UBC 550

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UTI:
UCC Trust Index

C_N C_dens C_C3 C_lit C_dup
0.75 1.0 1.0 0.58 1.0
C3
N_50
r_50
AA 111 3.7
Summary

UBC 550 is a rich, very dense object of very high C3 quality. It is located at a moderate distance from the Sun, near the mid-plane. It is moderately studied in the literature.

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

Search object in SciX | Simbad

Positions

Reference RA DEC Plx pmRA pmDE Rv
Castro-Ginard et al. (2020) 252.644 -45.066 0.369 -2.558 -4.123 –
Cantat-Gaudin et al. (2020) 252.65 -45.07 0.37 -2.564 -4.136 –
Dias et al. (2021) 252.634 -45.062 0.361 -2.546 -4.108 –
Hunt & Reffert (2023) 252.622 -45.08 0.392 -2.574 -4.111 -47.495
Cavallo et al. (2024) 252.64 -45.07 0.392 – – –
Hunt & Reffert (2024) 252.622 -45.08 0.392 -2.574 -4.111 -47.495
Almeida et al. (2025) 252.634 -45.062 – – – –
           
UCC 252.627 -45.066 0.384 -2.572 -4.147 -14.353
Galactocentric position Galactocentric position diagram

How are the galactocentric plots generated?

Search coordinates in CDS | Simbad

Estimated members

UBC 550 UCC
UBC 550 HUNT23
UBC 550 CANTAT20

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Fundamental parameters

Reference Values
Cantat-Gaudin et al. (2020) AVNN=2.42, DistPc=2589.0, AgeNN=7.67
Dias et al. (2021) Av=2.623, Dist=2491, logage=7.13, [Fe/H]=0.356
Hunt & Reffert (2023) AV50=2.819, diffAV50=2.081, MOD50=11.811, logAge50=8.157
Cavallo et al. (2024) AV50=2.7, dMod50=11.85, logAge50=8.45, [Fe/H]50=0.61
Hunt & Reffert (2024) MassJ=1104.12, MassTot=1104.12
Almeida et al. (2025) AV=2.623, Dist=2491, logAge=7.13, MassRk=697.0

Search coordinates in Bayestar19

Cluster region map

Objects with shared members

Cluster % RA DEC Plx pmRA pmDE Rv UTI
OC 0669 22.5 252.63 -45.07 0.4 -2.58 -4.15 -30.48 0.0