HSC 2199

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0.15 UTI
0.0
CN
0.11
Cdens
0.62
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members) 9.9 [arcmin]
  • CN 0.0 Sparse
  • Cdens 0.11 Very loose
  • CC3 0.62 Intermediate quality
  • Clit 0.0 Rarely studied
  • Cdup 1.0 Unique

Overview

â„šī¸
HSC 2199 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It was recently reported in the literature.

âš ī¸ 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 Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as a moving group.

Data

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Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC – 129.394 -53.26 0.463 -4.347 5.711 17.717
Hu & Soubiran 2025 129.365 -53.349 – – – –
Cavallo et al. 2024 129.365 -53.349 0.458 – – –
Hunt & Reffert 2023 129.374 -53.184 0.458 -4.359 5.693 17.003

💡 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 – – – – -0.120* – – –
Cavallo et al. 2024 1.95 1.51 – 513 0.130 – – –
Hunt & Reffert 2023 2.04 1.38 1.40 590 – – – –

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

Visualization

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