FSR 0861

(MWSC 521)

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0.16 UTI
0.0
CN
0.03
Cdens
0.12
CC3
0.31
Clit
1.0
Cdup
Radius (P>50% members) 8.5 [arcmin]
  • CN 0.0 Sparse
  • Cdens 0.03 Very loose
  • CC3 0.12 Very low quality
  • Clit 0.31 Poorly studied
  • Cdup 1.0 Unique

Overview

FSR 0861 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a moderate* distance, well below the mid-plane, affected by moderate extinction. It is catalogued as an old cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~4.13 kpc) differs significantly from the median photometric distance (~2.07 kpc).

⚠️ Warning: the low UTI value and no obvious signs of duplication (Cdup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Relatively close Moderate extinction Old

Data

Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 80.817 18.783 0.242 0.255 -0.84 38.227
Just et al. 2023 80.809 18.746
Bica et al. 2019 80.821 18.746
Kharchenko et al. 2016 80.809 18.746
Kharchenko et al. 2013 80.817 18.746 1.78 -2.53
Froebrich et al. 2007 80.817 18.746

💡 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
Just et al. 2023 1059 62
Kharchenko et al. 2016 2.07 1.16 1059
Kharchenko et al. 2013 2.07 1.16 1059

💡 Note: The parameters are sometimes transformed from their original values to match the format of the columns shown here, see FAQ. The columns DAv, Bfr, BSS correspond to differential extinction, binary fraction, and blue stragglers, respectively. BSS values can be listed as fractions or integers.

Visualization

Galactocentric position diagram

💡 Note: How are the galactocentric plots generated? See FAQ.