Collinder 297

(VDBH 183; NGC 6031; MWSC 2352; OCL 951; vdBergh-Hagen 183; ESO 178 09; FoF 2102)

0.95 UTI

0.76

C_N

1.0

C_dens

1.0

C_C3

1.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 114

Stellar density (N₅₀/rad) 58.1 [N/pc²]

C3 classification AA

C_N 0.76 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 297 is a rich, very dense object of very high C3 quality. Its parallax locates it at a relatively close 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: intermediate fit. Isochrone match: good fit.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Collinder 297 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–	241.894	-54.014	0.54	-2.172	-3.049	-48.837
Li et al.	2025	241.907	-54.014	0.534	-2.134	-3.034	–
Almeida et al.	2025	241.897	-54.016	–	–	–	–
Hunt & Reffert	2024	241.896	-54.014	0.544	-2.196	-3.062	-55.663
Cavallo et al.	2024	241.892	-54.013	0.545	–	–	–
Hunt & Reffert	2023	241.896	-54.014	0.544	-2.196	-3.062	-55.663
Almeida et al.	2023	241.899	-54.011	–	–	–	–
Just et al.	2023	241.901	-54.017	–	–	–	–
Jaehnig et al.	2021	241.903	-54.012	0.568	-2.146	-3.057	–
Rain et al.	2021	241.907	-54.014	0.534	-2.134	-3.034	–
Dias et al.	2021	241.897	-54.016	0.545	-2.131	-3.007	–
Cantat-Gaudin et al.	2020	241.907	-54.014	0.534	-2.134	-3.034	–
Sánchez et al.	2020	241.896	-54.015	–	-2.151	-2.924	–
Cantat-Gaudin & Anders	2020	241.907	-54.014	0.534	-2.134	-3.034	–
Liu & Pang	2019	241.89	-54.022	0.547	-2.171	-3.049	–
Bica et al.	2019	241.885	-54.01	–	–	–	–
Cantat-Gaudin et al.	2018	241.907	-54.014	0.534	-2.134	-3.034	–
Loktin & Popova	2017	241.89	-54.016	–	-4.016	-5.328	-2.5
Kharchenko et al.	2016	241.901	-54.017	–	–	–	–
Dias et al.	2014	241.896	-54.015	–	-2.8	-5.95	–
Kharchenko et al.	2013	241.912	-54.018	–	-4.25	-4.1	-2.5
Gozha et al.	2012	241.896	-54.015	–	–	–	–
van den Bergh	2006	241.964	-54.051	–	–	–	–
Dias et al.	2002	241.896	-54.015	–	-2.8	-5.95	-2.48

💡 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–	1.72	1.4	0.78	116	0.064	422	0.61	0.0
Li et al.	2025	1.51	1.24	–	420	-0.163	–	–	–
Almeida et al.	2025	1.66	1.57	–	72	–	316	–	–
Hunt & Reffert	2024	–	–	–	–	–	538⁽¹⁾	–	–
Cavallo et al.	2024	1.43	1.77	–	65	-0.330	–	–	–
Hunt & Reffert	2023	1.72	1.40	0.78	108	–	–	–	–
Almeida et al.	2023	1.71	1.63	–	51	0.137	527⁽¹⁾	0.61	–
Just et al.	2023	–	–	–	157	–	84	–	–
Jaehnig et al.	2021	1.78⁽¹⁾	–	–	–	–	–	–	–
Rain et al.	2021	1.78	1.15	–	115	–	–	–	0
Dias et al.	2021	1.66	1.57	–	72	0.108	–	–	–
Cantat-Gaudin et al.	2020	1.71	1.07	–	89	–	–	–	–
Cantat-Gaudin & Anders	2020	1.78	–	–	–	–	–	–	–
Liu & Pang	2019	–	–	–	29	0.250	–	–	–
Cantat-Gaudin et al.	2018	1.78	–	–	–	–	–	–	–
Loktin & Popova	2017	1.82	1.15	–	118	–	–	–	–
Kharchenko et al.	2016	1.28	1.62	–	157	–	–	–	–
Kharchenko et al.	2013	1.28	1.62	–	157	–	–	–	–
Gozha et al.	2012	1.82	–	–	117	–	–	–	–
van den Bergh	2006	1.82	1.15	–	117	–	–	–	–
Dias et al.	2002	1.82	1.15	–	117	0.020	–	–	–

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

Visualization

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