Collinder 115

(MWSC 981; OCL 535; FSR 1059; FoF 190)

0.92 UTI

0.83

C_N

1.0

C_dens

0.75

C_C3

1.0

C_lit

1.0

C_dup

C3 classification AB

Number of members (P>50%) 321

Radius (P>50% members) 4.5 [arcmin]

C_N 0.83 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 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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Collinder 115 is a rich, very dense object of high C3 quality. Its parallax locates it at a moderate distance, near 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, 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 115 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	–	101.663	1.777	0.485	-1.284	-0.572	37.708
Li et al.	2025	101.659	1.776	0.475	-1.245	-0.567	–
Wei et al.	2025	101.664	1.776	0.471	-1.184	-0.483	–
Almeida et al.	2025	101.654	1.771	–	–	–	–
Zhang et al.	2024	101.66	1.783	–	–	–	–
Hunt & Reffert	2024	101.66	1.783	0.489	-1.287	-0.571	–
Cavallo et al.	2024	101.641	1.852	0.488	–	–	–
Hunt & Reffert	2023	101.66	1.783	0.489	-1.287	-0.571	–
Almeida et al.	2023	101.664	1.772	–	–	–	–
Just et al.	2023	101.641	1.799	–	–	–	–
Dias et al.	2021	101.654	1.771	0.478	-1.252	-0.553	–
Cantat-Gaudin et al.	2020	101.659	1.776	0.475	-1.245	-0.567	–
Sánchez et al.	2020	101.625	1.767	–	-1.097	-0.643	–
Cantat-Gaudin & Anders	2020	101.659	1.776	0.475	-1.245	-0.567	–
Liu & Pang	2019	101.672	1.78	0.49	-1.16	-0.524	–
Soubiran et al.	2018	101.659	1.776	–	–	–	50.95
Bica et al.	2019	101.678	1.779	–	–	–	–
Cantat-Gaudin et al.	2018	101.659	1.776	0.475	-1.245	-0.567	–
Loktin & Popova	2017	101.64	1.797	–	-0.56	-0.953	–
Kharchenko et al.	2016	101.641	1.799	–	–	–	–
Dias et al.	2014	101.625	1.767	–	-1.0	-1.5	–
Kharchenko et al.	2013	101.647	1.797	–	-0.2	-3.05	–
Dias et al.	2002	101.625	1.767	–	-1.0	-1.5	–

💡 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]	Bfr	BSS
Li et al.	2025	2.19	0.91	–	181	0.247	–	–	–
Wei et al.	2025	3.32	1.16	–	501	0.500	4710	0.41	–
Almeida et al.	2025	1.87	1.28	–	74	–	899	–	–
Zhang et al.	2024	–	–	–	–	-0.215*	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	1205*	–	–
Cavallo et al.	2024	1.87	0.99	–	170	0.070	–	–	–
Hunt & Reffert	2023	1.88	0.82	1.15	163	–	–	–	–
Almeida et al.	2023	1.85	1.15	–	141	-0.088	824*	0.59	–
Just et al.	2023	–	–	–	52	–	175	–	–
Dias et al.	2021	1.87	1.28	–	74	-0.104	–	–	–
Cantat-Gaudin et al.	2020	1.96	0.76	–	95	–	–	–	–
Cantat-Gaudin & Anders	2020	1.99	–	–	–	–	–	–	–
Liu & Pang	2019	–	–	–	107	0.250	–	–	–
Soubiran et al.	2018	1.99	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	1.99	–	–	–	–	–	–	–
Loktin & Popova	2017	2.78	0.69	–	355	–	–	–	–
Kharchenko et al.	2016	2.27	1.62	–	52	–	–	–	–
Kharchenko et al.	2013	2.27	1.62	–	52	–	–	–	–
Dias et al.	2002	1.92	0.71	–	355	–	–	–	–

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Visualization

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