Alessi 40
(ASCC 97; MWSC 2963; FoF 2405)
Summary
Alessi 40 is a rich, very dense object of very high C3 quality. It is located at a close distance from the Sun, near the mid-plane. It is very well-studied in the literature.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Dias et al. (2002) | 279.146 | -19.465 | – | -2.09 | -6.21 | -16.31 |
| Kharchenko et al. (2005) | 279.24 | -19.22 | – | -2.09 | -6.21 | – |
| Piskunov et al. (2007) | 279.227 | -19.222 | – | – | – | – |
| Piskunov et al. (2008) | 279.227 | -19.222 | – | – | – | – |
| Kharchenko et al. (2013) | 279.225 | -19.22 | – | -0.7 | -5.94 | – |
| Kharchenko et al. (2016) | 279.217 | -19.222 | – | – | – | – |
| Loktin & Popova (2017) | 279.15 | -19.467 | – | 2.641 | -5.946 | -16.31 |
| Cantat-Gaudin et al. (2018) | 279.263 | -19.139 | 1.74 | -2.331 | -6.508 | – |
| Bica et al. (2019) | 279.146 | -19.462 | – | – | – | – |
| Soubiran et al. (2018) | 279.263 | -19.139 | – | – | – | -0.34 |
| Liu & Pang (2019) | 279.277 | -19.156 | 1.773 | -2.488 | -6.377 | – |
| Cantat-Gaudin et al. (2020) | 279.263 | -19.139 | 1.74 | -2.331 | -6.508 | – |
| Dias et al. (2021) | 279.3 | -19.155 | 1.731 | -2.245 | -6.497 | 6.079 |
| He et al. (2022) | 279.31 | -19.224 | 1.748 | -2.394 | -6.453 | – |
| Just et al. (2023) | 279.217 | -19.222 | – | – | – | – |
| Hunt & Reffert (2023) | 279.271 | -19.168 | 1.737 | -2.418 | -6.419 | -3.718 |
| Cavallo et al. (2024) | 279.32 | -19.18 | 1.737 | – | – | – |
| Hunt & Reffert (2024) | 279.271 | -19.168 | 1.737 | -2.418 | -6.419 | -3.718 |
| Alfonso et al. (2024) | 279.316 | -19.141 | 1.693 | -2.42 | -6.418 | – |
| Almeida et al. (2025) | 279.3 | -19.155 | – | – | – | – |
| UCC | 279.285 | -19.172 | 1.736 | -2.401 | -6.448 | -3.707 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Dias et al. (2002) | E(B-V)=0.4, Dist=800.0, Age=7.88, [Fe/H]=0.129 |
| Kharchenko et al. (2005) | E(B-V)=0.4, Dist=800, logt=7.88 |
| Piskunov et al. (2007) | E(B-V)=0.4, Dist=800, logt=7.88, logM=2.503 |
| Piskunov et al. (2008) | E(B-V)=0.4, Dist=800, logt=7.88, logM=3.046, logMA=2.859 |
| Kharchenko et al. (2013) | E(B-V)=0.437, d=591.0, logt=7.88, [Fe/H]=0.129 |
| Kharchenko et al. (2016) | E(B-V)=0.437, d=591.0, logt=7.88 |
| Loktin & Popova (2017) | E(B-V)=0.394, Dist=1457, logt=8.485 |
| Cantat-Gaudin et al. (2018) | dmode=565.4 |
| Soubiran et al. (2018) | dmode=565.4 |
| Liu & Pang (2019) | Age=0.059, Z=0.5 |
| Cantat-Gaudin et al. (2020) | AVNN=1.17, DistPc=598.0, AgeNN=8.05 |
| Dias et al. (2021) | Av=1.446, Dist=564, logage=8.228, [Fe/H]=0.106 |
| Tarricq et al. (2022) | Dist=589, logAgeNN=8.05 |
| He et al. (2022) | A0=1.55, logAge=7.9 |
| Just et al. (2023) | logt=7.88, logmt=1.665 |
| Hunt & Reffert (2023) | AV50=1.222, diffAV50=1.581, MOD50=8.669, logAge50=8.089 |
| Cavallo et al. (2024) | AV50=1.43, dMod50=8.81, logAge50=8.21, [Fe/H]50=0.2 |
| Hunt & Reffert (2024) | MassJ=615.282, MassTot=697.312 |
| Alfonso et al. (2024) | AV=1.16766, MOD=8.89076, logAge=7.94219, Z=0.10517 |
| Almeida et al. (2025) | AV=1.446, Dist=564, logAge=8.228, MassRk=81.9 |
Search coordinates in Bayestar19