UPK 654
(OCSN 323)
Summary
UPK 654 is a moderately populated, very dense object of very high C3 quality. It is located at a close distance from the Sun, below the mid-plane. It is moderately studied in the literature.
This object shares a large percentage of members with a later reported entry.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Sim et al. (2019) | 277.359 | -34.49 | – | 1.13 | -8.65 | – |
| Cantat-Gaudin et al. (2020) | 277.329 | -34.528 | 1.97 | 1.165 | -8.67 | – |
| Dias et al. (2021) | 277.283 | -34.527 | 1.96 | 1.157 | -8.652 | 5.384 |
| Tarricq et al. (2022) | 277.348 | -34.451 | 1.978 | 1.181 | -8.643 | – |
| He et al. (2022) | 277.308 | -34.502 | 1.964 | 1.205 | -8.721 | – |
| Qin et al. (2023) | 277.35 | -34.52 | 1.95 | 1.19 | -8.71 | 0.97 |
| Alfonso et al. (2024) | 277.22 | -34.52 | 1.925 | 1.172 | -8.656 | – |
| Almeida et al. (2025) | 277.283 | -34.527 | – | – | – | – |
| UCC | 277.301 | -34.542 | 1.968 | 1.189 | -8.667 | 0.649 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Sim et al. (2019) | d_pc=503, log(age)=8.0 |
| Cantat-Gaudin et al. (2020) | AVNN=0.16, DistPc=519.0, AgeNN=7.9 |
| Dias et al. (2021) | Av=0.51, Dist=499, logage=8.123, [Fe/H]=-0.047 |
| Tarricq et al. (2022) | Dist=511, logAgeNN=7.92 |
| He et al. (2022) | A0=0.6, logAge=7.85 |
| Qin et al. (2023) | E(B-V)=0.25, m-M=9.2, logt=8.4 |
| Alfonso et al. (2024) | AV=0.16082, MOD=8.57935, logAge=7.83047, Z=-0.0464 |
| Almeida et al. (2025) | AV=0.51, Dist=499, logAge=8.123, MassRk=111.6 |
Search coordinates in Bayestar19
Cluster region map
Objects with shared members
| Cluster | % | RA | DEC | Plx | pmRA | pmDE | Rv | UTI |
|---|---|---|---|---|---|---|---|---|
| LISC 3530 | 98.7 | 277.3 | -34.54 | 1.97 | 1.18 | -8.66 | -0.0 | 0.09 |