Ruprecht 28
(FoF 686)
Summary
Ruprecht 28 is a rich, very dense object of high C3 quality. It is located at a moderate distance from the Sun, below the mid-plane. It is well-studied in the literature.
This object shares a very small percentage of members with 2 later reported entries.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Kharchenko et al. (2012) | 114.9 | -30.935 | – | -3.01 | 0.44 | – |
| Loktin & Popova (2017) | 114.9 | -30.936 | – | -1.586 | 1.408 | – |
| Cantat-Gaudin et al. (2018) | 114.9 | -30.933 | 0.198 | -2.567 | 3.854 | – |
| Soubiran et al. (2018) | 114.9 | -30.933 | – | – | – | 89.55 |
| Liu & Pang (2019) | 114.888 | -30.905 | 0.242 | -2.501 | 3.578 | – |
| Cantat-Gaudin et al. (2020) | 114.9 | -30.933 | 0.198 | -2.567 | 3.854 | – |
| Dias et al. (2021) | 114.901 | -30.931 | 0.197 | -2.564 | 3.89 | 89.241 |
| Hunt & Reffert (2023) | 114.904 | -30.935 | 0.218 | -2.566 | 3.806 | 91.367 |
| Cavallo et al. (2024) | 114.891 | -30.917 | 0.219 | – | – | – |
| Hunt & Reffert (2024) | 114.904 | -30.935 | 0.218 | -2.566 | 3.806 | 91.367 |
| Almeida et al. (2025) | 114.901 | -30.931 | – | – | – | – |
| Hu & Soubiran (2025) | 114.891 | -30.917 | – | – | – | – |
| UCC | 114.897 | -30.935 | 0.225 | -2.554 | 3.816 | 91.135 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Kharchenko et al. (2012) | e_bv=0.416, distance=4712, log_age=8.76 |
| Loktin & Popova (2017) | E(B-V)=0.467, Dist=6028, logt=8.93 |
| Cantat-Gaudin et al. (2018) | dmode=4398.5 |
| Soubiran et al. (2018) | dmode=4398.5 |
| Liu & Pang (2019) | Age=0.692, Z=0.5 |
| Cantat-Gaudin et al. (2020) | AVNN=0.83, DistPc=4240.0, AgeNN=9.07 |
| Dias et al. (2021) | Av=1.414, Dist=3707, logage=9.222, [Fe/H]=-0.223 |
| Hunt & Reffert (2023) | AV50=0.894, diffAV50=0.62, MOD50=13.056, logAge50=9.082 |
| Cavallo et al. (2024) | AV50=1.57, dMod50=12.61, logAge50=9.09, [Fe/H]50=-0.49 |
| Hunt & Reffert (2024) | MassJ=887.399, MassTot=984.680 |
| Almeida et al. (2025) | AV=1.414, Dist=3707, logAge=9.222, MassRk=1031.0 |
| Hu & Soubiran (2025) | MA22=-0.17, MA23f=-0.42, MA23g=-0.16, MZ23=-0.21, MK24=-0.33, MF24=-0.2 |
Search coordinates in Bayestar19
Cluster region map
Objects with shared members
| Cluster | % | RA | DEC | Plx | pmRA | pmDE | Rv | UTI |
|---|---|---|---|---|---|---|---|---|
| OC 0424 | 9.2 | 114.91 | -30.93 | 0.23 | -2.56 | 3.8 | 90.94 | 0.0 |
| OC 0425 | 7.9 | 114.89 | -30.94 | 0.22 | -2.56 | 3.81 | 92.47 | 0.0 |