Alessi 3
(MWSC 1157; FoF 2434; OCSN 137)
Summary
Alessi 3 is a rich, very dense object of very high C3 quality. It is located at a very 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) | 109.121 | -46.685 | – | -11.49 | 12.37 | 20.0 |
| Alessi et al. (2003) | 109.1 | -46.6 | – | -11.5 | 12.4 | – |
| Piskunov et al. (2007) | 109.086 | -46.61 | – | – | – | – |
| Piskunov et al. (2008) | 109.086 | -46.61 | – | – | – | – |
| Kharchenko et al. (2012) | 109.05 | -46.617 | – | -11.09 | 12.72 | – |
| Loktin & Popova (2017) | 109.125 | -46.685 | – | -1.203 | 5.537 | 20.0 |
| Angelo et al. (2019) | 109.138 | -46.675 | – | – | – | – |
| Cantat-Gaudin et al. (2018) | 109.275 | -46.142 | 3.566 | -9.875 | 11.958 | – |
| Bica et al. (2019) | 109.086 | -46.61 | – | – | – | – |
| Soubiran et al. (2018) | 109.275 | -46.142 | – | – | – | 0.2 |
| Liu & Pang (2019) | 108.974 | -46.05 | 3.558 | -9.829 | 11.977 | – |
| Cantat-Gaudin et al. (2020) | 109.275 | -46.142 | 3.566 | -9.875 | 11.958 | – |
| Dias et al. (2021) | 109.7 | -46.026 | 3.559 | -9.872 | 12.014 | 2.314 |
| Tarricq et al. (2022) | 109.341 | -46.348 | 3.619 | -9.774 | 11.954 | – |
| He et al. (2022) | 109.09 | -46.308 | 3.611 | -9.82 | 11.958 | – |
| Qin et al. (2023) | 109.18 | -46.3 | 3.59 | -9.72 | 11.92 | 0.58 |
| Hunt & Reffert (2023) | 109.187 | -46.68 | 3.575 | -9.793 | 11.916 | 0.317 |
| Cavallo et al. (2024) | 109.175 | -46.154 | 3.575 | – | – | – |
| Hunt & Reffert (2024) | 109.187 | -46.68 | 3.575 | -9.793 | 11.916 | 0.317 |
| Alfonso et al. (2024) | 109.291 | -46.194 | 3.562 | -9.852 | 11.847 | – |
| Almeida et al. (2025) | 109.7 | -46.026 | – | – | – | – |
| UCC | 109.169 | -46.255 | 3.573 | -9.817 | 11.954 | 0.451 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Dias et al. (2002) | E(B-V)=0.11, Dist=288.0, Age=8.7, [Fe/H]=-0.275 |
| Alessi et al. (2003) | E(B-V)=0.11, d_pc=290.0, logt=8.7 |
| Piskunov et al. (2007) | E(B-V)=0.11, Dist=288, logt=8.87, logM=1.496 |
| Piskunov et al. (2008) | E(B-V)=0.11, Dist=288, logt=8.87, logM=1.718, logMA=1.57 |
| Kharchenko et al. (2012) | e_bv=0.11, distance=311, log_age=8.87, metallicity=-0.275 |
| Loktin & Popova (2017) | E(B-V)=0.098, Dist=430, logt=8.859 |
| Angelo et al. (2019) | dsun=0.26, Age=0.63, Mphot=18 |
| Cantat-Gaudin et al. (2018) | dmode=278.1 |
| Soubiran et al. (2018) | dmode=278.1 |
| Liu & Pang (2019) | Age=0.437, Z=0.25 |
| Cantat-Gaudin et al. (2020) | AVNN=0.14, DistPc=297.0, AgeNN=8.8 |
| Dias et al. (2021) | Av=0.178, Dist=278, logage=8.902, [Fe/H]=-0.057 |
| Tarricq et al. (2022) | Dist=295, logAgeNN=8.8 |
| He et al. (2022) | A0=0.5, logAge=8.6 |
| Qin et al. (2023) | E(B-V)=0.02, m-M=7.18, logt=8.95 |
| Hunt & Reffert (2023) | AV50=0.108, diffAV50=0.435, MOD50=7.142, logAge50=8.796 |
| Cavallo et al. (2024) | AV50=0.32, dMod50=7.28, logAge50=8.63, [Fe/H]50=0.44 |
| Hunt & Reffert (2024) | MassJ=58.9422, MassTot=130.630 |
| Alfonso et al. (2024) | AV=0.14054, MOD=7.36883, logAge=8.85758, Z=-0.0556 |
| Almeida et al. (2025) | AV=0.178, Dist=278, logAge=8.902, MassRk=121.6 |
Search coordinates in Bayestar19