FSR 0219

(MWSC 3290)

0.72 UTI

0.76

C_N

1.0

C_dens

0.75

C_C3

0.55

C_lit

1.0

C_dup

N₅₀ (P>50% members) 140

Stellar density (N₅₀/rad) 13.2 [N/pc²]

C3 classification AB

C_N 0.76 Rich
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.55 Moderately studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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FSR 0219 is a rich, very dense object of high C3 quality. Its parallax locates it at a relatively close^* distance, above the mid-plane, affected by moderate extinction. It is catalogued as a metal-rich, very young cluster, but with a large variance across recent sources for the mass parameter (see Parameters). It is moderately studied in the literature.

(*): The parallax distance estimate (~1.81 kpc) differs significantly from the median photometric distance (~1.24 kpc).

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

Relatively close Moderate extinction Metal-rich Very young

Liu et al. (2025)
Classified as primordial binary cluster 139 along with UBC_584.

Palma et al. (2025)
Part of multiple system G256, along with vdBergh_130, Theia_286, UBC_375, NGC_6910 and UBC_584.

Cavallo et al. (2024)
Silver sample.

Data

🔍 Search references for FSR 0219 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–	303.731	41.193	0.553	-3.927	-4.555	-46.623
Hunt & Reffert	2024	303.742	41.19	0.558	-3.93	-4.609	-60.102
Cavallo et al.	2024	303.732	41.193	0.557	–	–	–
Hunt & Reffert	2023	303.742	41.19	0.558	-3.93	-4.609	-60.102
Just et al.	2023	303.76	41.182	–	–	–	–
Kharchenko et al.	2016	303.76	41.182	–	–	–	–
Dias et al.	2014	303.75	41.179	–	-3.08	-4.81	–
Kharchenko et al.	2013	303.765	41.185	–	-2.85	-3.97	–
Froebrich et al.	2007	303.75	41.179	–	–	–	–
Dias et al.	2002	303.75	41.179	–	-2.85	-3.97	–

💡 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–	1.24	2.58	2.41	3	0.670	133	–	–
Liu et al.	2025	4.45	1.05	–	8	–	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	253⁽¹⁾	–	–
Cavallo et al.	2024	1.60	2.59	–	13	0.670	–	–	–
Hunt & Reffert	2023	1.76	3.26	2.41	4	–	–	–	–
Just et al.	2023	–	–	–	3	–	13	–	–
Kharchenko et al.	2016	0.88	2.58	–	3	–	–	–	–
Kharchenko et al.	2013	0.88	2.58	–	3	–	–	–	–
Dias et al.	2002	0.88	2.58	–	3	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
OC 0118	52.9	303.68	41.22	0.55	-3.96	-4.54	-63.79	0.0

💡 Note: The % column shows the percentage of members that FSR 0219 shares with each listed object.

Visualization

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