NGC 637
Summary
NGC 637 is a rich, very dense object of very high C3 quality. It is located at a moderate distance from the Sun, above the mid-plane. It is very well-studied in the literature.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Dias et al. (2002) | 25.767 | 64.04 | – | -1.28 | 0.38 | -45.58 |
| Piskunov et al. (2008) | 25.753 | 64.039 | – | – | – | – |
| Kharchenko et al. (2012) | 25.777 | 64.045 | – | -0.25 | -2.0 | – |
| Loktin & Popova (2017) | 25.77 | 64.04 | – | -0.143 | -0.647 | -39.1 |
| Cantat-Gaudin et al. (2018) | 25.775 | 64.038 | 0.338 | -1.204 | 0.026 | – |
| Cantat-Gaudin et al. (2020) | 25.775 | 64.038 | 0.338 | -1.204 | 0.026 | – |
| Dias et al. (2021) | 25.77 | 64.037 | 0.341 | -1.212 | 0.02 | – |
| Rain et al. (2021) | 25.775 | 64.038 | 0.338 | -1.204 | 0.026 | – |
| Jaehnig et al. (2021) | 25.775 | 64.039 | 0.367 | -1.222 | 0.055 | – |
| Hunt & Reffert (2023) | 25.771 | 64.041 | 0.343 | -1.264 | -0.037 | – |
| Cavallo et al. (2024) | 25.76 | 64.043 | 0.345 | – | – | – |
| Hunt & Reffert (2024) | 25.771 | 64.041 | 0.343 | -1.264 | -0.037 | – |
| Almeida et al. (2025) | 25.77 | 64.037 | – | – | – | – |
| UCC | 25.782 | 64.04 | 0.345 | -1.257 | -0.024 | – |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Dias et al. (2002) | E(B-V)=0.64, Dist=2500.0, Age=7.0 |
| Piskunov et al. (2008) | E(B-V)=0.61, Dist=2160, logt=7.21, logMA=1.926 |
| Kharchenko et al. (2012) | e_bv=0.583, distance=2304, log_age=6.74 |
| Loktin & Popova (2017) | E(B-V)=0.622, Dist=2183, logt=6.988 |
| Cantat-Gaudin et al. (2018) | dmode=2727.9 |
| Cantat-Gaudin et al. (2020) | AVNN=1.67, DistPc=2503.0, AgeNN=7.58 |
| Dias et al. (2021) | Av=1.919, Dist=2519, logage=7.144, [Fe/H]=0.096 |
| Rain et al. (2021) | E(B-V)=0.64, Dist=2727.9, log(Age)=7.0, NBSS=0 |
| Jaehnig et al. (2021) | dmode=2.708 |
| Hunt & Reffert (2023) | AV50=1.806, diffAV50=1.016, MOD50=12.099, logAge50=7.302 |
| Cavallo et al. (2024) | AV50=1.91, dMod50=12.28, logAge50=7.25, [Fe/H]50=0.45 |
| Hunt & Reffert (2024) | MassJ=1258.61, MassTot=1266.59 |
| Almeida et al. (2025) | AV=1.919, Dist=2519, logAge=7.144, MassRk=393.6 |
Search coordinates in Bayestar19