HSC 553

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0.50 UTI
0.4
CN
0.83
Cdens
0.75
CC3
0.25
Clit
1.0
Cdup
Radius (P>50% members) 4.6 [arcmin]
  • CN 0.4 Poorly populated
  • Cdens 0.83 Dense
  • CC3 0.75 High quality
  • Clit 0.25 Poorly studied
  • Cdup 1.0 Unique

Overview

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HSC 553 is a poorly populated, dense object of high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It was recently reported in the literature.
Relatively close Low extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Data

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Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC – 296.088 34.889 0.43 -1.133 -4.234 -14.811
Hu & Soubiran 2025 296.099 34.879 – – – –
Hunt & Reffert 2024 296.074 34.902 0.426 -1.152 -4.254 -19.32
Cavallo et al. 2024 296.099 34.879 0.425 – – –
Hunt & Reffert 2023 296.074 34.902 0.426 -1.152 -4.254 -19.32

💡 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 – – – – -0.250* – – –
Hunt & Reffert 2024 – – – – – 73* – –
Cavallo et al. 2024 2.32 1.17 – 537 -0.100 – – –
Hunt & Reffert 2023 2.19 0.26 0.40 1285 – – – –

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

Visualization

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