Theia 455

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UTI:
UCC Trust Index

C_N C_dens C_C3 C_lit C_dup
0.0 0.09 0.38 0.25 1.0
C3
N_50
r_50
BC 19 49.9
Summary

Theia 455 is a sparse, very loose object of low C3 quality. It is located at a very 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) 138.306 -44.186 2.198 -7.17 -0.049 28.667
Cavallo et al. (2024) 138.833 -44.083 2.198 – – –
Hu & Soubiran (2025) 138.833 -44.083 – – – –
           
UCC 138.644 -44.187 2.208 -7.042 -0.21 30.042
Galactocentric position Galactocentric position diagram

How are the galactocentric plots generated?

Search coordinates in CDS | Simbad

Estimated members

Theia 455 UCC
Theia 455 HUNT23

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Fundamental parameters

Reference Values
Hunt & Reffert (2023) AV50=0.108, diffAV50=0.562, MOD50=8.218, logAge50=8.239
Cavallo et al. (2024) AV50=0.4, dMod50=8.36, logAge50=8.91, [Fe/H]50=0.39
Hu & Soubiran (2025) MA22=-0.34, MA23f=-0.23, MZ23=-0.09, MK24=-0.07, MF24=-0.49

Search coordinates in Bayestar19

Cluster region map