Berkeley 20
(OCL 497; MWSC 572)
Summary
Berkeley 20 is a rich, very dense object of very high C3 quality. It is located at a very large distance from the Sun, well below the mid-plane. It is very well-studied in the literature.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Dias et al. (2002) | 83.154 | 0.188 | – | 1.51 | -4.11 | 70.0 |
| Chen et al. (2003) | 83.248 | 0.21 | – | – | – | – |
| Kharchenko et al. (2012) | 83.154 | 0.183 | – | -1.62 | -4.26 | – |
| Loktin & Popova (2017) | 83.16 | -0.188 | – | 1.51 | -4.11 | 75.7 |
| Cantat-Gaudin et al. (2018) | 83.152 | 0.185 | 0.04 | 0.808 | -0.244 | – |
| Bica et al. (2019) | 83.16 | 0.184 | – | – | – | – |
| Donor et al. (2020) | 83.154 | 0.183 | – | 1.04 | -0.16 | 78.8 |
| Cantat-Gaudin et al. (2020) | 83.152 | 0.185 | 0.04 | 0.808 | -0.244 | – |
| Rain et al. (2021) | 83.152 | 0.185 | 0.04 | 0.808 | -0.244 | – |
| Jaehnig et al. (2021) | 83.155 | 0.189 | 0.045 | 0.82 | -0.259 | – |
| Hunt & Reffert (2023) | 83.154 | 0.188 | 0.094 | 0.827 | -0.246 | 78.888 |
| Cavallo et al. (2024) | 83.142 | 0.177 | 0.116 | – | – | – |
| Hunt & Reffert (2024) | 83.154 | 0.188 | 0.094 | 0.827 | -0.246 | 78.888 |
| UCC | 83.153 | 0.186 | 0.1 | 0.869 | -0.231 | 79.133 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Dias et al. (2002) | E(B-V)=0.12, Dist=8400.0, Age=9.78, [Fe/H]=-0.3 |
| Chen et al. (2003) | E(B-V)=0.12, HDis=8400, Age=6.02, [Fe/H]_1=-0.75 |
| Kharchenko et al. (2012) | e_bv=0.121, distance=8399, log_age=9.78, metallicity=-0.61 |
| Loktin & Popova (2017) | E(B-V)=1.5, Dist=8802, logt=9.729 |
| Cantat-Gaudin et al. (2018) | dmode=14402.1 |
| Donor et al. (2020) | Fe/H=-0.4 |
| Cantat-Gaudin et al. (2020) | AVNN=0.37, DistPc=8728.0, AgeNN=9.68 |
| Rain et al. (2021) | E(B-V)=0.12, Dist=14402.1, log(Age)=9.78, NBSS=6 |
| Jaehnig et al. (2021) | dmode=14.228 |
| Hunt & Reffert (2023) | AV50=0.461, diffAV50=1.689, MOD50=14.514, logAge50=9.265 |
| Cavallo et al. (2024) | AV50=1.35, dMod50=13.02, logAge50=9.79, [Fe/H]50=-0.72 |
| Hunt & Reffert (2024) | MassJ=833.904, MassTot=1145.08 |
Search coordinates in Bayestar19