HSC 665

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UTI:
UCC Trust Index

C_N C_dens C_C3 C_lit C_dup
0.39 1.0 0.38 0.33 0.95
C3
N_50
r_50
CB 39 1.5
Summary

HSC 665 is a poorly populated, very dense object of low C3 quality. It is located at a moderate distance from the Sun, above the mid-plane. It was recently reported in the literature.This is a unique object, which shares a very small 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) 310.596 45.494 0.305 -3.337 -5.119 –
Cavallo et al. (2024) 310.597 45.492 0.306 – – –
Hunt & Reffert (2024) 310.596 45.494 0.305 -3.337 -5.119 –
Hu & Soubiran (2025) 310.597 45.492 – – – –
           
UCC 310.597 45.495 0.31 -3.348 -5.137 –
Galactocentric position Galactocentric position diagram

How are the galactocentric plots generated?

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Estimated members

HSC 665 UCC
HSC 665 HUNT23

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Fundamental parameters

Reference Values
Hunt & Reffert (2023) AV50=2.686, diffAV50=2.108, MOD50=12.32, logAge50=8.324
Cavallo et al. (2024) AV50=1.98, dMod50=12.16, logAge50=8.79, [Fe/H]50=0.31
Hunt & Reffert (2024) MassJ=450.959, MassTot=450.959
Hu & Soubiran (2025) MA22=-0.26, MA23f=-0.26, MK24=-0.1, MF24=-0.36

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Cluster region map

Objects with shared members

Cluster % RA DEC Plx pmRA pmDE Rv UTI
CWNU 3421 92.3 310.6 45.49 0.31 -3.35 -5.14 – 0.02
FoF 1768 5.1 310.69 45.5 0.31 -3.26 -4.78 -38.67 0.04