Collinder 450

(NGC 7261; MWSC 3617; OCL 237; FSR 0363)

0.96 UTI

0.78

C_N

1.0

C_dens

1.0

C_C3

1.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 168

Stellar density (N₅₀/rad) 24.1 [N/pc²]

C3 classification AA

C_N 0.78 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 450 is a 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, young 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.

(*): The parallax distance estimate (~3.63 kpc) differs significantly from the median photometric distance (~2.77 kpc).

Note: This object shares a moderate percentage of members with a later reported entry. See table with shared members information.

Relatively close Moderate extinction Massive Near-solar metallicity Young

Almeida et al. (2025)
Mass determination: intermediate fit. Isochrone match: intermediate fit.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Collinder 450 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–	335.064	58.128	0.275	-3.882	-2.941	-88.994
Li et al.	2025	335.056	58.128	0.278	-3.932	-2.909	–
Almeida et al.	2025	335.065	58.118	–	–	–	–
Hunt & Reffert	2024	335.049	58.126	0.281	-3.877	-2.95	-142.736
Celli et al.	2024	335.056	58.128	–	–	–	–
Cavallo et al.	2024	335.067	58.13	0.281	–	–	–
Hunt & Reffert	2023	335.049	58.126	0.281	-3.877	-2.95	-142.736
Just et al.	2023	335.112	58.109	–	–	–	–
Jaehnig et al.	2021	335.071	58.126	0.305	-3.877	-2.851	–
Rain et al.	2021	335.056	58.128	0.278	-3.932	-2.909	–
Dias et al.	2021	335.065	58.118	0.275	-3.934	-2.915	–
Cantat-Gaudin et al.	2020	335.056	58.128	0.278	-3.932	-2.909	–
Sánchez et al.	2020	335.029	58.128	–	-3.998	-2.745	–
Cantat-Gaudin & Anders	2020	335.056	58.128	0.278	-3.932	-2.909	–
Soubiran et al.	2018	335.056	58.128	–	–	–	-71.34
Bica et al.	2019	335.035	58.117	–	–	–	–
Cantat-Gaudin et al.	2018	335.056	58.128	0.278	-3.932	-2.909	–
Loktin & Popova	2017	335.025	58.127	–	-1.583	-2.433	–
Kharchenko et al.	2016	335.112	58.109	–	–	–	–
Dias et al.	2014	335.029	58.128	–	-2.65	-3.37	–
Kharchenko et al.	2013	335.118	58.113	–	-4.46	-7.53	–
Kharchenko et al.	2012	335.118	58.113	–	-4.36	-7.54	–
van den Bergh	2006	335.1	58.083	–	–	–	–
Dias et al.	2002	335.029	58.128	–	-2.65	-3.37	–
Dambis	1999	335.029	58.128	–	–	–	–

💡 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–	2.765	2.825	0.96	45	0.010	1060	–	0.0
Li et al.	2025	1.45	1.52	–	1767	-0.040	–	–	–
Almeida et al.	2025	2.39	2.73	–	43	–	701	–	–
Hunt & Reffert	2024	–	–	–	–	–	1413⁽¹⁾	–	–
Celli et al.	2024	–	–	–	11	–	707	–	–
Cavallo et al.	2024	3.78	2.99	–	79	0.600	–	–	–
Hunt & Reffert	2023	3.27	3.00	0.96	47	–	–	–	–
Just et al.	2023	–	–	–	32	–	1702	–	–
Jaehnig et al.	2021	3.27⁽¹⁾	–	–	–	–	–	–	–
Rain et al.	2021	3.26	2.73	–	158	–	–	–	0
Dias et al.	2021	2.39	2.73	–	43	0.010	–	–	–
Cantat-Gaudin et al.	2020	3.47	2.81	–	11	–	–	–	–
Cantat-Gaudin & Anders	2020	3.26	–	–	–	–	–	–	–
Soubiran et al.	2018	3.26	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	3.26	–	–	–	–	–	–	–
Loktin & Popova	2017	1.72	2.93	–	50	–	–	–	–
Kharchenko et al.	2016	2.69	2.84	–	32	–	–	–	–
Kharchenko et al.	2013	2.69	2.84	–	32	–	–	–	–
Kharchenko et al.	2012	2.70	2.79	–	251	–	–	–	–
van den Bergh	2006	1.68	3.01	–	47	–	–	–	–
Dias et al.	2002	2.83	2.73	–	158	–	–	–	–
Dambis	1999	1.50	3.26	–	20	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
OC 0177	26.2	335.05	58.13	0.3	-3.88	-2.95	-216.07	0.0

💡 Note: The % column shows the percentage of members that Collinder 450 shares with each listed object.

Visualization

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