UPK 621
Summary
UPK 621 is a moderately populated, very dense object of high C3 quality. It is located at a close distance from the Sun, near the mid-plane. It is well-studied in the literature.
This object shares a significant percentage of members with a later reported entry.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Sim et al. (2019) | 237.205 | -54.419 | – | -2.57 | -3.08 | – |
| Cantat-Gaudin et al. (2020) | 237.093 | -54.403 | 1.122 | -2.48 | -3.105 | – |
| Dias et al. (2021) | 237.199 | -54.385 | 1.126 | -2.471 | -3.101 | – |
| Hunt & Reffert (2023) | 237.201 | -54.415 | 1.102 | -2.471 | -3.084 | -4.385 |
| Cavallo et al. (2024) | 237.225 | -54.431 | 1.106 | – | – | – |
| Celli et al. (2024) | 237.093 | -54.403 | – | – | – | – |
| Hunt & Reffert (2024) | 237.201 | -54.415 | 1.102 | -2.471 | -3.084 | -4.385 |
| Alfonso et al. (2024) | 237.019 | -54.401 | 1.076 | -2.556 | -3.086 | – |
| Almeida et al. (2025) | 237.199 | -54.385 | – | – | – | – |
| UCC | 237.129 | -54.428 | 1.113 | -2.498 | -3.122 | -1.099 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Sim et al. (2019) | d_pc=866, log(age)=8.8 |
| Cantat-Gaudin et al. (2020) | AVNN=0.66, DistPc=842.0, AgeNN=7.42 |
| Dias et al. (2021) | Av=0.942, Dist=878, logage=7.559, [Fe/H]=0.15 |
| Hunt & Reffert (2023) | AV50=0.901, diffAV50=1.079, MOD50=9.69, logAge50=7.812 |
| Cavallo et al. (2024) | AV50=1.02, dMod50=9.83, logAge50=7.25, [Fe/H]50=-0.21 |
| Celli et al. (2024) | Age=26.3, Mc=149.9 |
| Hunt & Reffert (2024) | MassJ=127.031, MassTot=161.621 |
| Alfonso et al. (2024) | AV=0.65963, MOD=9.63012, logAge=7.68071, Z=0.14984 |
| Almeida et al. (2025) | AV=0.942, Dist=878, logAge=7.559, MassRk=91.0 |
Search coordinates in Bayestar19
Cluster region map
Objects with shared members
| Cluster | % | RA | DEC | Plx | pmRA | pmDE | Rv | UTI |
|---|---|---|---|---|---|---|---|---|
| CWWDL 14388 | 65.5 | 237.18 | -54.42 | 1.11 | -2.51 | -3.11 | -1.1 | 0.0 |