Collinder 338

(MWSC 2651; OCL 1013; ESO 334 03)

0.88 UTI

0.64

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%) 78

Radius (P>50% members) 13.9 [arcmin]

C_N 0.64 Moderately populated
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 338 is a moderately populated, very dense object of high C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is very well-studied in the literature.

Close Low 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 338 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	–	264.479	-37.657	1.517	2.485	-1.946	-26.321
Li et al.	2025	264.483	-37.657	1.521	2.546	-1.854	–
Almeida et al.	2025	264.476	-37.666	–	–	–	–
Alfonso et al.	2024	264.67	-37.442	1.463	2.508	-1.864	–
Hunt & Reffert	2024	264.58	-37.634	1.489	2.551	-1.826	-23.741
Cavallo et al.	2024	264.562	-37.44	1.498	–	–	–
Hunt & Reffert	2023	264.58	-37.634	1.489	2.551	-1.826	-23.741
Almeida et al.	2023	264.495	-37.659	–	–	–	–
Just et al.	2023	264.541	-37.7	–	–	–	–
Tarricq et al.	2022	264.485	-37.686	1.493	2.487	-1.961	–
Dias et al.	2021	264.476	-37.666	1.522	2.55	-1.863	-24.45
Cantat-Gaudin et al.	2020	264.483	-37.657	1.521	2.546	-1.854	–
Cantat-Gaudin & Anders	2020	264.483	-37.657	1.521	2.546	-1.854	–
Bossini et al.	2019	264.483	-37.657	–	–	–	–
Soubiran et al.	2018	264.483	-37.657	–	–	–	-23.35
Bica et al.	2019	264.57	-37.724	–	–	–	–
Cantat-Gaudin et al.	2018	264.483	-37.657	1.521	2.546	-1.854	–
Kharchenko et al.	2016	264.541	-37.7	–	–	–	–
Dias et al.	2014	264.587	-37.717	–	-1.68	-1.89	–
Kharchenko et al.	2013	264.55	-37.7	–	1.24	-2.87	–
Piskunov et al.	2008	264.514	-37.72	–	–	–	–
Piskunov et al.	2007	264.514	-37.72	–	–	–	–
Kharchenko et al.	2005	264.52	-37.72	–	2.89	-3.97	–
Kharchenko et al.	2003	264.49	-37.67	–	3.46	-2.5	–
Dias et al.	2002	264.587	-37.717	–	-1.74	-2.06	–

💡 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	0.60	0.64	–	161	-0.047	–	–	–
Almeida et al.	2025	0.65	0.71	–	153	–	150	–	–
Alfonso et al.	2024	0.64	0.45	–	135	0.069	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	222*	–	–
Cavallo et al.	2024	0.63	0.69	–	490	-0.160	–	–	–
Hunt & Reffert	2023	0.63	0.52	1.09	115	–	–	–	–
Almeida et al.	2023	0.64	0.71	–	200	0.066	144*	0.44	–
Just et al.	2023	–	–	–	112	–	52	–	–
Tarricq et al.	2022	0.63	–	–	155	–	–	–	–
Dias et al.	2021	0.65	0.71	–	153	0.069	–	–	–
Cantat-Gaudin et al.	2020	0.64	0.45	–	145	–	–	–	–
Cantat-Gaudin & Anders	2020	0.65	–	–	–	–	–	–	–
Bossini et al.	2019	0.67	0.66	–	236	0.000	–	–	–
Soubiran et al.	2018	0.65	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	0.65	–	–	–	–	–	–	–
Kharchenko et al.	2016	0.70	0.78	–	112	–	–	–	–
Kharchenko et al.	2013	0.70	0.78	–	112	–	–	–	–
Piskunov et al.	2008	0.88	0.78	–	447	–	395*	–	–
Piskunov et al.	2007	0.88	0.78	–	447	–	104	–	–
Kharchenko et al.	2005	0.88	0.78	–	447	–	–	–	–
Kharchenko et al.	2003	0.50	0.31	–	–	–	–	–	–
Dias et al.	2002	0.88	0.78	–	447	–	–	–	–

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

Visualization

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