FSR 1172

(MWSC 1023)

0.72 UTI

0.55

C_N

1.0

C_dens

0.75

C_C3

0.65

C_lit

1.0

C_dup

N₅₀ (P>50% members) 60

Stellar density (N₅₀/rad) 5.3 [N/pc²]

C3 classification AB

C_N 0.55 Moderately populated
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.65 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 1172 is a moderately populated, very 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 age and metallicity parameters (see Parameters). It is moderately studied in the literature.

Relatively close Moderate extinction Near-solar metallicity Intermediate age

Palma et al. (2025)
Classified as optical pair P308, along with CWNU_1438.

Cavallo et al. (2024)
Gold sample.

Almeida et al. (2025)
Mass determination: intermediate fit. Isochrone match: intermediate fit.

Data

🔍 Search references for FSR 1172 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–	103.905	-11.028	0.406	-0.453	-0.288	31.564
Almeida et al.	2025	103.919	-11.033	–	–	–	–
Hunt & Reffert	2024	103.904	-11.031	0.408	-0.422	-0.286	31.564
Cavallo et al.	2024	103.885	-11.03	0.408	–	–	–
Hunt & Reffert	2023	103.904	-11.031	0.408	-0.422	-0.286	31.564
Just et al.	2023	103.901	-11.028	–	–	–	–
Dias et al.	2021	103.919	-11.033	0.373	-0.539	-0.217	–
Cantat-Gaudin et al.	2020	103.909	-11.035	0.39	-0.486	-0.247	–
Cantat-Gaudin & Anders	2020	103.909	-11.035	0.39	-0.486	-0.247	–
Cantat-Gaudin et al.	2018	103.909	-11.035	0.39	-0.486	-0.247	–
Kharchenko et al.	2016	103.901	-11.028	–	–	–	–
Kharchenko et al.	2013	103.908	-11.03	–	-0.94	3.06	–
Froebrich et al.	2007	103.908	-11.019	–	–	–	–

💡 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–	2.37	1.94	0.58	212	0.129	67	–	–
Almeida et al.	2025	2.09	2.02	–	149	–	62	–	–
Hunt & Reffert	2024	–	–	–	–	–	249⁽¹⁾	–	–
Cavallo et al.	2024	2.37	1.74	–	275	0.410	–	–	–
Hunt & Reffert	2023	2.43	1.90	0.58	126	–	–	–	–
Just et al.	2023	–	–	–	631	–	67	–	–
Dias et al.	2021	2.09	2.02	–	149	-0.153	–	–	–
Cantat-Gaudin et al.	2020	2.52	1.71	–	112	–	–	–	–
Cantat-Gaudin & Anders	2020	2.38	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	2.38	–	–	–	–	–	–	–
Kharchenko et al.	2016	2.29	1.94	–	631	–	–	–	–
Kharchenko et al.	2013	2.29	1.94	–	631	–	–	–	–

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

Visualization

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