HSC 490

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C3
N_50
r_50
BC 18 32.7
Summary

HSC 490 is a sparse, very loose object of low C3 quality. It is located at a close distance from the Sun, near the mid-plane. It was recently reported in the literature.

Warning: contains less than 25 stars with P>0.5 estimated.

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

Search object in SciX | Simbad

Positions

Reference RA DEC Plx pmRA pmDE Rv
Hunt & Reffert (2023) 296.999 23.905 1.485 -4.597 -4.117 2.384
Cavallo et al. (2024) 297.334 24.462 1.48
Hu & Soubiran (2025) 297.334 24.462
           
UCC 297.042 23.937 1.435 -4.586 -4.099 1.61
Galactocentric position Galactocentric position diagram

How are the galactocentric plots generated?

Search coordinates in CDS | Simbad

Estimated members

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Fundamental parameters

Reference Values
Hunt & Reffert (2023) AV50=1.06, diffAV50=1.69, MOD50=9.015, logAge50=7.945
Cavallo et al. (2024) AV50=1.27, dMod50=9.2, logAge50=8.81, [Fe/H]50=0.5
Hu & Soubiran (2025) MA22=-0.03, MA23f=-0.07, MZ23=0.06, MK24=-0.05, MF24=-0.05

Search coordinates in Bayestar19

Cluster region map