UPK 542
Summary
UPK 542 is a poorly populated, loose object of intermediate C3 quality. It is located at a close distance from the Sun, below the mid-plane. It is well-studied in the literature.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Sim et al. (2019) | 134.108 | -54.331 | – | -4.87 | 2.56 | – |
| Cantat-Gaudin et al. (2020) | 134.258 | -54.303 | 1.198 | -4.897 | 2.508 | – |
| Dias et al. (2021) | 134.113 | -54.299 | 1.222 | -4.944 | 2.582 | 14.159 |
| Hunt & Reffert (2023) | 134.24 | -54.469 | 1.198 | -4.909 | 2.747 | 25.18 |
| Cavallo et al. (2024) | 134.141 | -54.396 | 1.207 | – | – | – |
| Hunt & Reffert (2024) | 134.24 | -54.469 | 1.198 | -4.909 | 2.747 | 25.18 |
| Alfonso et al. (2024) | 133.923 | -54.6 | 1.152 | -4.977 | 2.697 | – |
| Almeida et al. (2025) | 134.113 | -54.299 | – | – | – | – |
| Hu & Soubiran (2025) | 134.141 | -54.396 | – | – | – | – |
| UCC | 134.121 | -54.381 | 1.209 | -4.871 | 2.651 | 26.58 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Sim et al. (2019) | d_pc=835, log(age)=8.8 |
| Cantat-Gaudin et al. (2020) | AVNN=0.49, DistPc=808.0, AgeNN=8.8 |
| Dias et al. (2021) | Av=0.684, Dist=797, logage=8.637, [Fe/H]=-0.05 |
| Tarricq et al. (2022) | Dist=789, logAgeNN=8.8 |
| Hunt & Reffert (2023) | AV50=0.391, diffAV50=0.334, MOD50=9.528, logAge50=8.07 |
| Cavallo et al. (2024) | AV50=1.03, dMod50=9.63, logAge50=9.14, [Fe/H]50=-0.32 |
| Hunt & Reffert (2024) | MassJ=46.8023, MassTot=66.9092 |
| Alfonso et al. (2024) | AV=0.48891, MOD=9.54038, logAge=7.95119, Z=-0.0504 |
| Almeida et al. (2025) | AV=0.684, Dist=797, logAge=8.637, MassRk=78.4 |
| Hu & Soubiran (2025) | MA22=0.0, MA23f=-0.13, MZ23=-0.08, MK24=-0.14, MF24=-0.05 |
Search coordinates in Bayestar19