Ruprecht 8
Summary
Ruprecht 8 is a moderately populated, moderately dense object of high C3 quality. It is located at a moderate 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 |
|---|---|---|---|---|---|---|
| Kharchenko et al. (2012) | 105.438 | -13.56 | – | 1.17 | -0.26 | – |
| Cantat-Gaudin et al. (2020) | 105.424 | -13.539 | 0.444 | -1.02 | -1.424 | – |
| Dias et al. (2021) | 105.423 | -13.527 | 0.453 | -1.02 | -1.433 | – |
| Hunt & Reffert (2023) | 105.43 | -13.539 | 0.449 | -1.001 | -1.385 | 46.271 |
| Cavallo et al. (2024) | 105.471 | -13.552 | 0.451 | – | – | – |
| Hunt & Reffert (2024) | 105.43 | -13.539 | 0.449 | -1.001 | -1.385 | 46.271 |
| Almeida et al. (2025) | 105.423 | -13.527 | – | – | – | – |
| Hu & Soubiran (2025) | 105.471 | -13.552 | – | – | – | – |
| UCC | 105.442 | -13.539 | 0.442 | -1.013 | -1.406 | 23.994 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Kharchenko et al. (2012) | e_bv=0.458, distance=2190, log_age=8.845 |
| Cantat-Gaudin et al. (2020) | AVNN=1.03, DistPc=2251.0, AgeNN=8.6 |
| Dias et al. (2021) | Av=1.354, Dist=1833, logage=8.589, [Fe/H]=-0.086 |
| Hunt & Reffert (2023) | AV50=1.025, diffAV50=0.66, MOD50=11.578, logAge50=8.635 |
| Cavallo et al. (2024) | AV50=0.98, dMod50=11.67, logAge50=8.75, [Fe/H]50=0.61 |
| Hunt & Reffert (2024) | MassJ=515.452, MassTot=643.577 |
| Almeida et al. (2025) | AV=1.354, Dist=1833, logAge=8.589, MassRk=285.1 |
| Hu & Soubiran (2025) | MA22=-0.26, MA23f=-0.34, MZ23=-0.36, MK24=-0.17, MF24=-0.18 |
Search coordinates in Bayestar19
Cluster region map
Objects with shared members
| Cluster | % | RA | DEC | Plx | pmRA | pmDE | Rv | UTI |
|---|---|---|---|---|---|---|---|---|
| UBC 219 | 96.4 | 105.44 | -13.56 | 0.44 | -1.01 | -1.4 | 23.99 | 0.09 |