Relatively close High extinction Massive Near-solar metallicity Young

Almeida et al. (2025)
Mass determination: invalid due to poor quality CMD. Isochrone match: worst fit.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Melotte 206 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–	278.358	-10.4	0.474	0.032	-0.116	7.443
Li et al.	2025	278.359	-10.399	0.467	-0.007	-0.055	–
Almeida et al.	2025	278.359	-10.398	–	–	–	–
Hunt & Reffert	2024	278.359	-10.402	0.473	0.037	-0.115	26.441
Cavallo et al.	2024	278.36	-10.399	0.471	–	–	–
Hunt & Reffert	2023	278.359	-10.402	0.473	0.037	-0.115	26.441
Just et al.	2023	278.332	-10.401	–	–	–	–
Jaehnig et al.	2021	278.361	-10.399	0.506	-0.009	-0.039	–
Rain et al.	2021	278.359	-10.399	0.467	-0.007	-0.055	–
Dias et al.	2021	278.359	-10.398	0.467	-0.011	-0.044	-8.854
Cantat-Gaudin et al.	2020	278.359	-10.399	0.467	-0.007	-0.055	–
Cantat-Gaudin & Anders	2020	278.359	-10.399	0.467	-0.007	-0.055	–
Liu & Pang	2019	278.354	-10.402	0.472	-0.003	-0.084	–
Soubiran et al.	2018	278.359	-10.399	–	–	–	-8.87
Bica et al.	2019	278.36	-10.396	–	–	–	–
Cantat-Gaudin et al.	2018	278.359	-10.399	0.467	-0.007	-0.055	–
Loktin & Popova	2017	278.37	-10.404	–	-1.43	-2.479	-8.8
Kharchenko et al.	2016	278.332	-10.401	–	–	–	–
Dias et al.	2014	278.362	-10.403	–	-0.46	0.07	–
Kharchenko et al.	2013	278.34	-10.4	–	-1.1	-2.86	-8.8
Gozha et al.	2012	278.362	-10.403	–	–	–	–
Kharchenko et al.	2007	278.37	-10.4	–	0.04	–	–
van den Bergh	2006	278.375	-10.4	–	–	–	–
Dias et al.	2002	278.363	-10.403	–	0.93	-3.84	-8.59
Dambis	1999	278.362	-10.403	–	–	–	–

💡 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–	1.92	3.9	1.92	42	0.053	4349	–	0.0
Li et al.	2025	0.78	2.88	–	2660	0.053	–	–	–
Almeida et al.	2025	1.92	3.68	–	41	–	4349	–	–
Hunt & Reffert	2024	–	–	–	–	–	10140⁽¹⁾	–	–
Cavallo et al.	2024	2.07	4.55	–	43	0.560	–	–	–
Hunt & Reffert	2023	1.96	4.58	1.92	28	–	–	–	–
Just et al.	2023	–	–	–	126	–	76	–	–
Jaehnig et al.	2021	1.98⁽¹⁾	–	–	–	–	–	–	–
Rain et al.	2021	2.02	3.72	–	36	–	–	–	0
Dias et al.	2021	1.92	3.68	–	41	0.440	–	–	–
Cantat-Gaudin et al.	2020	2.13	3.90	–	71	–	–	–	–
Cantat-Gaudin & Anders	2020	2.02	–	–	–	–	–	–	–
Liu & Pang	2019	–	–	–	120	-1.250	–	–	–
Soubiran et al.	2018	2.02	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	2.02	–	–	–	–	–	–	–
Loktin & Popova	2017	1.34	4.15	–	32	–	–	–	–
Kharchenko et al.	2016	1.56	4.13	–	126	–	–	–	–
Kharchenko et al.	2013	1.56	4.13	–	126	–	–	–	–
Gozha et al.	2012	1.37	–	–	37	0.050	–	–	–
van den Bergh	2006	1.37	3.72	–	37	–	–	–	–
Dias et al.	2002	1.37	3.72	–	37	–	–	–	–
Dambis	1999	1.67	4.04	–	79	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWNU 2835	0.5	278.36	-10.32	0.43	0.24	-0.7	26.05	0.11

💡 Note: The % column shows the percentage of members that Melotte 206 shares with each listed object.

Visualization

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