FSR 0686

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0.80 UTI
0.77
CN
1.0
Cdens
0.75
CC3
0.75
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 152
Radius (P>50% members) 12.7 [arcmin]
  • CN 0.77 Rich
  • Cdens 1.0 Very dense
  • CC3 0.75 High quality
  • Clit 0.75 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 0686 is a rich, very dense object of high C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, very young cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It is well-studied in the literature.

Note: This object shares a significant percentage of members with a later reported entry. See table with shared members information.

Close Moderate extinction Near-solar metallicity Very young

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

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for FSR 0686 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 – 66.37 46.13 1.095 -1.085 -2.613 -13.09
Li et al. 2025 66.353 46.098 1.087 -1.088 -2.556 –
Almeida et al. 2025 66.353 46.098 – – – –
Zhang et al. 2024 66.397 46.131 – – – –
Hunt & Reffert 2024 66.397 46.131 1.105 -1.104 -2.607 -14.871
Cavallo et al. 2024 66.347 46.133 1.116 – – –
Hunt & Reffert 2023 66.397 46.131 1.105 -1.104 -2.607 -14.871
He et al. 2022 66.373 46.129 1.105 -1.073 -2.607 –
Dias et al. 2021 66.353 46.098 1.09 -1.095 -2.566 –
Cantat-Gaudin et al. 2020 66.353 46.098 1.087 -1.088 -2.556 –
Cantat-Gaudin & Anders 2020 66.353 46.098 1.087 -1.088 -2.556 –
Cantat-Gaudin et al. 2018 66.353 46.098 1.087 -1.088 -2.556 –
Froebrich et al. 2007 66.463 46.098 – – – –
Dias et al. 2002 66.463 46.098 – -1.64 -5.37 –

💡 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 0.78 1.68 – 19 -0.239 – – –
Almeida et al. 2025 0.89 1.72 – 21 – 117 – –
Zhang et al. 2024 – – – – -0.151* – – –
Hunt & Reffert 2024 – – – – – 273* – –
Cavallo et al. 2024 0.96 1.60 – 11 0.070 – – –
Hunt & Reffert 2023 0.86 1.43 1.85 17 – – – –
He et al. 2022 – 1.40 – 14 – – – –
Dias et al. 2021 0.89 1.72 – 21 -0.024 – – –
Cantat-Gaudin & Anders 2020 0.90 – – – – – – –
Cantat-Gaudin et al. 2018 0.90 – – – – – – –
Dias et al. 2002 1.64 3.16 – 407 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
UBC 55 55.9 66.35 46.12 1.1 -1.07 -2.61 -11.57 0.0

💡 Note: The % column shows the percentage of members that FSR 0686 shares with each listed object.

Visualization
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FSR 0686 UCC
FSR 0686 HUNT23
FSR 0686 CANTAT20
Galactocentric position diagram