Alessi 1
(Casado Alessi 1; MWSC 88; CA 1; LeDrew 1)
Summary
Alessi 1 is a moderately populated, 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) | 13.363 | 49.567 | – | 6.74 | -7.79 | 6.0 |
| Alessi et al. (2003) | 13.25 | 49.55 | – | 6.7 | -7.8 | – |
| Kharchenko et al. (2005) | 13.36 | 49.57 | – | 6.51 | -7.7 | – |
| Piskunov et al. (2007) | 13.352 | 49.571 | – | – | – | – |
| Kharchenko et al. (2007) | 13.36 | 49.57 | – | 0.45 | – | 6.0 |
| Piskunov et al. (2008) | 13.352 | 49.571 | – | – | – | – |
| Kharchenko et al. (2012) | 13.327 | 49.48 | – | 6.13 | -7.53 | 6.0 |
| Kharchenko et al. (2013) | 13.327 | 49.48 | – | 6.13 | -7.53 | 6.0 |
| Kharchenko et al. (2016) | 13.318 | 49.477 | – | – | – | – |
| Loktin & Popova (2017) | 13.26 | 49.765 | – | 0.857 | -4.489 | 6.0 |
| Cantat-Gaudin et al. (2018) | 13.343 | 49.536 | 1.39 | 6.536 | -6.245 | – |
| Bica et al. (2019) | 13.367 | 49.57 | – | – | – | – |
| Soubiran et al. (2018) | 13.343 | 49.536 | – | – | – | -3.73 |
| Bossini et al. (2019) | 13.343 | 49.536 | – | – | – | – |
| Cantat-Gaudin et al. (2020) | 13.343 | 49.536 | 1.39 | 6.536 | -6.245 | – |
| Dias et al. (2021) | 13.319 | 49.536 | 1.394 | 6.548 | -6.27 | -3.343 |
| Tarricq et al. (2022) | 13.283 | 49.516 | 1.424 | 6.48 | -6.435 | – |
| He et al. (2022) | 13.356 | 49.511 | 1.411 | 6.476 | -6.42 | – |
| Just et al. (2023) | 13.318 | 49.477 | – | – | – | – |
| Hunt & Reffert (2023) | 13.355 | 49.548 | 1.41 | 6.47 | -6.402 | -5.191 |
| Cavallo et al. (2024) | 13.486 | 49.518 | 1.409 | – | – | – |
| Hunt & Reffert (2024) | 13.355 | 49.548 | 1.41 | 6.47 | -6.402 | -5.191 |
| Zhang et al. (2024) | 13.355 | 49.548 | – | – | – | – |
| Alfonso et al. (2024) | 13.441 | 49.442 | 1.36 | 6.369 | -6.024 | – |
| Almeida et al. (2025) | 13.319 | 49.536 | – | – | – | – |
| Hu & Soubiran (2025) | 13.486 | 49.518 | – | – | – | – |
| UCC | 13.336 | 49.551 | 1.411 | 6.484 | -6.391 | -4.284 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Dias et al. (2002) | E(B-V)=0.09, Dist=302.0, Age=8.2 |
| Kharchenko et al. (2005) | E(B-V)=0.1, Dist=800, logt=8.85 |
| Piskunov et al. (2007) | E(B-V)=0.1, Dist=800, logt=8.85, logM=2.39 |
| Piskunov et al. (2008) | E(B-V)=0.1, Dist=800, logt=8.85, logM=2.791, logMA=2.512 |
| Kharchenko et al. (2012) | E(B-V)=0.1, d=750.0, logt=8.84 |
| Kharchenko et al. (2013) | E(B-V)=0.1, d=750.0, logt=8.84 |
| Kharchenko et al. (2016) | E(B-V)=0.1, d=750.0, logt=8.84 |
| Loktin & Popova (2017) | E(B-V)=0.082, Dist=396, logt=8.334 |
| Cantat-Gaudin et al. (2018) | dmode=704.8 |
| Soubiran et al. (2018) | dmode=704.8 |
| Bossini et al. (2019) | AV=0.322, Dist=9.255, logA=8.935, Fe/H=0.0 |
| Cantat-Gaudin et al. (2020) | AVNN=0.08, DistPc=689.0, AgeNN=9.16 |
| Dias et al. (2021) | Av=0.416, Dist=681, logage=8.993, [Fe/H]=-0.109 |
| Tarricq et al. (2022) | Dist=680, logAgeNN=9.18 |
| He et al. (2022) | A0=0.6, logAge=8.7 |
| Just et al. (2023) | logt=8.84, logmt=2.134 |
| Hunt & Reffert (2023) | AV50=0.206, diffAV50=0.673, MOD50=9.114, logAge50=8.874 |
| Cavallo et al. (2024) | AV50=0.49, dMod50=9.14, logAge50=8.9, [Fe/H]50=0.14 |
| Hunt & Reffert (2024) | MassJ=61.3217, MassTot=230.774 |
| Zhang et al. (2024) | [Fe/H]ANN=-0.0589, [Fe/H]MCMC=-0.0333 |
| Alfonso et al. (2024) | AV=0.08095, MOD=9.18952, logAge=9.06180, Z=-0.1084 |
| Almeida et al. (2025) | AV=0.416, Dist=681, logAge=8.993, MassRk=86.7 |
| Hu & Soubiran (2025) | MA22=-0.19, MA23f=-0.09, MA23g=-0.03, MZ23=0.0, MK24=-0.09, MF24=-0.03 |
Search coordinates in Bayestar19