FSR 0366

(MWSC 3610)

0.17 UTI

0.0

C_N

0.04

C_dens

0.5

C_C3

0.16

C_lit

1.0

C_dup

N_m (P>50%) 22

Core radius and density 2.1 [pc], 0.2 [pc^-2]

C3 classification BB

C_N 0.0 Sparse
C_dens 0.04 Very loose
C_C3 0.5 Intermediate quality
C_lit 0.16 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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FSR 0366 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by high extinction. It is catalogued as a massive, metal-rich, young cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is rarely studied in the literature.

Note: This object shares a large percentage of members with a later reported entry. See table with shared members information.

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Distant High extinction Massive Metal-rich Young

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.39 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.39 (50th percentile).

Data

🔍 Search references for FSR 0366 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–	334.556	59.059	0.249	-3.427	-2.442	–
Hunt & Reffert	2024	334.549	59.118	0.246	-3.433	-2.447	–
Cavallo et al.	2024	334.629	59.096	0.246	–	–	–
Hunt & Reffert	2023	334.549	59.118	0.246	-3.433	-2.447	–
Bica et al.	2019	334.66	59.017	–	–	–	–
Sampedro et al.	2017	334.663	59.014	–	-2.73	-2.59	–
Froebrich et al.	2007	334.663	59.014	–	–	–	–
Dias et al.	2002	334.663	59.014	–	-1.82	-1.33	–

💡 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–	3.82	3.35	2.57	26	0.510	1459	–	–
Hunt & Reffert	2024	3.82	3.35	2.57	6	–	1459⁽¹⁾	–	–
Cavallo et al.	2024	3.30	3.10	–	47	0.510	–	–	–
Hunt & Reffert	2023	3.82	3.35	2.57	6	–	–	–	–
Dias et al.	2002	5.61	3.48	–	519	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWNU 3379	100.0	334.59	59.09	0.25	-3.44	-2.45	-74.47	0.29

💡 Note: The % column shows the percentage of members that FSR 0366 shares with each listed object.

Visualization

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