Alessi 12
(LeDrew 2; MWSC 3404; FoF 2391)
Summary
Alessi 12 is a rich, very dense object of very high C3 quality. It is located at a close 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) | 310.95 | 23.792 | – | 4.33 | -5.35 | -26.0 |
| Alessi et al. (2003) | 310.827 | 23.775 | – | 4.3 | -5.3 | – |
| Piskunov et al. (2007) | 310.873 | 23.777 | – | – | – | – |
| Piskunov et al. (2008) | 310.873 | 23.777 | – | – | – | – |
| Kharchenko et al. (2012) | 310.845 | 23.785 | – | 3.33 | -5.28 | – |
| Loktin & Popova (2017) | 310.95 | 23.792 | – | 4.33 | -5.35 | -26.0 |
| Cantat-Gaudin et al. (2018) | 310.875 | 23.871 | 1.816 | 4.303 | -4.639 | – |
| Bica et al. (2019) | 310.873 | 23.777 | – | – | – | – |
| Soubiran et al. (2018) | 310.875 | 23.871 | – | – | – | 2.43 |
| Bossini et al. (2019) | 310.875 | 23.871 | – | – | – | – |
| Liu & Pang (2019) | 310.945 | 23.859 | 1.828 | 4.358 | -4.645 | – |
| Cantat-Gaudin et al. (2020) | 310.875 | 23.871 | 1.816 | 4.303 | -4.639 | – |
| Dias et al. (2021) | 310.903 | 23.897 | 1.825 | 4.329 | -4.648 | -3.374 |
| Tarricq et al. (2022) | 310.771 | 23.978 | 1.824 | 4.333 | -4.701 | – |
| He et al. (2022) | 310.911 | 23.797 | 1.837 | 4.315 | -4.701 | – |
| Cordoni et al. (2023) | 310.903 | 23.897 | 1.825 | 4.329 | -4.648 | – |
| Hunt & Reffert (2023) | 310.871 | 23.538 | 1.843 | 4.277 | -4.702 | 1.244 |
| Cavallo et al. (2024) | 310.902 | 23.873 | 1.834 | – | – | – |
| Hunt & Reffert (2024) | 310.871 | 23.538 | 1.843 | 4.277 | -4.702 | 1.244 |
| Alfonso et al. (2024) | 310.848 | 23.833 | 1.801 | 4.273 | -4.677 | – |
| Almeida et al. (2025) | 310.903 | 23.897 | – | – | – | – |
| UCC | 310.883 | 23.786 | 1.838 | 4.317 | -4.702 | 1.659 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Dias et al. (2002) | E(B-V)=0.08, Dist=537.0, Age=8.1 |
| Alessi et al. (2003) | E(B-V)=0.08, d_pc=540.0, logt=8.1 |
| Piskunov et al. (2007) | E(B-V)=0.08, Dist=537, logt=7.9, logM=2.415 |
| Piskunov et al. (2008) | E(B-V)=0.08, Dist=537, logt=7.9, logM=2.736, logMA=2.567 |
| Kharchenko et al. (2012) | e_bv=0.079, distance=543, log_age=7.46 |
| Loktin & Popova (2017) | E(B-V)=0.175, Dist=1108, logt=8.377 |
| Cantat-Gaudin et al. (2018) | dmode=542.0 |
| Soubiran et al. (2018) | dmode=542.0 |
| Bossini et al. (2019) | AV=0.215, Dist=8.491, logA=8.089, Fe/H=0.0 |
| Liu & Pang (2019) | Age=0.083, Z=0.0 |
| Cantat-Gaudin et al. (2020) | AVNN=0.1, DistPc=544.0, AgeNN=8.13 |
| Dias et al. (2021) | Av=0.248, Dist=539, logage=8.195, [Fe/H]=-0.023 |
| Tarricq et al. (2022) | Dist=537, logAgeNN=8.14 |
| He et al. (2022) | A0=0.35, logAge=7.9 |
| Cordoni et al. (2023) | Av=0.248, Dist=8.658, logAge=8.195, [Fe/H]=-0.023, mass-single=526.082, fbin-tot=0.229, fbss-MS=0.0 |
| Hunt & Reffert (2023) | AV50=0.137, diffAV50=0.916, MOD50=8.59, logAge50=8.086 |
| Cavallo et al. (2024) | AV50=0.47, dMod50=8.75, logAge50=7.87, [Fe/H]50=0.04 |
| Hunt & Reffert (2024) | MassJ=470.992, MassTot=609.347 |
| Alfonso et al. (2024) | AV=0.10352, MOD=8.60211, logAge=8.12242, Z=-0.0201 |
| Almeida et al. (2025) | AV=0.248, Dist=539, logAge=8.195, MassRk=416.1 |
Search coordinates in Bayestar19