UPK 552
(OCSN 315)
Summary
UPK 552 is a poorly populated, very dense object of high C3 quality. It is located at a very 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) | 158.704 | -47.287 | – | -22.45 | 6.31 | – |
| Cantat-Gaudin et al. (2020) | 158.509 | -47.263 | 3.056 | -22.634 | 6.34 | – |
| Dias et al. (2021) | 158.547 | -47.243 | 3.048 | -22.57 | 6.35 | 7.675 |
| Tarricq et al. (2022) | 158.54 | -47.106 | 3.071 | -22.444 | 6.359 | – |
| He et al. (2022) | 158.302 | -47.082 | 3.076 | -22.516 | 6.572 | – |
| Qin et al. (2023) | 158.39 | -47.08 | 3.07 | -22.57 | 6.45 | 9.18 |
| Hunt & Reffert (2023) | 158.46 | -46.986 | 3.166 | -23.087 | 6.501 | 3.594 |
| Cavallo et al. (2024) | 158.908 | -47.225 | 3.169 | – | – | – |
| Alfonso et al. (2024) | 158.395 | -47.18 | 3.049 | -22.519 | 6.595 | – |
| Almeida et al. (2025) | 158.547 | -47.243 | – | – | – | – |
| UCC | 158.498 | -47.229 | 3.074 | -22.479 | 6.497 | 4.749 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Sim et al. (2019) | d_pc=345, log(age)=7.95 |
| Cantat-Gaudin et al. (2020) | AVNN=0.0, DistPc=324.0, AgeNN=8.07 |
| Dias et al. (2021) | Av=0.131, Dist=324, logage=8.284, [Fe/H]=-0.04 |
| Tarricq et al. (2022) | Dist=320, logAgeNN=8.08 |
| He et al. (2022) | A0=0.35, logAge=7.85 |
| Qin et al. (2023) | E(B-V)=0.07, m-M=7.64, logt=7.9 |
| Hunt & Reffert (2023) | AV50=0.081, diffAV50=0.344, MOD50=7.419, logAge50=8.033 |
| Cavallo et al. (2024) | AV50=0.36, dMod50=7.6, logAge50=7.81, [Fe/H]50=0.38 |
| Alfonso et al. (2024) | AV=0.00084, MOD=7.55973, logAge=7.87321, Z=-0.0396 |
| Almeida et al. (2025) | AV=0.131, Dist=324, logAge=8.284, MassRk=44.7 |
Search coordinates in Bayestar19