Melotte 67

(Collinder 151; NGC 2421; MWSC 1277; OCL 626; ESO 056 02; FSR 1274; FoF 195)

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) 688

Stellar density (N₅₀/rad) 32.5 [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 67 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 moderate extinction. It is catalogued as a massive, near-solar metallicity, young cluster, but with a large variance across recent sources for the mass parameter (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 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 67 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–	114.054	-20.629	0.36	-3.118	3.125	58.168
Li et al.	2025	114.051	-20.627	0.343	-3.131	3.097	–
Almeida et al.	2025	114.05	-20.631	–	–	–	–
Hunt & Reffert	2024	114.047	-20.622	0.362	-3.12	3.128	57.866
Cavallo et al.	2024	114.048	-20.634	0.362	–	–	–
Hunt & Reffert	2023	114.047	-20.622	0.362	-3.12	3.128	57.866
Almeida et al.	2023	114.057	-20.632	–	–	–	–
Just et al.	2023	114.054	-20.608	–	–	–	–
Jaehnig et al.	2021	114.05	-20.628	0.374	-3.134	3.096	–
Rain et al.	2021	114.051	-20.627	0.343	-3.131	3.097	–
Dias et al.	2021	114.05	-20.631	0.345	-3.147	3.093	–
Cantat-Gaudin et al.	2020	114.051	-20.627	0.343	-3.131	3.097	–
Sánchez et al.	2020	114.054	-20.612	–	-3.074	3.133	–
Cantat-Gaudin & Anders	2020	114.051	-20.627	0.343	-3.131	3.097	–
Liu & Pang	2019	114.087	-20.605	0.333	-2.849	3.034	–
Bica et al.	2019	114.051	-20.624	–	–	–	–
Cantat-Gaudin et al.	2018	114.051	-20.627	0.343	-3.131	3.097	–
Loktin & Popova	2017	114.06	-20.611	–	-1.264	3.949	–
Kharchenko et al.	2016	114.054	-20.608	–	–	–	–
Dias et al.	2014	114.054	-20.612	–	-3.07	2.41	–
Kharchenko et al.	2013	114.06	-20.61	–	-2.92	4.81	–
Piskunov et al.	2008	114.055	-20.611	–	–	–	–
van den Bergh	2006	114.05	-20.617	–	–	–	–
Kharchenko et al.	2005	114.06	-20.61	–	-3.37	4.43	–
Kharchenko et al.	2003	114.07	-20.62	–	-4.26	4.89	–
Dias et al.	2002	114.054	-20.612	–	-3.07	2.41	–
Dambis	1999	114.05	-20.617	–	–	–	–

💡 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–	2.39	1.4	0.78	58	-0.060	1857	0.52	0.0
Li et al.	2025	2.51	1.31	–	105	-0.047	–	–	–
Almeida et al.	2025	2.41	1.45	–	75	–	2370	–	–
Hunt & Reffert	2024	–	–	–	–	–	3020⁽¹⁾	–	–
Cavallo et al.	2024	2.65	1.53	–	50	-0.060	–	–	–
Hunt & Reffert	2023	2.46	1.14	0.78	77	–	–	–	–
Almeida et al.	2023	2.37	1.45	–	68	-0.109	1344⁽¹⁾	0.52	–
Just et al.	2023	–	–	–	28	–	368	–	–
Jaehnig et al.	2021	2.71⁽¹⁾	–	–	–	–	–	–	–
Rain et al.	2021	2.69	1.30	–	79	–	–	–	0
Dias et al.	2021	2.41	1.45	–	75	-0.100	–	–	–
Cantat-Gaudin et al.	2020	2.68	1.15	–	66	–	–	–	–
Cantat-Gaudin & Anders	2020	2.69	–	–	–	–	–	–	–
Liu & Pang	2019	–	–	–	234	0.250	–	–	–
Cantat-Gaudin et al.	2018	2.69	–	–	–	–	–	–	–
Loktin & Popova	2017	2.28	1.32	–	28	–	–	–	–
Kharchenko et al.	2016	2.18	1.42	–	28	–	–	–	–
Kharchenko et al.	2013	2.18	1.42	–	28	–	–	–	–
Piskunov et al.	2008	2.18	1.40	–	26	–	–	–	–
van den Bergh	2006	2.18	1.40	–	23	–	–	–	–
Kharchenko et al.	2005	2.18	1.40	–	26	–	–	–	–
Kharchenko et al.	2003	2.17	1.40	–	–	–	–	–	–
Dias et al.	2002	2.20	1.30	–	79	–	–	–	–
Dambis	1999	2.00	1.26	–	32	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
OC 0405	3.6	114.0	-20.64	0.38	-3.08	3.14	–	0.0

💡 Note: The % column shows the percentage of members that Melotte 67 shares with each listed object.

Visualization

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