Collinder 22

(NGC 744; MWSC 153; FSR 0574; FoF 669)

0.91 UTI

0.81

C_N

1.0

C_dens

0.75

C_C3

1.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 261

Stellar density (N₅₀/rad) 31.1 [N/pc²]

C3 classification AB

C_N 0.81 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

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Collinder 22 is a rich, very dense object of high C3 quality. Its parallax locates it at a relatively close distance, below 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 and metallicity 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: good fit. Silver sample.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Collinder 22 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–	29.651	55.471	0.733	-1.865	-1.871	-25.861
Li et al.	2025	29.652	55.473	0.729	-1.864	-1.79	–
Almeida et al.	2025	29.66	55.475	–	–	–	–
Zhang et al.	2024	29.642	55.481	–	–	–	–
Hunt & Reffert	2024	29.642	55.481	0.721	-1.869	-1.883	-27.237
Cavallo et al.	2024	29.638	55.474	0.724	–	–	–
Hunt & Reffert	2023	29.642	55.481	0.721	-1.869	-1.883	-27.237
Almeida et al.	2023	29.655	55.48	–	–	–	–
Just et al.	2023	29.634	55.475	–	–	–	–
Tarricq et al.	2022	29.645	55.459	0.714	-1.837	-1.885	–
Jaehnig et al.	2021	29.663	55.471	0.761	-1.876	-1.737	–
Rain et al.	2021	29.652	55.473	0.729	-1.864	-1.79	–
Dias et al.	2021	29.66	55.475	0.732	-1.885	-1.804	–
Cantat-Gaudin et al.	2020	29.652	55.473	0.729	-1.864	-1.79	–
Sánchez et al.	2020	29.637	55.473	–	-1.735	-1.431	–
Cantat-Gaudin & Anders	2020	29.652	55.473	0.729	-1.864	-1.79	–
Liu & Pang	2019	29.656	55.485	0.729	-1.872	-1.763	–
Soubiran et al.	2018	29.652	55.473	–	–	–	-25.47
Bica et al.	2019	29.669	55.478	–	–	–	–
Cantat-Gaudin et al.	2018	29.652	55.473	0.729	-1.864	-1.79	–
Loktin & Popova	2017	29.64	55.473	–	0.021	-1.35	–
Kharchenko et al.	2016	29.634	55.475	–	–	–	–
Dias et al.	2014	29.637	55.473	–	-2.97	-2.01	–
Kharchenko et al.	2013	29.644	55.478	–	-0.3	-3.92	–
Kharchenko et al.	2012	29.644	55.478	–	-0.81	-4.01	–
Piskunov et al.	2008	29.626	55.464	–	–	–	–
Piskunov et al.	2007	29.626	55.464	–	–	–	–
van den Bergh	2006	29.65	55.467	–	–	–	–
Kharchenko et al.	2005	29.64	55.47	–	-2.85	-3.15	–
Kharchenko et al.	2003	29.65	55.47	–	-1.8	-3.81	–
Dias et al.	2002	29.637	55.473	–	-1.34	1.15	–
Dambis	1999	29.65	55.467	–	–	–	–

💡 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–	1.28	1.18	1.81	237	-0.094	280	0.53	0.0
Li et al.	2025	1.17	0.85	–	646	-0.247	–	–	–
Almeida et al.	2025	1.26	1.12	–	182	–	244	–	–
Zhang et al.	2024	–	–	–	–	-0.142⁽¹⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	832⁽¹⁾	–	–
Cavallo et al.	2024	1.44	1.22	–	257	0.180	–	–	–
Hunt & Reffert	2023	1.30	0.91	1.81	344	–	–	–	–
Almeida et al.	2023	1.26	1.27	–	220	-0.046	315⁽¹⁾	0.53	–
Just et al.	2023	–	–	–	237	–	601	–	–
Tarricq et al.	2022	1.33	–	–	162	–	–	–	–
Jaehnig et al.	2021	1.31⁽¹⁾	–	–	–	–	–	–	–
Rain et al.	2021	1.32	1.18	–	174	–	–	–	0
Dias et al.	2021	1.26	1.12	–	182	0.019	–	–	–
Cantat-Gaudin et al.	2020	1.37	0.84	–	135	–	–	–	–
Cantat-Gaudin & Anders	2020	1.32	–	–	–	–	–	–	–
Liu & Pang	2019	–	–	–	479	-0.500	–	–	–
Soubiran et al.	2018	1.32	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	1.32	–	–	–	–	–	–	–
Loktin & Popova	2017	1.25	1.17	–	176	–	–	–	–
Kharchenko et al.	2016	1.38	1.18	–	237	–	–	–	–
Kharchenko et al.	2013	1.38	1.18	–	237	–	–	–	–
Kharchenko et al.	2012	1.38	1.18	–	237	–	–	–	–
Piskunov et al.	2008	1.21	1.18	–	257	–	56⁽¹⁾	–	–
Piskunov et al.	2007	1.21	1.18	–	257	–	15	–	–
van den Bergh	2006	1.21	1.18	–	178	–	–	–	–
Kharchenko et al.	2005	1.21	1.18	–	257	–	–	–	–
Kharchenko et al.	2003	1.20	1.18	–	–	–	–	–	–
Dias et al.	2002	1.21	1.19	–	177	–	–	–	–
Dambis	1999	1.04	1.55	–	126	–	–	–	–

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

Visualization

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