FSR 1441

(MWSC 1524)

0.67 UTI

0.58

C_N

0.77

C_dens

0.75

C_C3

0.61

C_lit

1.0

C_dup

N_m (P>50%) 67

Core radius and density 1.2 [pc], 3.9 [pc^-2]

C3 classification AB

C_N 0.58 Moderately populated
C_dens 0.77 Dense
C_C3 0.75 High quality
C_lit 0.61 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 1441 is a moderately populated, dense object of high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the mass parameter (see Parameters). It is moderately studied in the literature.

Distant Moderate extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.17 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.17 (50th percentile).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.2452, e_all=0.1204.

Data

🔍 Search references for FSR 1441 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–	129.88	-47.1	0.203	-3.677	3.602	58.654
Li et al.	2025	129.88	-47.098	0.189	-3.723	3.567	–
Hu & Soubiran	2025	129.874	-47.099	–	–	–	–
Hunt & Reffert	2024	129.885	-47.096	0.21	-3.683	3.611	57.565
Cavallo et al.	2024	129.874	-47.099	0.211	–	–	–
Hunt & Reffert	2023	129.885	-47.096	0.21	-3.683	3.611	57.565
Just et al.	2023	129.865	-47.097	–	–	–	–
Jadhav & Subramaniam	2021	129.88	-47.098	–	–	–	–
Cantat-Gaudin et al.	2020	129.88	-47.098	0.189	-3.723	3.567	–
Cantat-Gaudin & Anders	2020	129.88	-47.098	0.189	-3.723	3.567	–
Soubiran et al.	2018	129.88	-47.098	–	–	–	124.82
Cantat-Gaudin et al.	2018	129.88	-47.098	0.189	-3.723	3.567	–
Dias et al.	2018	–	–	–	-5.28	3.0	–
Dib et al.	2018	129.87	-47.1	–	–	–	–
Sampedro et al.	2017	129.9	-47.108	–	-1.93	3.44	–
Joshi et al.	2016	129.87	-47.1	–	–	–	–
Kharchenko et al.	2016	129.865	-47.097	–	–	–	–
Dias et al.	2014	129.9	-47.108	–	-1.13	3.46	–
Kharchenko et al.	2013	129.87	-47.1	–	-5.05	7.73	–
Froebrich et al.	2007	129.9	-47.108	–	–	–	–
Dias et al.	2002	129.9	-47.108	–	-1.13	3.46	–

💡 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–	4.3	1.97	1.95	537	-0.050	528	–	0
Li et al.	2025	4.56	2.02	–	537	-0.015	–	–	–
Hu & Soubiran	2025	–	–	–	–	-0.130⁽⁵⁾	–	–	–
Hunt & Reffert	2024	4.30	2.03	1.95	593	–	756⁽¹⁾	–	–
Cavallo et al.	2024	3.37	2.15	–	661	-0.050	–	–	–
Hunt & Reffert	2023	4.30	2.03	1.95	593	–	–	–	–
Just et al.	2023	–	–	–	537	–	58	–	–
Jadhav & Subramaniam	2021	4.35	1.39	–	708	–	528	–	0⁽¹⁾
Cantat-Gaudin et al.	2020	4.35	1.39	–	708	–	–	–	–
Kounkel et al.	2020	4.09	2.02	–	794	–	–	–	–
Cantat-Gaudin & Anders	2020	4.58	–	–	–	–	–	–	–
Soubiran et al.	2018	4.58	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	4.58	–	–	–	–	–	–	–
Dib et al.	2018	1.66	–	–	537	–	–	–	–
Joshi et al.	2016	1.66	1.97	–	537	–	–	–	–
Kharchenko et al.	2016	1.66	1.97	–	537	–	–	–	–
Kharchenko et al.	2013	1.66	1.97	–	537	–	–	–	–
Dias et al.	2002	1.66	1.97	–	537	–	–	–	–

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

Visualization

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