Berkeley 21
(OCL 469; FSR 0875; MWSC 682)
Summary
Berkeley 21 is a rich, very dense object of high C3 quality. It is located at a large distance from the Sun, below the mid-plane. It is very well-studied in the literature.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Dias et al. (2002) | 87.925 | 21.783 | – | 1.47 | -5.8 | -0.6 |
| Chen et al. (2003) | 87.924 | 21.782 | – | – | – | – |
| Kharchenko et al. (2012) | 87.945 | 21.815 | – | 0.0 | -2.29 | – |
| Loktin & Popova (2017) | 87.93 | 21.815 | – | 0.266 | -1.085 | 12.4 |
| Cantat-Gaudin et al. (2018) | 87.93 | 21.812 | 0.159 | 0.562 | -1.051 | – |
| Bica et al. (2019) | 87.941 | 21.815 | – | – | – | – |
| Soubiran et al. (2018) | 87.93 | 21.812 | – | – | – | 0.49 |
| Cantat-Gaudin et al. (2020) | 87.93 | 21.812 | 0.159 | 0.562 | -1.051 | – |
| Rain et al. (2021) | 87.93 | 21.812 | 0.159 | 0.562 | -1.051 | – |
| Jaehnig et al. (2021) | 87.94 | 21.809 | 0.152 | 0.468 | -0.951 | – |
| Hunt & Reffert (2023) | 87.949 | 21.811 | 0.144 | 0.506 | -1.031 | 3.88 |
| Cavallo et al. (2024) | 87.936 | 21.808 | 0.145 | – | – | – |
| Hunt & Reffert (2024) | 87.949 | 21.811 | 0.144 | 0.506 | -1.031 | 3.88 |
| Hu & Soubiran (2025) | 87.936 | 21.808 | – | – | – | – |
| UCC | 87.938 | 21.808 | 0.146 | 0.528 | -1.032 | 1.249 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Dias et al. (2002) | E(B-V)=0.76, Dist=5000.0, Age=9.34, [Fe/H]=-0.835 |
| Chen et al. (2003) | E(B-V)=0.76, HDis=5000, Age=2.18, [Fe/H]_1=-0.83 |
| Kharchenko et al. (2012) | e_bv=0.666, distance=5716, log_age=9.3, metallicity=-0.835 |
| Loktin & Popova (2017) | E(B-V)=0.483, Dist=3448, logt=9.05 |
| Cantat-Gaudin et al. (2018) | dmode=5312.7 |
| Soubiran et al. (2018) | dmode=5312.7 |
| Cantat-Gaudin et al. (2020) | AVNN=1.96, DistPc=6417.0, AgeNN=9.33 |
| Rain et al. (2021) | E(B-V)=0.76, Dist=5312.7, log(Age)=9.34, NBSS=20 |
| Jaehnig et al. (2021) | dmode=6.653 |
| Hunt & Reffert (2023) | AV50=2.495, diffAV50=1.844, MOD50=13.867, logAge50=8.945 |
| Cavallo et al. (2024) | AV50=2.05, dMod50=13.87, logAge50=9.32, [Fe/H]50=-0.38 |
| Hunt & Reffert (2024) | MassJ=1632.15, MassTot=1632.15 |
| Hu & Soubiran (2025) | MA22=-0.2, MA23f=-0.4, MA23g=-0.33, MZ23=-0.56, MK24=-0.37, MF24=-0.34 |
Search coordinates in Bayestar19