Collinder 79

(NGC 2141; MWSC 710; OCL 487; FSR 0971; FoF 28)

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) 1357

Stellar density (N₅₀/rad) 48.8 [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 79 is a very rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by low extinction. It is catalogued as a very 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.

Distant Low extinction Very massive Near-solar metallicity Old Contains BSS

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

Cavallo et al. (2024)
Gold sample.

Rain et al. (2024)
The cluster contains many BSS candidates, some possibly misidentified near the turnoff. The majority, however, are well reproduced by binary evolution models, including the single YSS.

Data

🔍 Search references for Collinder 79 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–	90.739	10.456	0.204	-0.074	-0.757	25.128
Li et al.	2025	90.734	10.451	0.196	-0.028	-0.767	–
Hu & Soubiran	2025	90.738	10.454	–	–	–	–
Carrasco-Varela et al.	2025	90.965	10.422	–	–	–	–
Almeida et al.	2025	90.731	10.444	–	–	–	–
Zhang et al.	2024	90.744	10.456	–	–	–	–
Hunt & Reffert	2024	90.744	10.456	0.203	-0.083	-0.755	26.135
Cavallo et al.	2024	90.738	10.454	0.204	–	–	–
Rain et al.	2024	90.741	10.455	0.21	-0.076	-0.755	–
Hunt & Reffert	2023	90.744	10.456	0.203	-0.083	-0.755	26.135
Just et al.	2023	90.719	10.461	–	–	–	–
Jaehnig et al.	2021	90.74	10.457	0.215	-0.049	-0.764	–
Rain et al.	2021	90.734	10.451	0.196	-0.028	-0.767	–
Dias et al.	2021	90.731	10.444	0.198	-0.031	-0.773	39.714
Cantat-Gaudin et al.	2020	90.734	10.451	0.196	-0.028	-0.767	–
Cantat-Gaudin & Anders	2020	90.734	10.451	0.196	-0.028	-0.767	–
Liu & Pang	2019	90.739	10.45	0.282	-0.015	-0.697	–
Soubiran et al.	2018	90.734	10.451	–	–	–	26.96
Bica et al.	2019	90.751	10.429	–	–	–	–
Cantat-Gaudin et al.	2018	90.734	10.451	0.196	-0.028	-0.767	–
Loktin & Popova	2017	90.735	10.448	–	0.105	-0.535	43.2
Kharchenko et al.	2016	90.719	10.461	–	–	–	–
Dias et al.	2014	90.729	10.447	–	0.03	-4.82	–
Kharchenko et al.	2013	90.727	10.46	–	-0.85	-0.78	43.2
Gozha et al.	2012	90.729	10.447	–	–	–	–
Kharchenko et al.	2007	90.73	10.45	–	0.08	–	–
van den Bergh	2006	90.775	10.433	–	–	–	–
Chen et al.	2003	90.756	10.41	–	1.38	-1.78	43.0
Dias et al.	2002	90.729	10.447	–	0.03	-4.82	24.1

💡 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–	4.22	0.95	0.33	1795	-0.180	8024	0.36	0.12
Li et al.	2025	4.30	1.34	–	2353	-0.447	–	–	–
Hu & Soubiran	2025	–	–	–	–	-0.230⁽⁵⁾	–	–	–
Carrasco-Varela et al.	2025	4.21	0.99	–	2291	0.270	–	–	0.12⁽¹⁾
Almeida et al.	2025	4.21	0.83	–	2897	–	5627	–	–
Zhang et al.	2024	–	–	–	–	0.062⁽¹⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	10420⁽¹⁾	–	–
Cavallo et al.	2024	3.39	1.06	–	3020	0.010	–	–	–
Rain et al.	2024	4.08	1.10	–	2614	–	26251	0.36	–
Hunt & Reffert	2023	4.23	0.95	0.33	1832	–	–	–	–
Just et al.	2023	–	–	–	1758	–	2173	–	–
Jaehnig et al.	2021	4.57⁽¹⁾	–	–	–	–	–	–	–
Rain et al.	2021	4.44	0.78	–	1698	–	–	–	18
Dias et al.	2021	4.21	0.83	–	2897	0.300	–	–	–
Cantat-Gaudin et al.	2020	5.18	0.97	–	1862	–	–	–	–
Cantat-Gaudin & Anders	2020	4.44	–	–	–	–	–	–	–
Liu & Pang	2019	–	–	–	2630	0.500	–	–	–
Soubiran et al.	2018	4.44	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	4.44	–	–	–	–	–	–	–
Loktin & Popova	2017	3.61	0.94	–	1265	–	–	–	–
Kharchenko et al.	2016	4.36	0.97	–	1758	–	–	–	–
Kharchenko et al.	2013	4.36	0.97	–	1758	-0.180	–	–	–
Gozha et al.	2012	4.03	–	–	1702	-0.180	–	–	–
van den Bergh	2006	4.03	0.78	–	1698	–	–	–	–
Chen et al.	2003	4.03	0.78	–	1700	-0.260⁽¹⁾	–	–	–
Dias et al.	2002	4.03	0.78	–	1702	-0.180	–	–	–

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

Visualization

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