Collinder 218

(VDBH 93; NGC 3228; MWSC 1794; OCL 800; vdBergh-Hagen 93; ESO 214 01; FoF 2420; OCSN 235)

0.96 UTI

0.81

C_N

1.0

C_dens

1.0

C_C3

1.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 267

Stellar density (N₅₀/rad) 12.1 [N/pc²]

C3 classification AA

C_N 0.81 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 218 is a rich, very dense object of very high C3 quality. Its parallax locates it at a very close distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, young 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 Young

Almeida et al. (2025)
Mass determination: intermediate fit. Isochrone match: good fit. Silver sample.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Collinder 218 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–	155.356	-51.801	2.066	-14.855	-0.617	12.447
Li et al.	2025	155.378	-51.814	2.036	-14.867	-0.696	–
Almeida et al.	2025	155.463	-51.757	–	–	–	–
Alfonso et al.	2024	155.332	-51.814	2.049	-14.867	-0.605	–
Hunt & Reffert	2024	155.278	-51.845	2.073	-14.855	-0.595	11.607
Cavallo et al.	2024	155.399	-51.803	2.074	–	–	–
Hunt & Reffert	2023	155.278	-51.845	2.073	-14.855	-0.595	11.607
Almeida et al.	2023	155.403	-51.773	–	–	–	–
Qin et al.	2023	155.31	-51.83	2.08	-14.78	-0.6	14.05
Just et al.	2023	155.349	-51.727	–	–	–	–
He et al.	2022	155.357	-51.795	2.079	-14.848	-0.609	–
Jaehnig et al.	2021	155.283	-51.8	2.055	-14.902	-0.707	–
Rain et al.	2021	155.378	-51.814	2.036	-14.867	-0.696	–
Dias et al.	2021	155.463	-51.757	2.029	-14.855	-0.667	14.52
Cantat-Gaudin et al.	2020	155.378	-51.814	2.036	-14.867	-0.696	–
Cantat-Gaudin & Anders	2020	155.378	-51.814	2.036	-14.867	-0.696	–
Liu & Pang	2019	155.409	-51.842	2.029	-14.908	-0.638	–
Bossini et al.	2019	155.378	-51.814	–	–	–	–
Soubiran et al.	2018	155.378	-51.814	–	–	–	13.78
Bica et al.	2019	155.355	-51.74	–	–	–	–
Cantat-Gaudin et al.	2018	155.378	-51.814	2.036	-14.867	-0.696	–
Loktin & Popova	2017	155.34	-51.727	–	-15.64	-0.05	-22.4
Kharchenko et al.	2016	155.349	-51.727	–	–	–	–
Dias et al.	2014	155.342	-51.728	–	-4.98	0.25	–
Kharchenko et al.	2013	155.355	-51.73	–	-13.5	0.03	-22.4
Gozha et al.	2012	155.342	-51.728	–	–	–	–
Piskunov et al.	2008	155.327	-51.729	–	–	–	–
van den Bergh	2006	155.35	-51.733	–	–	–	–
Kharchenko et al.	2005	155.34	-51.73	–	-13.81	0.01	–
Kharchenko et al.	2003	155.35	-51.74	–	-13.43	0.58	–
Dias et al.	2002	155.342	-51.728	–	-15.64	-0.05	-22.39

💡 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–	0.5	0.11	0.52	46	0.046	166	0.52	0.0
Li et al.	2025	0.46	0.15	–	39	0.062	–	–	–
Almeida et al.	2025	0.48	0.20	–	46	–	195	–	–
Alfonso et al.	2024	0.50	0.08	–	29	0.143	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	166⁽¹⁾	–	–
Cavallo et al.	2024	0.50	0.47	–	13	0.030	–	–	–
Hunt & Reffert	2023	0.47	0.10	0.52	30	–	–	–	–
Almeida et al.	2023	0.46	0.20	–	53	-0.001	228⁽¹⁾	0.52	–
Qin et al.	2023	0.52	0.22	–	28	–	–	–	–
Just et al.	2023	–	–	–	263	–	14	–	–
He et al.	2022	–	0.40	–	32	–	–	–	–
Jaehnig et al.	2021	0.49⁽¹⁾	–	–	–	–	–	–	–
Rain et al.	2021	0.48	0.12	–	26	–	–	–	0
Dias et al.	2021	0.48	0.20	–	46	0.143	–	–	–
Cantat-Gaudin et al.	2020	0.50	0.08	–	30	–	–	–	–
Cantat-Gaudin & Anders	2020	0.48	–	–	–	–	–	–	–
Liu & Pang	2019	–	–	–	29	0.250	–	–	–
Bossini et al.	2019	0.47	0.13	–	27	0.010	–	–	–
Soubiran et al.	2018	0.48	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	0.48	–	–	–	–	–	–	–
Loktin & Popova	2017	0.79	0.38	–	121	–	–	–	–
Kharchenko et al.	2016	0.57	0.09	–	263	–	–	–	–
Kharchenko et al.	2013	0.57	0.09	–	263	–	–	–	–
Gozha et al.	2012	0.54	–	–	86	–	7	–	–
Piskunov et al.	2008	0.50	0.09	–	269	–	–	–	–
van den Bergh	2006	0.54	0.09	–	85	–	–	–	–
Kharchenko et al.	2005	0.50	0.09	–	269	–	–	–	–
Kharchenko et al.	2003	0.54	0.09	–	–	–	–	–	–
Dias et al.	2002	0.54	0.09	–	86	0.030	–	–	–

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

Visualization

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