Collinder 211

(VDBH 76; NGC 2972; MWSC 1699; OCL 778; vdBergh-Hagen 76; ESO 212 11; FoF 395)

0.91 UTI

0.82

C_N

1.0

C_dens

0.75

C_C3

1.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 289

Stellar density (N₅₀/rad) 28.3 [N/pc²]

C3 classification AB

C_N 0.82 Rich
C_dens 1.0 Very dense
C_C3 0.75 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

ℹ️

Collinder 211 is a rich, very dense object of high C3 quality. Its parallax locates it at a moderate 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 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: good fit. Isochrone match: good fit.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Collinder 211 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	145.053	-50.327	0.491	-5.051	2.516	20.225
Li et al.	2025	145.058	-50.326	0.483	-5.085	2.489	–
Hu & Soubiran	2025	145.047	-50.329	–	–	–	–
Almeida et al.	2025	145.053	-50.331	–	–	–	–
Hunt & Reffert	2024	145.062	-50.324	0.488	-5.051	2.531	9.509
Cavallo et al.	2024	145.046	-50.329	0.492	–	–	–
Hunt & Reffert	2023	145.062	-50.324	0.488	-5.051	2.531	9.509
Almeida et al.	2023	145.051	-50.331	–	–	–	–
Just et al.	2023	145.051	-50.322	–	–	–	–
Jaehnig et al.	2021	145.059	-50.325	0.512	-5.06	2.469	–
Rain et al.	2021	145.058	-50.326	0.483	-5.085	2.489	–
Dias et al.	2021	145.053	-50.331	0.487	-5.092	2.501	21.104
Cantat-Gaudin et al.	2020	145.058	-50.326	0.483	-5.085	2.489	–
Sánchez et al.	2020	145.05	-50.323	–	-5.387	2.443	–
Cantat-Gaudin & Anders	2020	145.058	-50.326	0.483	-5.085	2.489	–
Liu & Pang	2019	145.059	-50.33	0.485	-5.187	2.636	–
Bossini et al.	2019	145.058	-50.326	–	–	–	–
Soubiran et al.	2018	145.058	-50.326	–	–	–	21.13
Bica et al.	2019	145.036	-50.325	–	–	–	–
Cantat-Gaudin et al.	2018	145.058	-50.326	0.483	-5.085	2.489	–
Loktin & Popova	2017	145.05	-50.322	–	-3.64	5.31	20.9
Kharchenko et al.	2016	145.051	-50.322	–	–	–	–
Dias et al.	2014	145.05	-50.323	–	-3.64	5.31	–
Kharchenko et al.	2013	145.057	-50.325	–	-4.34	6.06	20.9
Gozha et al.	2012	145.05	-50.323	–	–	–	–
van den Bergh	2006	145.119	-50.336	–	–	–	–
Chen et al.	2003	145.095	-50.358	–	–	–	–
Dias et al.	2002	145.05	-50.323	–	-3.64	5.31	20.89

💡 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–	1.95	1.22	1.15	442	-0.073	356	0.48	0.0
Li et al.	2025	1.61	1.22	–	716	-0.074	–	–	–
Hu & Soubiran	2025	–	–	–	–	-0.220⁽⁵⁾	–	–	–
Almeida et al.	2025	1.74	1.53	–	445	–	378	–	–
Hunt & Reffert	2024	–	–	–	–	–	782⁽¹⁾	–	–
Cavallo et al.	2024	1.89	1.32	–	589	0.290	–	–	–
Hunt & Reffert	2023	1.86	1.30	1.15	349	–	–	–	–
Almeida et al.	2023	1.82	1.57	–	428	0.029	335⁽¹⁾	0.48	–
Just et al.	2023	–	–	–	537	–	35	–	–
Jaehnig et al.	2021	1.95⁽¹⁾	–	–	–	–	–	–	–
Rain et al.	2021	1.95	1.18	–	437	–	–	–	0
Dias et al.	2021	1.74	1.53	–	445	0.051	–	–	–
Cantat-Gaudin et al.	2020	1.99	1.22	–	490	–	–	–	–
Cantat-Gaudin & Anders	2020	1.95	–	–	–	–	–	–	–
Liu & Pang	2019	–	–	–	1120	-1.000	–	–	–
Bossini et al.	2019	1.91	1.20	–	439	-0.090	–	–	–
Soubiran et al.	2018	1.95	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	1.95	–	–	–	–	–	–	–
Loktin & Popova	2017	2.06	1.06	–	93	–	–	–	–
Kharchenko et al.	2016	1.78	1.74	–	537	–	–	–	–
Kharchenko et al.	2013	1.78	1.74	–	537	-0.073	–	–	–
Gozha et al.	2012	2.06	–	–	93	-0.100	–	–	–
van den Bergh	2006	2.06	1.05	–	93	–	–	–	–
Chen et al.	2003	2.06	1.06	–	90	-0.070⁽¹⁾	–	–	–
Dias et al.	2002	2.06	1.06	–	93	-0.073	–	–	–

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

Visualization

ℹ️

1 2 3