Collinder 271

(MWSC 2126; OCL 900; ESO 096 14)

0.88 UTI

0.4

C_N

1.0

C_dens

1.0

C_C3

1.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 40

Stellar density (N₅₀/rad) 7.5 [N/pc²]

C3 classification AA

C_N 0.4 Poorly populated
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 271 is a poorly populated, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate extinction. It is catalogued as a 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.

Relatively close Moderate extinction Near-solar metallicity Young

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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Collinder 271 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–	202.456	-64.203	0.365	-5.721	-1.56	–
Li et al.	2025	202.453	-64.199	0.353	-5.697	-1.579	–
Almeida et al.	2025	202.455	-64.202	–	–	–	–
Hunt & Reffert	2024	202.473	-64.203	0.35	-5.753	-1.561	-3.104
Cavallo et al.	2024	202.462	-64.204	0.351	–	–	–
Hunt & Reffert	2023	202.473	-64.203	0.35	-5.753	-1.561	-3.104
Just et al.	2023	202.519	-64.197	–	–	–	–
Dias et al.	2021	202.455	-64.202	0.357	-5.679	-1.557	–
Cantat-Gaudin et al.	2020	202.453	-64.199	0.353	-5.697	-1.579	–
Cantat-Gaudin & Anders	2020	202.453	-64.199	0.353	-5.697	-1.579	–
Soubiran et al.	2018	202.453	-64.199	–	–	–	-32.71
Bica et al.	2019	202.469	-64.2	–	–	–	–
Cantat-Gaudin et al.	2018	202.453	-64.199	0.353	-5.697	-1.579	–
Loktin & Popova	2017	202.53	-64.2	–	-9.95	-4.489	–
Kharchenko et al.	2016	202.519	-64.197	–	–	–	–
Dias et al.	2014	202.475	-64.2	–	-4.27	-2.83	–
Kharchenko et al.	2013	202.53	-64.2	–	-7.73	-12.8	–
van den Bergh	2006	202.5	-64.183	–	–	–	–
Dias et al.	2002	202.475	-64.2	–	-4.29	-2.83	–

💡 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–	2.445	1.23	1.19	87	0.136	591	–	–
Li et al.	2025	2.32	1.21	–	167	0.136	–	–	–
Almeida et al.	2025	2.38	1.35	–	87	–	280	–	–
Hunt & Reffert	2024	–	–	–	–	–	591⁽¹⁾	–	–
Cavallo et al.	2024	1.80	1.39	–	295	-0.600	–	–	–
Hunt & Reffert	2023	2.51	1.21	1.19	64	–	–	–	–
Just et al.	2023	–	–	–	16	–	673	–	–
Dias et al.	2021	2.38	1.35	–	87	0.168	–	–	–
Cantat-Gaudin et al.	2020	2.62	1.23	–	62	–	–	–	–
Cantat-Gaudin & Anders	2020	2.62	–	–	–	–	–	–	–
Soubiran et al.	2018	2.62	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	2.62	–	–	–	–	–	–	–
Loktin & Popova	2017	1.18	0.94	–	205	–	–	–	–
Kharchenko et al.	2016	2.59	4.19	–	16	–	–	–	–
Kharchenko et al.	2013	2.59	4.19	–	16	–	–	–	–
van den Bergh	2006	1.17	0.90	–	209	–	–	–	–
Dias et al.	2002	1.17	0.89	–	210	–	–	–	–

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

Visualization

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