Collinder 421
Summary
Collinder 421 is a rich, very dense object of very high C3 quality. It is located at a relatively close distance from the Sun, above the mid-plane. It is well-studied in the literature.
This object shares a very small percentage of members with at least one entry reported in the same catalogue.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Dias et al. (2002) | 305.792 | 41.693 | – | -3.61 | -11.58 | – |
| Piskunov et al. (2008) | 305.812 | 41.695 | – | – | – | – |
| Kharchenko et al. (2012) | 305.787 | 41.695 | – | -4.5 | -9.15 | – |
| Loktin & Popova (2017) | 305.79 | 41.693 | – | -0.624 | -1.576 | – |
| Cantat-Gaudin et al. (2020) | 305.829 | 41.701 | 0.813 | -3.651 | -8.334 | – |
| Dias et al. (2021) | 305.837 | 41.703 | 0.818 | -3.651 | -8.336 | 2.537 |
| Tarricq et al. (2022) | 305.818 | 41.7 | 0.824 | -3.642 | -8.362 | – |
| He et al. (2022) | 305.822 | 41.7 | 0.828 | -3.642 | -8.365 | – |
| Hunt & Reffert (2023) | 305.817 | 41.695 | 0.831 | -3.64 | -8.372 | 0.29 |
| Cavallo et al. (2024) | 305.843 | 41.666 | 0.828 | – | – | – |
| Hunt & Reffert (2024) | 305.817 | 41.695 | 0.831 | -3.64 | -8.372 | 0.29 |
| Almeida et al. (2025) | 305.837 | 41.703 | – | – | – | – |
| UCC | 305.829 | 41.693 | 0.825 | -3.639 | -8.366 | -0.088 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Dias et al. (2002) | E(B-V)=0.64, Dist=1050.0, Age=8.4 |
| Piskunov et al. (2008) | E(B-V)=0.1, Dist=950, logt=9.06, logMA=1.295 |
| Kharchenko et al. (2012) | e_bv=0.312, distance=758, log_age=9.08 |
| Loktin & Popova (2017) | E(B-V)=0.923, Dist=2145, logt=8.15 |
| Cantat-Gaudin et al. (2020) | AVNN=1.69, DistPc=1214.0, AgeNN=8.37 |
| Dias et al. (2021) | Av=2.485, Dist=1141, logage=7.541, [Fe/H]=-0.063 |
| Tarricq et al. (2022) | Dist=1167, logAgeNN=8.36 |
| He et al. (2022) | A0=2.8, logAge=8.05 |
| Hunt & Reffert (2023) | AV50=2.358, diffAV50=2.536, MOD50=10.352, logAge50=8.084 |
| Cavallo et al. (2024) | AV50=2.39, dMod50=10.58, logAge50=8.17, [Fe/H]50=0.5 |
| Hunt & Reffert (2024) | MassJ=1359.93, MassTot=1389.90 |
| Almeida et al. (2025) | AV=2.485, Dist=1141, logAge=7.541, MassRk=598.2 |
Search coordinates in Bayestar19
Cluster region map
Objects with shared members
| Cluster | % | RA | DEC | Plx | pmRA | pmDE | Rv | UTI |
|---|---|---|---|---|---|---|---|---|
| UBC 142 | 100.0 | 305.83 | 41.69 | 0.82 | -3.64 | -8.36 | 0.77 | 0.06 |
| Dolidze 9 | 6.7 | 306.19 | 41.94 | 0.82 | -3.68 | -8.32 | -2.61 | 0.36 |