FSR 0771

(MWSC 460)

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0.87 UTI
0.58
CN
1.0
Cdens
0.75
CC3
1.0
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 67
Radius (P>50% members) 7.2 [arcmin]
  • CN 0.58 Moderately populated
  • Cdens 1.0 Very dense
  • CC3 0.75 High quality
  • Clit 1.0 Very well-studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
ℹī¸
FSR 0771 is a moderately populated, very dense 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 very well-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.

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 – 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 –
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 –
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] Bfr BSS
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* – – –
Hunt & Reffert 2024 – – – – – 322* – –
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* 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 – – – –
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 – – – – – – –
Kharchenko et al. 2016 1.71 2.33 – 327 – – – –
Kharchenko et al. 2013 1.71 2.33 – 327 – – – –
Kharchenko et al. 2012 1.71 2.33 – 327 – – – –

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Visualization
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FSR 0771 UCC
FSR 0771 HUNT23
FSR 0771 CANTAT20
Galactocentric position diagram