Theia 1976

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UTI:
UCC Trust Index

C_N C_dens C_C3 C_lit C_dup
0.63 1.0 1.0 0.33 0.0
C3
N_50
r_50
AA 76 3.6
Summary

Theia 1976 is a moderately populated, very dense object of very high C3 quality. It is located at a moderate distance from the Sun, below the mid-plane. It was recently reported in the literature.

Warning: This is very likely a duplicate object, which shares a large percentage of members with at least one previously reported entry.

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Positions

Reference RA DEC Plx pmRA pmDE Rv
Hunt & Reffert (2023) 278.32 -13.053 0.388 -0.915 -0.258 -4.098
Cavallo et al. (2024) 278.305 -13.062 0.389 – – –
Hunt & Reffert (2024) 278.32 -13.053 0.388 -0.915 -0.258 -4.098
Hu & Soubiran (2025) 278.305 -13.062 – – – –
           
UCC 278.32 -13.062 0.39 -0.926 -0.246 1.269
Galactocentric position Galactocentric position diagram

How are the galactocentric plots generated?

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Estimated members

Theia 1976 UCC
Theia 1976 HUNT23

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Fundamental parameters

Reference Values
Hunt & Reffert (2023) AV50=2.451, diffAV50=1.787, MOD50=11.809, logAge50=8.551
Cavallo et al. (2024) AV50=2.62, dMod50=11.16, logAge50=8.9, [Fe/H]50=-0.42
Hunt & Reffert (2024) MassJ=819.462, MassTot=891.406
Hu & Soubiran (2025) MA22=-0.22, MA23f=-0.26, MZ23=-0.32, MK24=-0.11, MF24=-0.23

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Cluster region map

Objects with shared members

Cluster % RA DEC Plx pmRA pmDE Rv UTI
CWNU 397 100.0 278.32 -13.06 0.39 -0.93 -0.25 1.27 0.16
UBC 1022 77.6 278.32 -13.06 0.39 -0.93 -0.24 1.27 0.51