Theia 1841

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UTI:
UCC Trust Index

C_N C_dens C_C3 C_lit C_dup
0.74 1.0 0.75 0.33 0.69
C3
N_50
r_50
AB 99 7.4
Summary

Theia 1841 is a moderately populated, very dense object of high C3 quality. It is located at a relatively close distance from the Sun, near the mid-plane. It was recently reported in the literature.

This is likely a unique object, which shares a moderate 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) 281.319 -2.584 0.751 2.633 1.091 -23.001
Cavallo et al. (2024) 281.342 -2.586 0.752 – – –
Hunt & Reffert (2024) 281.319 -2.584 0.751 2.633 1.091 -23.001
Hu & Soubiran (2025) 281.342 -2.586 – – – –
           
UCC 281.33 -2.6 0.75 2.64 1.117 -12.417
Galactocentric position Galactocentric position diagram

How are the galactocentric plots generated?

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Estimated members

Theia 1841 UCC
Theia 1841 HUNT23

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Fundamental parameters

Reference Values
Hunt & Reffert (2023) AV50=3.872, diffAV50=2.697, MOD50=10.513, logAge50=8.661
Cavallo et al. (2024) AV50=4.08, dMod50=10.69, logAge50=8.7, [Fe/H]50=0.25
Hunt & Reffert (2024) MassJ=575.104, MassTot=580.464
Hu & Soubiran (2025) MA22=-0.04, MA23f=-0.21, MA23g=-0.25, MZ23=-0.03, MK24=-0.15, MF24=-0.26

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Cluster region map

Objects with shared members

Cluster % RA DEC Plx pmRA pmDE Rv UTI
OC 0057 31.3 281.33 -2.59 0.74 2.64 1.13 -12.22 0.36