UPK 21
Summary
UPK 21 is a moderately populated, very dense object of high 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) | 282.938 | -15.191 | – | 7.82 | 0.73 | – |
| Cantat-Gaudin et al. (2020) | 282.895 | -15.15 | 1.667 | 7.839 | 0.721 | – |
| Dias et al. (2021) | 282.89 | -15.165 | 1.679 | 7.831 | 0.756 | -25.27 |
| Tarricq et al. (2022) | 282.911 | -15.203 | 1.672 | 7.84 | 0.671 | – |
| Hunt & Reffert (2023) | 282.92 | -15.174 | 1.679 | 7.797 | 0.694 | -23.852 |
| Cavallo et al. (2024) | 282.985 | -14.911 | 1.682 | – | – | – |
| Hunt & Reffert (2024) | 282.92 | -15.174 | 1.679 | 7.797 | 0.694 | -23.852 |
| Alfonso et al. (2024) | 282.932 | -15.116 | 1.645 | 7.879 | 0.666 | – |
| Almeida et al. (2025) | 282.89 | -15.165 | – | – | – | – |
| UCC | 282.904 | -15.157 | 1.684 | 7.866 | 0.671 | -25.045 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Sim et al. (2019) | d_pc=587, log(age)=8.95 |
| Cantat-Gaudin et al. (2020) | AVNN=0.81, DistPc=578.0, AgeNN=9.06 |
| Dias et al. (2021) | Av=1.484, Dist=591, logage=8.864, [Fe/H]=0.141 |
| Tarricq et al. (2022) | Dist=569, logAgeNN=9.09 |
| Hunt & Reffert (2023) | AV50=1.429, diffAV50=1.601, MOD50=8.755, logAge50=8.669 |
| Cavallo et al. (2024) | AV50=1.93, dMod50=8.82, logAge50=8.55, [Fe/H]50=-0.17 |
| Hunt & Reffert (2024) | MassJ=89.6715, MassTot=188.137 |
| Alfonso et al. (2024) | AV=0.80978, MOD=8.80969, logAge=9.03727, Z=0.14098 |
| Almeida et al. (2025) | AV=1.484, Dist=591, logAge=8.864, MassRk=115.9 |
Search coordinates in Bayestar19