Alessi 44
(ASCC 106; MWSC 3164)
Summary
Alessi 44 is a sparse, very loose object of intermediate C3 quality. It is located at a close distance from the Sun, below the mid-plane. It is very well-studied in the literature.
This object shares a moderate percentage of members with a later reported entry.
Warning: contains less than 25 stars with P>0.5 estimated.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Dias et al. (2002) | 295.637 | 1.523 | – | -1.16 | -2.74 | -62.2 |
| Kharchenko et al. (2005) | 295.78 | 1.6 | – | -1.16 | -2.74 | – |
| Kharchenko et al. (2007) | 295.78 | 1.6 | – | 0.66 | – | -62.2 |
| Piskunov et al. (2008) | 295.777 | 1.596 | – | – | – | – |
| Kharchenko et al. (2013) | 295.83 | 1.62 | – | -1.9 | -2.9 | -62.2 |
| Kharchenko et al. (2016) | 295.823 | 1.618 | – | – | – | – |
| Loktin & Popova (2017) | 295.635 | 1.523 | – | -1.232 | -7.051 | -62.2 |
| Cantat-Gaudin et al. (2018) | 295.325 | 1.592 | 1.496 | 0.463 | -2.325 | – |
| Bica et al. (2019) | 295.638 | 1.525 | – | – | – | – |
| Soubiran et al. (2018) | 295.325 | 1.592 | – | – | – | -9.8 |
| Cantat-Gaudin et al. (2020) | 295.325 | 1.592 | 1.496 | 0.463 | -2.325 | – |
| Dias et al. (2021) | 295.286 | 1.494 | 1.505 | 0.491 | -2.327 | -9.767 |
| Just et al. (2023) | 295.823 | 1.618 | – | – | – | – |
| Hunt & Reffert (2023) | 295.792 | 1.563 | 1.327 | 0.81 | -2.493 | -15.384 |
| Cavallo et al. (2024) | 295.582 | 1.421 | 1.324 | – | – | – |
| Hunt & Reffert (2024) | 295.792 | 1.563 | 1.327 | 0.81 | -2.493 | -15.384 |
| Alfonso et al. (2024) | 294.958 | 1.349 | 1.465 | 0.486 | -2.438 | – |
| Almeida et al. (2025) | 295.286 | 1.494 | – | – | – | – |
| UCC | 294.825 | 1.765 | 1.524 | 0.399 | -2.272 | -13.059 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Dias et al. (2002) | E(B-V)=0.35, Dist=500.0, Age=8.42 |
| Kharchenko et al. (2005) | E(B-V)=0.35, Dist=500, logt=8.42 |
| Piskunov et al. (2008) | E(B-V)=0.35, Dist=500, logt=8.42, logMA=2.781 |
| Kharchenko et al. (2013) | E(B-V)=0.312, d=525.0, logt=8.42 |
| Kharchenko et al. (2016) | E(B-V)=0.312, d=525.0, logt=8.42 |
| Loktin & Popova (2017) | E(B-V)=0.564, Dist=648, logt=8.486 |
| Cantat-Gaudin et al. (2018) | dmode=655.6 |
| Soubiran et al. (2018) | dmode=655.6 |
| Cantat-Gaudin et al. (2020) | AVNN=0.71, DistPc=679.0, AgeNN=8.35 |
| Dias et al. (2021) | Av=1.075, Dist=668, logage=8.056, [Fe/H]=0.029 |
| Tarricq et al. (2022) | Dist=669, logAgeNN=8.35 |
| Just et al. (2023) | logt=8.42, logmt=1.933 |
| Hunt & Reffert (2023) | AV50=1.218, diffAV50=0.577, MOD50=9.3, logAge50=8.089 |
| Cavallo et al. (2024) | AV50=1.19, dMod50=9.4, logAge50=8.16, [Fe/H]50=0.5 |
| Hunt & Reffert (2024) | MassJ=73.1739, MassTot=122.464 |
| Alfonso et al. (2024) | AV=0.70934, MOD=9.15902, logAge=8.33891, Z=0.03006 |
| Almeida et al. (2025) | AV=1.075, Dist=668, logAge=8.056, MassRk=562.8 |
Search coordinates in Bayestar19
Cluster region map
Objects with shared members
| Cluster | % | RA | DEC | Plx | pmRA | pmDE | Rv | UTI |
|---|---|---|---|---|---|---|---|---|
| OC 0069 | 44.0 | 294.77 | 2.28 | 1.5 | 0.26 | -2.23 | -9.39 | 0.1 |