Collinder 442

(NGC 7142; MWSC 3557; OCL 241; FSR 0373; FoF 629)

0.98 UTI

0.9

C_N

1.0

C_dens

1.0

C_C3

1.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 498

Stellar density (N₅₀/rad) 42.3 [N/pc²]

C3 classification AA

C_N 0.9 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 442 is a very rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, old 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.

Note: This object contains blue stragglers according to at least one source.

Relatively close Moderate extinction Massive Near-solar metallicity Old Contains BSS

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 442 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–	326.296	65.784	0.407	-2.683	-1.341	-50.025
Li et al.	2025	326.29	65.782	0.392	-2.747	-1.288	–
Hu & Soubiran	2025	326.282	65.79	–	–	–	–
Wei et al.	2025	326.28	65.781	0.409	-2.679	-1.353	–
Carrasco-Varela et al.	2025	326.4	65.824	–	–	–	–
Almeida et al.	2025	326.284	65.781	–	–	–	–
Hunt & Reffert	2024	326.304	65.779	0.41	-2.683	-1.347	-50.348
Cavallo et al.	2024	326.282	65.79	0.41	–	–	–
Hunt & Reffert	2023	326.304	65.779	0.41	-2.683	-1.347	-50.348
Almeida et al.	2023	326.306	65.757	–	–	–	–
Just et al.	2023	326.298	65.788	–	–	–	–
Jaehnig et al.	2021	326.281	65.784	0.423	-2.736	-1.276	–
Rain et al.	2021	326.29	65.782	0.392	-2.747	-1.288	–
Dias et al.	2021	326.284	65.781	0.388	-2.748	-1.277	-49.508
Cantat-Gaudin et al.	2020	326.29	65.782	0.392	-2.747	-1.288	–
Cantat-Gaudin & Anders	2020	326.29	65.782	0.392	-2.747	-1.288	–
Liu & Pang	2019	326.279	65.787	0.383	-2.764	-1.289	–
Soubiran et al.	2018	326.29	65.782	–	–	–	-49.7
Bica et al.	2019	326.285	65.781	–	–	–	–
Cantat-Gaudin et al.	2018	326.29	65.782	0.392	-2.747	-1.288	–
Loktin & Popova	2017	326.295	65.775	–	-0.464	0.406	-44.1
Kharchenko et al.	2016	326.298	65.788	–	–	–	–
Dias et al.	2014	326.288	65.775	–	-2.37	-1.7	–
Kharchenko et al.	2013	326.302	65.792	–	-1.98	0.79	-44.1
Gozha et al.	2012	326.287	65.775	–	–	–	–
Kharchenko et al.	2012	326.302	65.792	–	-2.01	0.78	-44.12
Kharchenko et al.	2007	326.29	65.78	–	0.1	–	–
van den Bergh	2006	326.288	65.775	–	–	–	–
Chen et al.	2003	326.283	65.767	–	–	–	–
Dias et al.	2002	326.288	65.775	–	-2.37	-1.7	-44.12

💡 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–	2.2	1.29	0.73	2515	0.080	2548	0.515	0.18
Li et al.	2025	2.22	1.13	–	3810	0.158	–	–	–
Hu & Soubiran	2025	–	–	–	–	-0.040⁽⁵⁾	–	–	–
Wei et al.	2025	2.96	1.14	–	2460	0.500	2659	0.31	–
Carrasco-Varela et al.	2025	2.04	1.29	–	3573	-0.100	–	–	0.18⁽¹⁾
Almeida et al.	2025	2.04	1.29	–	3573	–	2077	–	–
Hunt & Reffert	2024	–	–	–	–	–	2548⁽¹⁾	–	–
Cavallo et al.	2024	2.14	1.29	–	2570	0.170	–	–	–
Hunt & Reffert	2023	2.35	1.45	0.73	1452	–	–	–	–
Almeida et al.	2023	2.17	1.43	–	3177	-0.099	3434⁽¹⁾	0.72	–
Just et al.	2023	–	–	–	1778	–	895	–	–
Jaehnig et al.	2021	2.35⁽¹⁾	–	–	–	–	–	–	–
Rain et al.	2021	2.38	1.08	–	3548	–	–	–	10
Dias et al.	2021	2.04	1.29	–	3573	0.080	–	–	–
Cantat-Gaudin et al.	2020	2.41	1.16	–	3090	–	–	–	–
Cantat-Gaudin & Anders	2020	2.38	–	–	–	–	–	–	–
Liu & Pang	2019	–	–	–	3470	0.250	–	–	–
Soubiran et al.	2018	2.38	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	2.38	–	–	–	–	–	–	–
Loktin & Popova	2017	1.78	1.22	–	1854	–	–	–	–
Kharchenko et al.	2016	2.20	1.40	–	1778	–	–	–	–
Kharchenko et al.	2013	2.20	1.40	–	1778	0.080	–	–	–
Gozha et al.	2012	1.69	–	–	1888	0.080	–	–	–
Kharchenko et al.	2012	2.20	1.40	–	1799	0.080	–	–	–
van den Bergh	2006	1.69	1.24	–	1905	–	–	–	–
Chen et al.	2003	1.69	1.23	–	1880	0.040⁽¹⁾	–	–	–
Dias et al.	2002	2.10	1.08	–	3548	0.080	–	–	–

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

Visualization

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