Melotte 161

(Collinder 324; VDBH 213; NGC 6281; MWSC 2530; OCL 1003; vdBergh-Hagen 213; ESO 332 19; FoF 2332; OCSN 238)

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) 606

Stellar density (N₅₀/rad) 122.6 [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 161 is a very rich, very dense object of very high C3 quality. Its parallax locates it at a 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 and mass parameters (see Parameters). It is very well-studied in the literature.

Close Low extinction Near-solar metallicity Intermediate age

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 161 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–	256.184	-37.955	1.884	-1.884	-4.045	-5.322
Li et al.	2025	256.179	-37.948	1.873	-1.856	-4.017	–
Wei et al.	2025	256.181	-37.95	1.885	-1.902	-4.044	–
Almeida et al.	2025	256.181	-37.952	–	–	–	–
Alfonso et al.	2024	256.182	-37.946	1.845	-1.888	-4.044	–
Hunt & Reffert	2024	256.189	-37.941	1.885	-1.881	-4.05	-5.662
Cavallo et al.	2024	256.195	-37.947	1.886	–	–	–
Hunt & Reffert	2023	256.189	-37.941	1.885	-1.881	-4.05	-5.662
Qin et al.	2023	256.17	-37.95	1.88	-1.9	-4.06	-4.8
Just et al.	2023	256.16	-37.98	–	–	–	–
He et al.	2022	256.18	-37.946	1.884	-1.902	-4.051	–
Tarricq et al.	2022	256.205	-37.938	1.888	-1.899	-4.049	–
Jaehnig et al.	2021	256.191	-37.955	1.91	-1.833	-4.039	–
Rain et al.	2021	256.179	-37.948	1.873	-1.856	-4.017	–
Dias et al.	2021	256.181	-37.952	1.876	-1.871	-4.005	-6.415
Cantat-Gaudin et al.	2020	256.179	-37.948	1.873	-1.856	-4.017	–
Cantat-Gaudin & Anders	2020	256.179	-37.948	1.873	-1.856	-4.017	–
Liu & Pang	2019	256.169	-37.943	1.882	-1.897	-3.989	–
Soubiran et al.	2018	256.179	-37.948	–	–	–	-5.0
Bica et al.	2019	256.166	-37.945	–	–	–	–
Cantat-Gaudin et al.	2018	256.179	-37.948	1.873	-1.856	-4.017	–
Loktin & Popova	2017	256.17	-37.986	–	-6.478	-3.407	-15.4
Kharchenko et al.	2016	256.16	-37.98	–	–	–	–
Dias et al.	2014	256.171	-37.985	–	-2.27	-2.71	–
Kharchenko et al.	2013	256.17	-37.98	–	-2.96	-3.75	-15.4
Gozha et al.	2012	256.171	-37.985	–	–	–	–
Piskunov et al.	2008	256.155	-37.989	–	–	–	–
Kharchenko et al.	2007	256.17	-37.99	–	0.45	–	-15.43
Piskunov et al.	2007	256.155	-37.989	–	–	–	–
van den Bergh	2006	256.175	-37.983	–	–	–	–
Kharchenko et al.	2005	256.17	-37.99	–	-2.96	-3.75	-15.43
Kharchenko et al.	2003	256.17	-37.95	–	-3.33	-3.85	–
Chen et al.	2003	256.173	-37.987	–	–	–	–
Dias et al.	2002	256.171	-37.985	–	-2.14	-2.97	-5.58

💡 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–	0.52	0.46	0.8	316	0.043	214	0.46	0.0
Li et al.	2025	0.53	0.43	–	472	0.144	–	–	–
Wei et al.	2025	0.62	0.57	–	275	0.250	1061	0.46	–
Almeida et al.	2025	0.52	0.63	–	328	–	988	–	–
Alfonso et al.	2024	0.54	0.30	–	648	0.044	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	1414⁽¹⁾	–	–
Cavallo et al.	2024	0.53	0.82	–	186	0.080	–	–	–
Hunt & Reffert	2023	0.50	0.37	0.80	274	–	–	–	–
Qin et al.	2023	0.66	0.62	–	224	–	–	–	–
Just et al.	2023	–	–	–	316	–	26	–	–
He et al.	2022	–	0.75	–	282	–	–	–	–
Tarricq et al.	2022	0.53	–	–	513	–	–	–	–
Jaehnig et al.	2021	0.52⁽¹⁾	–	–	–	–	–	–	–
Rain et al.	2021	0.53	0.43	–	309	–	–	–	0
Dias et al.	2021	0.52	0.63	–	328	0.042	–	–	–
Cantat-Gaudin et al.	2020	0.54	0.30	–	513	–	–	–	–
Cantat-Gaudin & Anders	2020	0.53	–	–	–	–	–	–	–
Liu & Pang	2019	–	–	–	269	0.250	–	–	–
Soubiran et al.	2018	0.53	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	0.53	–	–	–	–	–	–	–
Loktin & Popova	2017	0.50	0.46	–	313	–	–	–	–
Kharchenko et al.	2016	0.51	0.60	–	316	–	–	–	–
Kharchenko et al.	2013	0.51	0.60	–	316	0.000	–	–	–
Gozha et al.	2012	0.48	–	–	314	0.000	162	–	–
Piskunov et al.	2008	0.49	0.46	–	324	–	214⁽¹⁾	–	–
Piskunov et al.	2007	0.49	0.46	–	324	–	101	–	–
van den Bergh	2006	0.48	0.46	–	316	–	–	–	–
Kharchenko et al.	2005	0.49	0.46	–	324	–	–	–	–
Kharchenko et al.	2003	0.48	0.46	–	–	–	–	–	–
Chen et al.	2003	0.48	0.46	–	310	0.000⁽¹⁾	–	–	–
Dias et al.	2002	0.48	0.46	–	314	0.000	–	–	–

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

Visualization

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