FSR 0569

(MWSC 207)

0.61 UTI

0.83

C_N

1.0

C_dens

0.75

C_C3

0.29

C_lit

0.96

C_dup

N_m (P>50%) 318

Core radius and density 1.0 [pc], 13 [pc^-2]

C3 classification AB

C_N 0.83 Rich
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.29 Poorly studied
C_dup 0.96 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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FSR 0569 is a rich, very dense object of high C3 quality. Its parallax locates it at a close distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, very young cluster, but with a large variance across recent sources for the absorption and age parameters (see Parameters). It is poorly studied in the literature.

Note: This is a unique object, which shares a very small percentage of members with at least one previously reported entry, and a very small percentage with at least one entry reported in the same catalogue. See table with shared members information.

Relatively close Moderate extinction Near-solar metallicity Very young

Liu et al. (2025)
Classified as primordial binary cluster 144 along with UBC_415, and of multiple system 22 along with CWNU_77, UBC_415 and HSC_1082.

Palma et al. (2025)
Part of multiple system G85, along with HSC_1052, HSC_1082, CWNU_77 and UBC_415.

Cavallo et al. (2024)
Silver sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.87 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.87 (50th percentile).

Data

🔍 Search references for FSR 0569 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–	37.791	72.451	1.077	-1.618	-1.783	-24.864
Liu et al.	2025	37.82	72.47	1.08	-1.54	-1.74	-23.6
Swiggum et al.	2024	37.818	72.467	1.084	-1.538	-1.744	-24.928
Hunt & Reffert	2024	37.818	72.467	1.084	-1.538	-1.744	-23.598
Cavallo et al.	2024	37.641	72.583	1.087	–	–	–
Hunt & Reffert	2023	37.818	72.467	1.084	-1.538	-1.744	-23.598
Just et al.	2023	37.77	72.478	–	–	–	–
Bica et al.	2019	37.815	72.474	–	–	–	–
Kharchenko et al.	2016	37.77	72.478	–	–	–	–
Kharchenko et al.	2013	37.785	72.48	–	-1.66	1.13	–
Kharchenko et al.	2012	37.785	72.48	–	-2.33	0.33	–
Froebrich et al.	2007	37.825	72.474	–	–	–	–

💡 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–	1.015	1.44	2.19	13	-0.320	446	–	–
Liu et al.	2025	1.00	0.27	–	13	–	–	–	–
Swiggum et al.	2024	0.89	–	–	5	–	606	–	–
Hunt & Reffert	2024	0.88	1.12	2.19	5	–	446⁽¹⁾	–	–
Cavallo et al.	2024	1.03	1.44	–	4	-0.320	–	–	–
Hunt & Reffert	2023	0.88	1.12	2.19	5	–	–	–	–
Just et al.	2023	–	–	–	237	–	136	–	–
Kharchenko et al.	2016	2.38	4.14	–	237	–	–	–	–
Kharchenko et al.	2013	2.38	4.14	–	237	–	–	–	–
Kharchenko et al.	2012	1.80	4.14	–	501	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
UBC 187	31.4	37.86	72.42	1.08	-1.67	-1.74	-24.91	0.0
FSR 0568	7.9	37.29	72.18	1.07	-1.65	-1.99	-24.86	0.27
BDSB 53	3.8	37.03	72.64	1.06	-1.3	-1.49	-25.77	0.45
Teutsch 191	3.8	36.95	72.64	1.07	-1.32	-1.47	-17.0	0.06
CWWDL 14255	0.9	37.43	73.0	1.11	-1.36	-1.81	-26.85	0.1
OC 0240	0.9	37.5	73.02	1.12	-1.37	-1.81	-26.85	0.07

💡 Note: The % column shows the percentage of members that FSR 0569 shares with each listed object.

Visualization

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