FSR 0687

(SAI 37; MWSC 406)

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0.72 UTI
0.76
CN
1.0
Cdens
0.62
CC3
0.6
Clit
1.0
Cdup
C3 classification AC
Number of members (P>50%) 128
Radius (P>50% members) 3.2 [arcmin]
  • CN 0.76 Rich
  • Cdens 1.0 Very dense
  • CC3 0.62 Intermediate quality
  • Clit 0.6 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 0687 is a rich, very dense object of intermediate C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by high extinction. It is catalogued as a massive, near-solar metallicity, old cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It is moderately studied in the literature.
Distant High extinction Massive Near-solar metallicity Old

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for FSR 0687 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 – 69.853 48.202 0.214 0.664 0.267 -31.225
Hu & Soubiran 2025 69.876 48.197 – – – –
Hunt & Reffert 2024 69.833 48.207 0.218 0.68 0.27 –
Cavallo et al. 2024 69.876 48.197 0.215 – – –
He et al. 2023 69.853 48.202 0.187 0.666 0.266 -31.23
Hunt & Reffert 2023 69.833 48.207 0.218 0.68 0.27 –
Donor et al. 2020 69.871 48.194 – 0.53 0.35 -29.3
Bica et al. 2019 69.872 48.213 – – – –
Glushkova et al. 2010 69.863 48.206 – – – –
Froebrich et al. 2007 69.871 48.194 – – – –
Dias et al. 2002 69.871 48.194 – – – –

💡 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 – – – – -0.020* – – –
Hunt & Reffert 2024 – – – – – 1117* – –
Cavallo et al. 2024 4.53 3.93 – 708 0.420 – – –
He et al. 2023 3.55 3.80 – 1585 – – – –
Hunt & Reffert 2023 4.10 3.79 1.27 1259 – – – –
Donor et al. 2020 – – – – -0.150 – – –
Glushkova et al. 2010 7.20 2.39 – 1413 – – – –

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

Visualization
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FSR 0687 UCC
FSR 0687 HUNT23
Galactocentric position diagram