Collinder 16

(NGC 609; MWSC 128; King 3; OCL 325; FSR 0548)

0.95 UTI

1.0

C_N

1.0

C_dens

0.75

C_C3

1.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 760

Stellar density (N₅₀/rad) 64.3 [N/pc²]

C3 classification AB

C_N 1.0 Very 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 16 is a very rich, very dense object of high C3 quality. Its parallax locates it at a large^* distance, above the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, old 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.

(*): The parallax distance estimate (~6.22 kpc) differs significantly from the median photometric distance (~4.52 kpc).

Distant Moderate extinction Massive Near-solar metallicity Old

Almeida et al. (2025)
Mass determination: invalid due to poor quality CMD. Isochrone match: worst fit.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Collinder 16 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–	24.1	64.538	0.161	-0.703	-0.131	-44.797
Li et al.	2025	24.102	64.54	0.144	-0.673	-0.072	–
Almeida et al.	2025	24.095	64.539	–	–	–	–
Hunt & Reffert	2024	24.103	64.537	0.161	-0.705	-0.145	-42.213
Cavallo et al.	2024	24.093	64.538	0.16	–	–	–
Hunt & Reffert	2023	24.103	64.537	0.161	-0.705	-0.145	-42.213
Just et al.	2023	24.083	64.532	–	–	–	–
Dias et al.	2021	24.095	64.539	0.136	-0.66	-0.067	-44.896
Cantat-Gaudin et al.	2020	24.102	64.54	0.144	-0.673	-0.072	–
Cantat-Gaudin & Anders	2020	24.102	64.54	0.144	-0.673	-0.072	–
Soubiran et al.	2018	24.102	64.54	–	–	–	-45.06
Bica et al.	2019	24.092	64.531	–	–	–	–
Cantat-Gaudin et al.	2018	24.102	64.54	0.144	-0.673	-0.072	–
Loktin & Popova	2017	24.09	64.538	–	-0.448	-0.537	–
Kharchenko et al.	2016	24.083	64.532	–	–	–	–
Dias et al.	2014	24.096	64.538	–	0.82	0.1	–
Kharchenko et al.	2013	24.094	64.535	–	-0.45	-1.38	–
Kharchenko et al.	2012	24.094	64.535	–	-0.45	-1.38	–
van den Bergh	2006	24.104	64.537	–	–	–	–
Dias et al.	2002	24.096	64.538	–	0.82	0.1	–

💡 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–	4.52	2.655	1.31	1253	0.130	3104	–	–
Li et al.	2025	4.61	2.98	–	665	0.358	–	–	–
Almeida et al.	2025	4.34	3.13	–	343	–	3104	–	–
Hunt & Reffert	2024	–	–	–	–	–	11914⁽¹⁾	–	–
Cavallo et al.	2024	5.50	3.73	–	123	0.130	–	–	–
Hunt & Reffert	2023	5.57	3.56	1.31	185	–	–	–	–
Just et al.	2023	–	–	–	1413	–	1256	–	–
Dias et al.	2021	4.34	3.13	–	343	-0.077	–	–	–
Cantat-Gaudin et al.	2020	5.01	3.11	–	224	–	–	–	–
Cantat-Gaudin & Anders	2020	5.78	–	–	–	–	–	–	–
Soubiran et al.	2018	5.78	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	5.78	–	–	–	–	–	–	–
Loktin & Popova	2017	4.52	1.42	–	1253	–	–	–	–
Kharchenko et al.	2016	4.50	2.33	–	1413	–	–	–	–
Kharchenko et al.	2013	4.50	2.33	–	1413	–	–	–	–
Kharchenko et al.	2012	4.50	2.33	–	1413	–	–	–	–
van den Bergh	2006	3.98	1.08	–	1698	–	–	–	–
Dias et al.	2002	3.98	1.08	–	1706	–	–	–	–

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

Visualization

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