SAI 25
(MWSC 250)
Summary
SAI 25 is a sparse, very loose object of low C3 quality. It is located at a moderate distance from the Sun, near the mid-plane. It is very well-studied in the literature.
This object shares a moderate percentage of members with 2 later reported entries.
Warning: contains less than 25 stars with P>0.5 estimated.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Dias et al. (2002) | 45.112 | 57.267 | – | -2.19 | 2.82 | – |
| Glushkova et al. (2010) | 45.111 | 57.267 | – | – | – | – |
| Kharchenko et al. (2012) | 45.097 | 57.285 | – | 2.04 | 1.94 | – |
| Kharchenko et al. (2013) | 45.097 | 57.285 | – | 2.04 | 1.94 | – |
| Kharchenko et al. (2016) | 45.086 | 57.283 | – | – | – | – |
| Loktin & Popova (2017) | 45.105 | 57.267 | – | 2.117 | -0.598 | – |
| Cantat-Gaudin et al. (2018) | 45.109 | 57.307 | 0.372 | 0.608 | -1.205 | – |
| Bica et al. (2019) | 45.116 | 57.268 | – | – | – | – |
| Soubiran et al. (2018) | 45.109 | 57.307 | – | – | – | -66.26 |
| Cantat-Gaudin et al. (2020) | 45.109 | 57.307 | 0.372 | 0.608 | -1.205 | – |
| Dias et al. (2021) | 45.108 | 57.335 | 0.322 | 0.441 | -1.075 | – |
| Just et al. (2023) | 45.086 | 57.283 | – | – | – | – |
| Hunt & Reffert (2023) | 45.071 | 57.479 | 0.41 | 0.649 | -1.265 | -13.889 |
| Cavallo et al. (2024) | 44.99 | 57.67 | 0.41 | – | – | – |
| Celli et al. (2024) | 45.109 | 57.307 | – | – | – | – |
| Hunt & Reffert (2024) | 45.071 | 57.479 | 0.41 | 0.649 | -1.265 | -13.889 |
| Almeida et al. (2025) | 45.108 | 57.335 | – | – | – | – |
| UCC | 44.979 | 57.414 | 0.389 | 0.62 | -1.278 | -33.843 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Dias et al. (2002) | E(B-V)=0.84, Dist=2290.0, Age=9.15 |
| Glushkova et al. (2010) | E(B-V)=0.84, Dist=2290.0, Age=9.15 |
| Kharchenko et al. (2012) | E(B-V)=0.97, d=2300.0, logt=9.185 |
| Kharchenko et al. (2013) | E(B-V)=0.97, d=2300.0, logt=9.185 |
| Kharchenko et al. (2016) | E(B-V)=0.97, d=2300.0, logt=9.185 |
| Loktin & Popova (2017) | E(B-V)=1.255, Dist=1116, logt=8.83 |
| Cantat-Gaudin et al. (2018) | dmode=2494.3 |
| Soubiran et al. (2018) | dmode=2494.3 |
| Cantat-Gaudin et al. (2020) | AVNN=4.24, DistPc=2651.0, AgeNN=6.2 |
| Dias et al. (2021) | Av=3.311, Dist=1497, logage=8.457, [Fe/H]=0.27 |
| Just et al. (2023) | logt=9.185, logmt=2.311 |
| Hunt & Reffert (2023) | AV50=3.393, diffAV50=2.699, MOD50=11.773, logAge50=7.271 |
| Cavallo et al. (2024) | AV50=3.23, dMod50=12.26, logAge50=7.6, [Fe/H]50=0.95 |
| Celli et al. (2024) | Age=1.6, Mc=490.5 |
| Hunt & Reffert (2024) | MassJ=1395.69, MassTot=1633.68 |
| Almeida et al. (2025) | AV=3.311, Dist=1497, logAge=8.457, MassRk=244.7 |
Search coordinates in Bayestar19
Cluster region map
Objects with shared members
| Cluster | % | RA | DEC | Plx | pmRA | pmDE | Rv | UTI |
|---|---|---|---|---|---|---|---|---|
| OC 0259 | 36.0 | 45.08 | 57.47 | 0.42 | 0.69 | -1.31 | -93.05 | 0.2 |
| OC 0258 | 4.0 | 44.72 | 57.69 | 0.42 | 0.6 | -1.26 | 17.28 | 0.13 |