PTB 9

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UTI:
UCC Trust Index

C_N C_dens C_C3 C_lit C_dup
1.0 1.0 1.0 0.5 0.02
C3
N_50
r_50
AA 801 11.1
Summary

PTB 9 is a very rich, very dense object of very high C3 quality. It is located at a close distance from the Sun, above the mid-plane. It is moderately studied 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
Kharchenko et al. (2012) 357.502 68.033 – -2.8 0.04 –
Hunt & Reffert (2023) 357.495 68.031 1.033 1.482 3.963 -44.265
Cavallo et al. (2024) 357.449 68.04 1.033 – – –
Hunt & Reffert (2024) 357.495 68.031 1.033 1.482 3.963 -44.265
Hu & Soubiran (2025) 357.449 68.04 – – – –
UCC 357.454 68.038 1.032 1.484 3.979 -44.717
Galactocentric position Galactocentric position diagram

How are the galactocentric plots generated?

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Estimated members

PTB 9 UCC
PTB 9 HUNT23

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Fundamental parameters

Reference Values
Kharchenko et al. (2012) e_bv=0.7, distance=850, log_age=9.07
Hunt & Reffert (2023) AV50=2.55, diffAV50=1.045, MOD50=9.832, logAge50=8.94
Cavallo et al. (2024) AV50=2.89, dMod50=10.08, logAge50=8.91, [Fe/H]50=-0.03
Hunt & Reffert (2024) MassJ=2676.00
Hu & Soubiran (2025) MA22=0.15, MA23f=-0.13, MA23g=-0.02, MZ23=0.17, MK24=-0.12, MF24=-0.11

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Cluster region


Objects with shared members

Cluster % RA DEC Plx pmRA pmDE Rv UTI
NGC 7762 98.1 357.45 68.04 1.03 1.48 3.98 -44.73 1.0