FSR 0435

(MWSC 3736)

0.34 UTI

0.31

C_N

0.23

C_dens

0.5

C_C3

0.32

C_lit

1.0

C_dup

N_m (P>50%) 31

Core radius and density 1.6 [pc], 1.2 [pc^-2]

C3 classification BB

C_N 0.31 Poorly populated
C_dens 0.23 Very loose
C_C3 0.5 Intermediate quality
C_lit 0.32 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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FSR 0435 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a low-mass, near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is poorly studied in the literature.

Close Moderate extinction Low mass Near-solar metallicity Intermediate age

Liu et al. (2025)
Classified as primordial binary cluster 141 along with HXHWL_45.

Palma et al. (2025)
Part of multiple system G83, along with HSC_855, HSC_888 and HXHWL_45.

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.99 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.99 (50th percentile).

Data

🔍 Search references for FSR 0435 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–	352.883	59.792	1.009	-1.077	-2.034	-20.872
Hunt & Reffert	2024	352.882	59.78	0.995	-1.051	-2.016	-15.436
Cavallo et al.	2024	352.926	59.811	0.998	–	–	–
Hunt & Reffert	2023	352.882	59.78	0.995	-1.051	-2.016	-15.436
Just et al.	2023	352.799	59.771	–	–	–	–
Dib et al.	2018	352.807	59.775	–	–	–	–
Joshi et al.	2016	352.807	59.775	–	–	–	–
Kharchenko et al.	2016	352.799	59.771	–	–	–	–
Kharchenko et al.	2013	352.807	59.775	–	-2.33	-0.71	–
Kharchenko et al.	2012	352.807	59.775	–	-2.33	-0.71	–
Froebrich et al.	2007	352.792	59.786	–	–	–	–
Dias et al.	2002	352.792	59.786	–	-2.33	-0.71	–

💡 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–	0.81	1.68	1.01	224	0.090	37	–	–
Liu et al.	2025	2.62	0.79	–	63	–	–	–	–
Hunt & Reffert	2024	0.95	2.02	1.01	58	–	56⁽¹⁾	–	–
Cavallo et al.	2024	1.06	2.28	–	30	0.090	–	–	–
Hunt & Reffert	2023	0.95	2.02	1.01	58	–	–	–	–
Just et al.	2023	–	–	–	224	–	18	–	–
Dib et al.	2018	0.81	–	–	224	–	–	–	–
Joshi et al.	2016	0.81	1.68	–	224	–	–	–	–
Kharchenko et al.	2016	0.81	1.68	–	224	–	–	–	–
Kharchenko et al.	2013	0.81	1.68	–	224	–	–	–	–
Kharchenko et al.	2012	0.81	1.68	–	224	–	–	–	–
Dias et al.	2002	0.81	1.68	–	224	–	–	–	–

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

Visualization

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