NGC 366

(MWSC 102)

0.95 UTI

0.77

C_N

1.0

C_dens

1.0

C_C3

1.0

C_lit

1.0

C_dup

C3 classification AA

Number of members (P>50%) 163

Radius (P>50% members) 1.8 [arcmin]

C_N 0.77 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 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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NGC 366 is a rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high extinction. It is catalogued as a massive, near-solar metallicity, young cluster, but with a large variance across recent sources for the distance, age, metallicity, and mass parameters (see Parameters). It is very well-studied in the literature.

Relatively close High extinction Massive Near-solar metallicity Young

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 NGC 366 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	–	16.621	62.217	0.368	-2.078	-0.498	-20.329
Li et al.	2025	16.624	62.219	0.355	-2.071	-0.425	–
Almeida et al.	2025	16.619	62.218	–	–	–	–
Hunt & Reffert	2024	16.628	62.218	0.368	-2.086	-0.514	-25.584
Celli et al.	2024	16.624	62.219	–	–	–	–
Cavallo et al.	2024	16.614	62.212	0.369	–	–	–
Hunt & Reffert	2023	16.628	62.218	0.368	-2.086	-0.514	-25.584
Just et al.	2023	16.625	62.22	–	–	–	–
Jaehnig et al.	2021	16.62	62.218	0.391	-2.067	-0.414	–
Rain et al.	2021	16.624	62.219	0.355	-2.071	-0.425	–
Dias et al.	2021	16.619	62.218	0.342	-2.086	-0.431	–
Cantat-Gaudin et al.	2020	16.624	62.219	0.355	-2.071	-0.425	–
Sánchez et al.	2020	16.608	62.23	–	-2.182	-0.478	–
Cantat-Gaudin & Anders	2020	16.624	62.219	0.355	-2.071	-0.425	–
Dias et al.	2019	16.608	62.23	0.328	-2.06	-0.414	83.14
Soubiran et al.	2018	16.624	62.219	–	–	–	83.14
Cantat-Gaudin et al.	2018	16.624	62.219	0.355	-2.071	-0.425	–
Loktin & Popova	2017	16.605	62.23	–	-0.342	-2.376	–
Kharchenko et al.	2016	16.625	62.22	–	–	–	–
Dias et al.	2014	16.608	62.23	–	-5.33	4.08	–
Kharchenko et al.	2013	16.635	62.224	–	-0.48	-2.08	–
Gozha et al.	2012	16.608	62.23	–	–	–	–
Kharchenko et al.	2012	16.635	62.224	–	-0.54	-2.0	–
van den Bergh	2006	16.625	62.233	–	–	–	–
Dias et al.	2002	16.608	62.23	–	-5.34	4.1	–

💡 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]	Bfr	BSS
Li et al.	2025	0.96	1.30	–	3978	0.067	–	–	–
Almeida et al.	2025	2.61	3.25	–	14	–	984	–	–
Hunt & Reffert	2024	–	–	–	–	–	1635*	–	–
Celli et al.	2024	–	–	–	26	–	1024	–	–
Cavallo et al.	2024	3.47	3.34	–	42	0.890	–	–	–
Hunt & Reffert	2023	2.56	3.38	2.66	23	–	–	–	–
Just et al.	2023	–	–	–	79	–	87	–	–
Jaehnig et al.	2021	2.55*	–	–	–	–	–	–	–
Rain et al.	2021	2.60	3.88	–	26	–	–	–	0
Dias et al.	2021	2.61	3.25	–	14	-0.030	–	–	–
Cantat-Gaudin et al.	2020	2.68	3.10	–	26	–	–	–	–
Cantat-Gaudin & Anders	2020	2.60	–	–	–	–	–	–	–
Dias et al.	2019	2.67	2.91	–	20	-1.623	–	–	–
Soubiran et al.	2018	2.60	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	2.60	–	–	–	–	–	–	–
Loktin & Popova	2017	1.77	3.85	–	27	–	–	–	–
Kharchenko et al.	2016	2.20	3.10	–	79	–	–	–	–
Kharchenko et al.	2013	2.20	3.10	–	79	–	–	–	–
Gozha et al.	2012	1.78	–	–	26	-0.550	–	–	–
Kharchenko et al.	2012	2.20	3.10	–	79	–	–	–	–
van den Bergh	2006	1.78	3.91	–	26	–	–	–	–
Dias et al.	2002	1.78	3.89	–	26	–	–	–	–

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

Visualization

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