Ruprecht 138
(NGC 6506; MWSC 2771; OCL 16; ESO 521 06)
Summary
Ruprecht 138 is a rich, very dense object of very high C3 quality. It is located at a moderate distance from the Sun, near the mid-plane. It is well-studied in the literature.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Dias et al. (2002) | 269.983 | -24.683 | – | -2.25 | -3.91 | – |
| Kharchenko et al. (2013) | 269.991 | -24.698 | – | -1.43 | -2.67 | – |
| Kharchenko et al. (2016) | 269.982 | -24.699 | – | – | – | – |
| Cantat-Gaudin et al. (2018) | 269.984 | -24.665 | 0.369 | 0.248 | -1.147 | – |
| Bica et al. (2019) | 269.966 | -24.681 | – | – | – | – |
| Soubiran et al. (2018) | 269.984 | -24.665 | – | – | – | -10.54 |
| Cantat-Gaudin et al. (2020) | 269.984 | -24.665 | 0.369 | 0.248 | -1.147 | – |
| Dias et al. (2021) | 269.983 | -24.668 | 0.364 | 0.252 | -1.149 | – |
| Just et al. (2023) | 269.982 | -24.699 | – | – | – | – |
| Hunt & Reffert (2023) | 269.992 | -24.663 | 0.394 | 0.271 | -1.142 | 11.615 |
| Cavallo et al. (2024) | 269.987 | -24.657 | 0.394 | – | – | – |
| Celli et al. (2024) | 269.984 | -24.665 | – | – | – | – |
| Hunt & Reffert (2024) | 269.992 | -24.663 | 0.394 | 0.271 | -1.142 | 11.615 |
| Almeida et al. (2025) | 269.983 | -24.668 | – | – | – | – |
| UCC | 269.996 | -24.664 | 0.382 | 0.264 | -1.137 | 7.775 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Dias et al. (2002) | E(B-V)=0.18, Dist=930.0, Age=9.3 |
| Kharchenko et al. (2013) | E(B-V)=0.708, d=1134.0, logt=8.9 |
| Kharchenko et al. (2016) | E(B-V)=0.708, d=1134.0, logt=8.9 |
| Cantat-Gaudin et al. (2018) | dmode=2514.0 |
| Soubiran et al. (2018) | dmode=2514.0 |
| Cantat-Gaudin et al. (2020) | AVNN=2.21, DistPc=2732.0, AgeNN=6.98 |
| Dias et al. (2021) | Av=2.354, Dist=2258, logage=7.13, [Fe/H]=0.203 |
| Just et al. (2023) | logt=8.9, logmt=1.223 |
| Hunt & Reffert (2023) | AV50=2.588, diffAV50=2.36, MOD50=11.795, logAge50=8.023 |
| Cavallo et al. (2024) | AV50=2.98, dMod50=11.48, logAge50=8.25, [Fe/H]50=-0.23 |
| Celli et al. (2024) | Age=9.5, Mc=1086.9 |
| Hunt & Reffert (2024) | MassJ=1822.48, MassTot=1822.48 |
| Almeida et al. (2025) | AV=2.354, Dist=2258, logAge=7.13, MassRk=625.7 |
Search coordinates in Bayestar19