UPK 54
Summary
UPK 54 is a rich, very dense object of high C3 quality. It is located at a close distance from the Sun, above the mid-plane. It is well-studied in the literature.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Sim et al. (2019) | 286.112 | 15.681 | – | -0.57 | -5.88 | – |
| Cantat-Gaudin et al. (2020) | 286.157 | 15.689 | 1.172 | -0.558 | -5.854 | – |
| Dias et al. (2021) | 286.169 | 15.645 | 1.166 | -0.556 | -5.901 | 36.043 |
| Tarricq et al. (2022) | 286.073 | 15.779 | 1.221 | -0.551 | -5.89 | – |
| He et al. (2022) | 286.161 | 15.761 | 1.218 | -0.539 | -5.899 | – |
| Hunt & Reffert (2023) | 286.254 | 15.722 | 1.209 | -0.575 | -5.912 | -4.904 |
| Cavallo et al. (2024) | 286.192 | 15.714 | 1.214 | – | – | – |
| Hunt & Reffert (2024) | 286.254 | 15.722 | 1.209 | -0.575 | -5.912 | -4.904 |
| Alfonso et al. (2024) | 286.407 | 15.258 | 1.114 | -0.57 | -5.937 | – |
| Almeida et al. (2025) | 286.169 | 15.645 | – | – | – | – |
| UCC | 286.129 | 15.73 | 1.203 | -0.569 | -5.886 | -3.225 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Sim et al. (2019) | d_pc=827, log(age)=7.9 |
| Cantat-Gaudin et al. (2020) | AVNN=0.94, DistPc=807.0, AgeNN=8.07 |
| Dias et al. (2021) | Av=1.07, Dist=812, logage=8.232, [Fe/H]=0.321 |
| Tarricq et al. (2022) | Dist=789, logAgeNN=8.08 |
| He et al. (2022) | A0=1.4, logAge=7.9 |
| Hunt & Reffert (2023) | AV50=1.165, diffAV50=0.596, MOD50=9.514, logAge50=7.889 |
| Cavallo et al. (2024) | AV50=1.35, dMod50=9.7, logAge50=7.95, [Fe/H]50=0.32 |
| Hunt & Reffert (2024) | MassJ=256.030, MassTot=283.942 |
| Alfonso et al. (2024) | AV=0.93786, MOD=9.53115, logAge=7.99880, Z=0.32036 |
| Almeida et al. (2025) | AV=1.07, Dist=812, logAge=8.232, MassRk=341.0 |
Search coordinates in Bayestar19