FSR 1212

(MWSC 1115)

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0.74 UTI
0.52
CN
1.0
Cdens
0.75
CC3
0.7
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 55
Radius (P>50% members) 1.2 [arcmin]
  • CN 0.52 Moderately populated
  • Cdens 1.0 Very dense
  • CC3 0.75 High quality
  • Clit 0.7 Moderately 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 1212 is a moderately populated, very dense object of high C3 quality. Its parallax locates it at a large distance, below the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age and mass parameters (see Parameters). It is moderately studied in the literature.
Very distant Moderate extinction Massive Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for FSR 1212 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 – 106.947 -14.145 0.163 -0.339 0.486 –
Hu & Soubiran 2025 106.943 -14.143 – – – –
Hunt & Reffert 2024 106.944 -14.151 0.137 -0.366 0.528 –
Cavallo et al. 2024 106.943 -14.143 0.124 – – –
Hunt & Reffert 2023 106.944 -14.151 0.137 -0.366 0.528 –
Just et al. 2023 106.904 -14.148 – – – –
Perren et al. 2022 106.941 -14.145 – – – –
Cantat-Gaudin et al. 2020 106.941 -14.145 0.216 -0.246 0.314 –
Cantat-Gaudin & Anders 2020 106.941 -14.145 0.216 -0.246 0.314 –
Cantat-Gaudin et al. 2018 106.941 -14.145 0.216 -0.246 0.314 –
Kharchenko et al. 2016 106.904 -14.148 – – – –
Kharchenko et al. 2013 106.909 -14.15 – 0.93 0.57 –
Froebrich et al. 2007 106.946 -14.149 – – – –

💡 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
Hu & Soubiran 2025 – – – – -0.400* – – –
Hunt & Reffert 2024 – – – – – 1056* – –
Cavallo et al. 2024 7.45 1.64 – 1514 -0.110 – – –
Hunt & Reffert 2023 6.62 1.87 2.07 929 – – – –
Just et al. 2023 – – – 447 – 119 – –
Perren et al. 2022 10.05 2.05 – 1259 -0.120 5000 0.51 –
Cantat-Gaudin et al. 2020 9.68 1.54 – 1380 – – – –
Cantat-Gaudin & Anders 2020 4.07 – – – – – – –
Cantat-Gaudin et al. 2018 4.07 – – – – – – –
Kharchenko et al. 2016 1.78 2.39 – 447 – – – –
Kharchenko et al. 2013 1.78 2.39 – 447 – – – –

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

Visualization
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FSR 1212 UCC
FSR 1212 HUNT23
FSR 1212 CANTAT20
Galactocentric position diagram