Melotte 182

(Collinder 353; NGC 6469; MWSC 2735; OCL 21; ESO 589 18)

0.92 UTI

0.59

C_N

1.0

C_dens

1.0

C_C3

1.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 68

Stellar density (N₅₀/rad) 30.5 [N/pc²]

C3 classification AA

C_N 0.59 Moderately populated
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 182 is a moderately populated, very dense object of very high C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age 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.

Relatively close Moderate extinction Near-solar metallicity Intermediate age

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 182 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–	268.271	-22.298	0.584	0.687	0.782	-8.464
Li et al.	2025	268.277	-22.3	0.587	0.638	0.813	–
Almeida et al.	2025	268.278	-22.295	–	–	–	–
Hunt & Reffert	2024	268.268	-22.305	0.578	0.722	0.747	-1.914
Cavallo et al.	2024	268.271	-22.293	0.579	–	–	–
Hunt & Reffert	2023	268.268	-22.305	0.578	0.722	0.747	-1.914
Just et al.	2023	268.297	-22.316	–	–	–	–
Dias et al.	2021	268.278	-22.295	0.598	0.634	0.814	–
Cantat-Gaudin et al.	2020	268.277	-22.3	0.587	0.638	0.813	–
Cantat-Gaudin & Anders	2020	268.277	-22.3	0.587	0.638	0.813	–
Bica et al.	2019	268.31	-22.318	–	–	–	–
Cantat-Gaudin et al.	2018	268.277	-22.3	0.587	0.638	0.813	–
Kharchenko et al.	2016	268.297	-22.316	–	–	–	–
Dias et al.	2014	268.3	-22.275	–	0.53	-2.86	–
Kharchenko et al.	2013	268.305	-22.315	–	0.84	-4.51	–
Piskunov et al.	2008	268.295	-22.322	–	–	–	–
Kharchenko et al.	2005	268.3	-22.32	–	3.04	-1.2	–
Kharchenko et al.	2003	268.3	-22.34	–	2.66	-2.82	–
Dias et al.	2002	268.3	-22.275	–	0.14	-2.89	–

💡 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–	1.325	1.71	2.03	210	0.059	259	–	–
Li et al.	2025	1.38	1.96	–	190	0.059	–	–	–
Almeida et al.	2025	1.60	2.06	–	88	–	259	–	–
Hunt & Reffert	2024	–	–	–	–	–	792⁽¹⁾	–	–
Cavallo et al.	2024	1.27	2.46	–	129	-0.440	–	–	–
Hunt & Reffert	2023	1.61	2.23	2.03	28	–	–	–	–
Just et al.	2023	–	–	–	750	–	42	–	–
Dias et al.	2021	1.60	2.06	–	88	0.304	–	–	–
Cantat-Gaudin et al.	2020	1.71	1.62	–	69	–	–	–	–
Cantat-Gaudin & Anders	2020	1.62	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	1.62	–	–	–	–	–	–	–
Kharchenko et al.	2016	0.69	1.03	–	750	–	–	–	–
Kharchenko et al.	2013	0.69	1.03	–	750	–	–	–	–
Piskunov et al.	2008	0.55	0.93	–	229	–	–	–	–
Kharchenko et al.	2005	0.55	0.93	–	229	–	–	–	–
Kharchenko et al.	2003	0.62	0.93	–	–	–	–	–	–
Dias et al.	2002	1.10	1.80	–	251	–	–	–	–

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

Visualization

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