FSR 1211

(MWSC 1312)

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0.85 UTI
0.77
CN
1.0
Cdens
0.75
CC3
0.86
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 155
Radius (P>50% members) 4.2 [arcmin]
  • CN 0.77 Rich
  • Cdens 1.0 Very dense
  • CC3 0.75 High quality
  • Clit 0.86 Well-studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
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FSR 1211 is a rich, very dense object of high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, old cluster, but with a large variance across recent sources for the absorption parameter (see Parameters). It is well-studied in the literature.
Distant Low extinction Near-solar metallicity Old

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

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for FSR 1211 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 – 115.334 -9.612 0.279 -3.137 2.584 84.176
Li et al. 2025 115.336 -9.607 0.288 -3.137 2.564 –
Hu & Soubiran 2025 115.328 -9.61 – – – –
Almeida et al. 2025 115.338 -9.604 – – – –
Hunt & Reffert 2024 115.338 -9.617 0.284 -3.151 2.574 83.063
Cavallo et al. 2024 115.328 -9.61 0.275 – – –
Hunt & Reffert 2023 115.338 -9.617 0.284 -3.151 2.574 83.063
Almeida et al. 2023 115.338 -9.607 – – – –
Just et al. 2023 115.374 -9.608 – – – –
Dias et al. 2021 115.338 -9.604 0.291 -3.122 2.556 –
Cantat-Gaudin et al. 2020 115.336 -9.607 0.288 -3.137 2.564 –
Cantat-Gaudin & Anders 2020 115.336 -9.607 0.288 -3.137 2.564 –
Bossini et al. 2019 115.336 -9.607 – – – –
Cantat-Gaudin et al. 2018 115.336 -9.607 0.288 -3.137 2.564 –
Kharchenko et al. 2016 115.374 -9.608 – – – –
Kharchenko et al. 2013 115.38 -9.61 – 2.24 -1.23 –
Froebrich et al. 2007 115.362 -9.615 – – – –

💡 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 3.28 0.53 – 1226 -0.223 – – –
Hu & Soubiran 2025 – – – – -0.270* – – –
Almeida et al. 2025 3.18 0.46 – 1334 – 259 – –
Hunt & Reffert 2024 – – – – – 574* – –
Cavallo et al. 2024 2.63 0.26 – 1660 -0.130 – – –
Hunt & Reffert 2023 3.06 0.14 0.58 1343 – – – –
Almeida et al. 2023 3.07 0.03 – 1274 0.027 381* 0.78 –
Just et al. 2023 – – – 1365 – 802 – –
Dias et al. 2021 3.18 0.46 – 1334 -0.185 – – –
Cantat-Gaudin et al. 2020 3.31 0.19 – 1202 – – – –
Cantat-Gaudin & Anders 2020 3.15 – – – – – – –
Bossini et al. 2019 3.18 0.29 – 1067 0.000 – – –
Cantat-Gaudin et al. 2018 3.15 – – – – – – –
Kharchenko et al. 2016 4.33 0.16 – 1365 – – – –
Kharchenko et al. 2013 4.33 0.16 – 1365 – – – –

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

Visualization
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FSR 1211 UCC
FSR 1211 HUNT23
FSR 1211 CANTAT20
Galactocentric position diagram