Collinder 64

(NGC 1883; FSR 0729; MWSC 539; OCL 417)

0.91 UTI

0.81

C_N

1.0

C_dens

0.75

C_C3

1.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 256

Stellar density (N₅₀/rad) 12.4 [N/pc²]

C3 classification AB

C_N 0.81 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

MOCA 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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Collinder 64 is a rich, very dense object of high C3 quality. Its parallax locates it at a large distance, well above the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the mass parameter (see Parameters). It is very well-studied in the literature.

Distant Moderate extinction Massive Near-solar metallicity Intermediate age

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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Collinder 64 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–	81.478	46.495	0.192	0.421	-1.165	-26.37
Li et al.	2025	81.48	46.493	0.201	0.496	-1.128	–
Hu & Soubiran	2025	81.486	46.502	–	–	–	–
Almeida et al.	2025	81.48	46.49	–	–	–	–
Zhang et al.	2024	81.476	46.489	–	–	–	–
Hunt & Reffert	2024	81.476	46.489	0.195	0.407	-1.17	-19.947
Cavallo et al.	2024	81.486	46.502	0.194	–	–	–
Hunt & Reffert	2023	81.476	46.489	0.195	0.407	-1.17	-19.947
Almeida et al.	2023	81.48	46.492	–	–	–	–
Just et al.	2023	81.459	46.491	–	–	–	–
Dias et al.	2021	81.48	46.49	0.192	0.481	-1.123	-27.166
Cantat-Gaudin et al.	2020	81.48	46.493	0.201	0.496	-1.128	–
Cantat-Gaudin & Anders	2020	81.48	46.493	0.201	0.496	-1.128	–
Soubiran et al.	2018	81.48	46.493	–	–	–	-26.92
Bica et al.	2019	81.474	46.493	–	–	–	–
Cantat-Gaudin et al.	2018	81.48	46.493	0.201	0.496	-1.128	–
Loktin & Popova	2017	81.48	46.491	–	-0.684	-0.922	-30.8
Kharchenko et al.	2016	81.459	46.491	–	–	–	–
Dias et al.	2014	81.475	46.49	–	1.02	-3.09	–
Kharchenko et al.	2013	81.469	46.49	–	-1.65	-1.84	-30.8
Gozha et al.	2012	81.475	46.49	–	–	–	–
Kharchenko et al.	2012	81.469	46.49	–	-1.62	-1.23	-30.8
Froebrich et al.	2007	81.479	46.496	–	–	–	–
Dias et al.	2002	81.475	46.49	–	1.02	-3.09	-30.8

💡 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–	4.365	1.745	1.25	458	-0.200	1291	0.7	–
Li et al.	2025	4.12	1.70	–	462	-0.138	–	–	–
Hu & Soubiran	2025	–	–	–	–	-0.210⁽⁵⁾	–	–	–
Almeida et al.	2025	3.69	1.78	–	455	–	818	–	–
Zhang et al.	2024	–	–	–	–	-0.230⁽¹⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	1764⁽¹⁾	–	–
Cavallo et al.	2024	3.73	1.71	–	661	-0.160	–	–	–
Hunt & Reffert	2023	4.38	1.47	1.25	491	–	–	–	–
Almeida et al.	2023	3.80	1.82	–	424	-0.293	591⁽¹⁾	0.70	–
Just et al.	2023	–	–	–	351	–	3954	–	–
Dias et al.	2021	3.69	1.78	–	455	-0.205	–	–	–
Cantat-Gaudin et al.	2020	4.72	1.18	–	617	–	–	–	–
Cantat-Gaudin & Anders	2020	4.35	–	–	–	–	–	–	–
Soubiran et al.	2018	4.35	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	4.35	–	–	–	–	–	–	–
Loktin & Popova	2017	6.46	0.66	–	891	–	–	–	–
Kharchenko et al.	2016	5.75	1.94	–	351	–	–	–	–
Kharchenko et al.	2013	5.75	1.94	–	351	-0.200	–	–	–
Gozha et al.	2012	4.80	–	–	1000	-0.200	–	–	–
Kharchenko et al.	2012	5.75	1.94	–	351	-0.200	–	–	–
Dias et al.	2002	4.80	1.08	–	1000	-0.200	–	–	–

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

Visualization

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