FSR 0771

(MWSC 460)

0.65 UTI

0.58

C_N

0.48

C_dens

0.75

C_C3

0.71

C_lit

1.0

C_dup

N_m (P>50%) 67

Core radius and density 1.6 [pc], 2.4 [pc^-2]

C3 classification AB

C_N 0.58 Moderately populated
C_dens 0.48 Loose
C_C3 0.75 High quality
C_lit 0.71 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 0771 is a moderately populated, loose object of high C3 quality. Its parallax locates it at a relatively close 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 metallicity parameter (see Parameters). It is moderately studied in the literature.

Relatively close Moderate extinction Near-solar metallicity Intermediate age

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

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).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.2361, e_all=0.2031.

Data

🔍 Search references for FSR 0771 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–	75.923	32.158	0.614	1.491	-4.254	-4.012
Li et al.	2025	75.919	32.157	0.618	1.631	-4.203	–
Almeida et al.	2025	75.902	32.164	–	–	–	–
Zhang et al.	2024	75.921	32.145	–	–	–	–
Hunt & Reffert	2024	75.921	32.145	0.611	1.498	-4.255	-6.513
Cavallo et al.	2024	75.927	32.133	0.61	–	–	–
Hunt & Reffert	2023	75.921	32.145	0.611	1.498	-4.255	-6.513
Almeida et al.	2023	75.942	32.177	–	–	–	–
Just et al.	2023	75.935	32.165	–	–	–	–
Tarricq et al.	2022	75.917	32.178	0.584	1.484	-4.251	–
Dias et al.	2021	75.902	32.164	0.631	1.642	-4.214	-3.464
Cantat-Gaudin et al.	2020	75.919	32.157	0.618	1.631	-4.203	–
Zhong et al.	2020	75.919	32.157	–	1.631	-4.203	-10.517
Cantat-Gaudin & Anders	2020	75.919	32.157	0.618	1.631	-4.203	–
Bossini et al.	2019	75.919	32.157	–	–	–	–
Soubiran et al.	2018	75.919	32.157	–	–	–	-3.37
Bica et al.	2019	75.954	32.138	–	–	–	–
Cantat-Gaudin et al.	2018	75.919	32.157	0.618	1.631	-4.203	–
Dib et al.	2018	75.945	32.165	–	–	–	–
Joshi et al.	2016	75.945	32.165	–	–	–	–
Kharchenko et al.	2016	75.935	32.165	–	–	–	–
Kharchenko et al.	2013	75.945	32.165	–	3.96	-5.49	–
Kharchenko et al.	2012	75.945	32.165	–	3.96	-5.49	–
Froebrich et al.	2007	75.946	32.142	–	–	–	–

💡 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–	1.55	2.185	1.03	324	0.010	224	0.66	–
Li et al.	2025	1.45	2.20	–	369	-0.017	–	–	–
Almeida et al.	2025	1.44	2.19	–	301	–	226	–	–
Zhang et al.	2024	–	–	–	–	0.001⁽¹⁾	–	–	–
Hunt & Reffert	2024	1.55	2.14	1.03	215	–	322⁽¹⁾	–	–
Cavallo et al.	2024	1.51	2.11	–	372	0.310	–	–	–
Hunt & Reffert	2023	1.55	2.14	1.03	215	–	–	–	–
Almeida et al.	2023	1.46	2.18	–	315	0.016	222⁽¹⁾	0.66	–
Just et al.	2023	–	–	–	327	–	86	–	–
Tarricq et al.	2022	1.47	–	–	309	–	–	–	–
Dias et al.	2021	1.44	2.19	–	301	0.099	–	–	–
Cantat-Gaudin et al.	2020	1.53	1.64	–	282	–	–	–	–
Kounkel et al.	2020	1.51	2.01	–	324	–	–	–	–
Zhong et al.	2020	1.55⁽¹⁾	–	–	–	0.010	–	–	–
Cantat-Gaudin & Anders	2020	1.55	–	–	–	–	–	–	–
Bossini et al.	2019	1.86	2.02	–	157	0.000	–	–	–
Soubiran et al.	2018	1.55	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	1.55	–	–	–	–	–	–	–
Dib et al.	2018	1.71	–	–	327	–	–	–	–
Joshi et al.	2016	1.71	2.37	–	327	–	–	–	–
Kharchenko et al.	2016	1.71	2.37	–	327	–	–	–	–
Kharchenko et al.	2013	1.71	2.37	–	327	–	–	–	–
Kharchenko et al.	2012	1.71	2.37	–	327	–	–	–	–

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

Visualization

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