Collinder 201

(VDBH 51; NGC 2671; MWSC 1558; OCL 745; vdBergh-Hagen 51; ESO 313 14; FSR 1409; FoF 1463)

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) 810

Stellar density (N₅₀/rad) 75.2 [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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Collinder 201 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 near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the distance, 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.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Collinder 201 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–	131.564	-41.884	0.7	-1.545	1.015	19.441
Li et al.	2025	131.557	-41.886	0.687	-1.569	0.94	–
Hu & Soubiran	2025	131.57	-41.888	–	–	–	–
Wei et al.	2025	131.567	-41.888	0.708	-1.531	1.012	–
Almeida et al.	2025	131.562	-41.885	–	–	–	–
Hunt & Reffert	2024	131.556	-41.88	0.704	-1.535	1.009	26.562
Cavallo et al.	2024	131.57	-41.887	0.703	–	–	–
Hunt & Reffert	2023	131.556	-41.88	0.704	-1.535	1.009	26.562
Almeida et al.	2023	131.559	-41.878	–	–	–	–
Just et al.	2023	131.548	-41.863	–	–	–	–
Tarricq et al.	2022	131.553	-41.883	0.709	-1.52	1.013	–
Dias et al.	2021	131.562	-41.885	0.689	-1.538	0.92	7.281
Cantat-Gaudin et al.	2020	131.557	-41.886	0.687	-1.569	0.94	–
Sánchez et al.	2020	131.55	-41.878	–	-1.678	0.896	–
Cantat-Gaudin & Anders	2020	131.557	-41.886	0.687	-1.569	0.94	–
Liu & Pang	2019	131.57	-41.886	0.665	-1.561	0.975	–
Soubiran et al.	2018	131.557	-41.886	–	–	–	6.35
Bica et al.	2019	131.545	-41.884	–	–	–	–
Cantat-Gaudin et al.	2018	131.557	-41.886	0.687	-1.569	0.94	–
Loktin & Popova	2017	131.55	-41.878	–	-3.992	1.588	–
Kharchenko et al.	2016	131.548	-41.863	–	–	–	–
Dias et al.	2014	131.55	-41.878	–	-1.27	-0.48	–
Kharchenko et al.	2013	131.553	-41.867	–	-4.87	2.47	–
van den Bergh	2006	131.55	-41.883	–	–	–	–
Dias et al.	2002	131.55	-41.878	–	-1.27	-0.48	–

💡 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–	1.37	2.82	1.79	339	0.219	943	0.605	–
Li et al.	2025	1.18	2.66	–	825	-0.154	–	–	–
Hu & Soubiran	2025	–	–	–	–	-0.270⁽⁵⁾	–	–	–
Wei et al.	2025	4.13	2.82	–	501	0.500	1209	0.63	–
Almeida et al.	2025	1.37	2.67	–	274	–	757	–	–
Hunt & Reffert	2024	–	–	–	–	–	2744⁽¹⁾	–	–
Cavallo et al.	2024	1.40	2.69	–	661	0.510	–	–	–
Hunt & Reffert	2023	1.34	2.84	1.79	254	–	–	–	–
Almeida et al.	2023	1.33	2.82	–	414	-0.020	943⁽¹⁾	0.58	–
Just et al.	2023	–	–	–	339	–	156	–	–
Tarricq et al.	2022	1.33	–	–	363	–	–	–	–
Dias et al.	2021	1.37	2.67	–	274	0.219	–	–	–
Cantat-Gaudin et al.	2020	1.39	2.31	–	331	–	–	–	–
Cantat-Gaudin & Anders	2020	1.40	–	–	–	–	–	–	–
Liu & Pang	2019	–	–	–	468	0.250	–	–	–
Soubiran et al.	2018	1.40	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	1.40	–	–	–	–	–	–	–
Loktin & Popova	2017	1.36	3.15	–	75	–	–	–	–
Kharchenko et al.	2016	1.31	3.03	–	339	–	–	–	–
Kharchenko et al.	2013	1.31	3.03	–	339	–	–	–	–
van den Bergh	2006	1.66	3.22	–	79	–	–	–	–
Dias et al.	2002	1.66	3.22	–	79	–	–	–	–

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

Visualization

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