FSR 1051

(MWSC 1003)

0.76 UTI

0.62

C_N

1.0

C_dens

0.5

C_C3

0.84

C_lit

1.0

C_dup

N₅₀ (P>50% members) 75

Stellar density (N₅₀/rad) 9.1 [N/pc²]

C3 classification BB

C_N 0.62 Moderately populated
C_dens 1.0 Very dense
C_C3 0.5 Intermediate quality
C_lit 0.84 Well-studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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FSR 1051 is a moderately populated, very dense object of intermediate C3 quality. Its parallax locates it at a moderate^* distance, above 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 metallicity parameter (see Parameters). It is well-studied in the literature.

(*): The parallax distance estimate (~2.53 kpc) differs significantly from the median photometric distance (~1.89 kpc).

Relatively close Moderate extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

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

Data

🔍 Search references for FSR 1051 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–	103.046	3.657	0.395	-0.781	-2.641	36.992
Almeida et al.	2025	103.043	3.664	–	–	–	–
Zhang et al.	2024	103.048	3.653	–	–	–	–
Hunt & Reffert	2024	103.048	3.653	0.384	-0.772	-2.632	36.989
Cavallo et al.	2024	103.043	3.64	0.384	–	–	–
Hunt & Reffert	2023	103.048	3.653	0.384	-0.772	-2.632	36.989
Just et al.	2023	103.028	3.657	–	–	–	–
Dias et al.	2021	103.043	3.664	0.406	-0.765	-2.655	–
Cantat-Gaudin et al.	2020	103.046	3.662	0.399	-0.761	-2.639	–
Zhong et al.	2020	103.046	3.662	–	-0.761	-2.639	41.86
Cantat-Gaudin & Anders	2020	103.046	3.662	0.399	-0.761	-2.639	–
Soubiran et al.	2018	103.046	3.662	–	–	–	37.17
Bica et al.	2019	103.061	3.644	–	–	–	–
Cantat-Gaudin et al.	2018	103.046	3.662	0.399	-0.761	-2.639	–
Kharchenko et al.	2016	103.028	3.657	–	–	–	–
Kharchenko et al.	2013	103.035	3.655	–	0.13	-1.92	–
Froebrich et al.	2007	103.054	3.642	–	–	–	–
Dias et al.	2002	103.054	3.642	–	0.13	-1.92	–

💡 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–	1.89	1.44	2.08	537	-0.066	162	–	–
Almeida et al.	2025	1.89	1.70	–	432	–	162	–	–
Zhang et al.	2024	–	–	–	–	-0.043⁽¹⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	312⁽¹⁾	–	–
Cavallo et al.	2024	1.80	1.88	–	457	-0.350	–	–	–
Hunt & Reffert	2023	2.29	1.84	2.08	327	–	–	–	–
Just et al.	2023	–	–	–	617	–	83	–	–
Dias et al.	2021	1.89	1.70	–	432	-0.089	–	–	–
Cantat-Gaudin et al.	2020	2.48	1.44	–	257	–	–	–	–
Zhong et al.	2020	1.18	1.35	–	8790	0.000	–	–	–
Cantat-Gaudin & Anders	2020	2.33	–	–	–	–	–	–	–
Soubiran et al.	2018	2.33	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	2.33	–	–	–	–	–	–	–
Kharchenko et al.	2016	1.18	1.35	–	617	–	–	–	–
Kharchenko et al.	2013	1.18	1.35	–	617	–	–	–	–
Dias et al.	2002	1.18	1.35	–	617	–	–	–	–

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

Visualization

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