Alessi 170

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UTI:
UCC Trust Index

C_N C_dens C_C3 C_lit C_dup
0.77 1.0 0.75 0.42 1.0
C3
N_50
r_50
AB 146 10.7
Summary

Alessi 170 is a rich, very dense object of high C3 quality. It is located at a relatively close distance from the Sun, below the mid-plane. It is poorly studied in the literature.

This object shares a significant percentage of members with a later reported entry.

Search object in SciX | Simbad

Positions

Reference RA DEC Plx pmRA pmDE Rv
Bica et al. (2019) 100.469 -5.221 – – – –
Hunt & Reffert (2023) 100.456 -5.239 0.698 -0.108 -3.109 0.209
Cavallo et al. (2024) 100.444 -5.245 0.701 – – –
Hunt & Reffert (2024) 100.456 -5.239 0.698 -0.108 -3.109 0.209
Hu & Soubiran (2025) 100.444 -5.245 – – – –
           
UCC 100.454 -5.234 0.701 -0.116 -3.117 0.138
Galactocentric position Galactocentric position diagram

How are the galactocentric plots generated?

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Estimated members

Alessi 170 UCC
Alessi 170 HUNT23

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Fundamental parameters

Reference Values
Hunt & Reffert (2023) AV50=0.739, diffAV50=0.618, MOD50=10.623, logAge50=8.734
Cavallo et al. (2024) AV50=0.81, dMod50=10.78, logAge50=8.85, [Fe/H]50=0.46
Hunt & Reffert (2024) MassJ=573.025, MassTot=731.101
Hu & Soubiran (2025) MA22=-0.14, MA23f=-0.24, MA23g=0.01, MZ23=-0.05, MK24=-0.08, MF24=-0.07

Search coordinates in Bayestar19

Cluster region map

Objects with shared members

Cluster % RA DEC Plx pmRA pmDE Rv UTI
UBC 215 54.1 100.44 -5.26 0.7 -0.11 -3.13 0.17 0.0