FSR 0331

(MWSC 3640)

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0.22 UTI
0.0
CN
0.12
Cdens
0.25
CC3
0.38
Clit
1.0
Cdup
Radius (P>50% members) 4.7 [arcmin]
  • CN 0.0 Sparse
  • Cdens 0.12 Very loose
  • CC3 0.25 Low quality
  • Clit 0.38 Poorly studied
  • Cdup 1.0 Unique

Overview

FSR 0331 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate* distance, well below the mid-plane, affected by low extinction. It is catalogued as an old cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~4.23 kpc) differs significantly from the median photometric distance (~3.00 kpc).

Note: This object shares a moderate percentage of members with at least one entry reported in the same catalogue. See table with shared members information.

⚠️ 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.

Distant Low extinction Old

Data

Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 338.633 43.443 0.236 -2.456 -3.065 -48.97
Just et al. 2023 338.678 43.437
Bica et al. 2019 338.647 43.428
Kharchenko et al. 2016 338.678 43.437
Kharchenko et al. 2013 338.685 43.44 -3.19 -1.09
Kharchenko et al. 2012 338.685 43.44 -3.19 -1.09
Froebrich et al. 2007 338.65 43.429

💡 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 1995 628
Kharchenko et al. 2016 3.00 0.13 1995
Kharchenko et al. 2013 3.00 0.13 1995
Kharchenko et al. 2012 3.00 0.13 1995

💡 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.

Cluster % RA DEC Plx pmRA pmDE Rv UTI
FSR 0330 36.0 338.52 43.34 0.26 -2.39 -3.17 14.25 0.25

💡 Note: The % column shows the percentage of members that FSR 0331 shares with each listed object.

Visualization

Galactocentric position diagram

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