Koposov 12
(FSR 0802; MWSC 701; Alessi J0601.6+35b; MWSC 702)
Summary
Koposov 12 is a rich, very dense object of very high C3 quality. It is located at a moderate distance from the Sun, above the mid-plane. It is very well-studied in the literature.
This object shares a small percentage of members with 2 later reported entries.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Dias et al. (2002) | 90.233 | 35.277 | – | 0.44 | -1.82 | – |
| Froebrich et al. (2007) | 90.254 | 35.279 | – | – | – | – |
| Koposov et al. (2008) | 90.234 | 35.277 | – | – | – | – |
| Glushkova et al. (2010) | 90.234 | 35.277 | – | – | – | – |
| Kharchenko et al. (2012) | 90.261 | 35.277 | – | 0.92 | -1.8 | – |
| Kharchenko et al. (2013) | 90.261 | 35.277 | – | 0.92 | -1.8 | 13.6 |
| Kharchenko et al. (2016) | 90.251 | 35.277 | – | – | – | – |
| Cantat-Gaudin et al. (2018) | 90.245 | 35.287 | 0.396 | 0.699 | -1.732 | – |
| Bica et al. (2019) | 90.261 | 35.277 | – | – | – | – |
| Soubiran et al. (2018) | 90.245 | 35.287 | – | – | – | 20.31 |
| Bossini et al. (2019) | 90.245 | 35.287 | – | – | – | – |
| Cantat-Gaudin et al. (2020) | 90.245 | 35.287 | 0.396 | 0.699 | -1.732 | – |
| Dias et al. (2021) | 90.235 | 35.295 | 0.409 | 0.704 | -1.711 | – |
| Just et al. (2023) | 90.251 | 35.277 | – | – | – | – |
| Hunt & Reffert (2023) | 90.247 | 35.266 | 0.401 | 0.652 | -1.742 | 17.077 |
| Cavallo et al. (2024) | 90.249 | 35.301 | 0.401 | – | – | – |
| Hunt & Reffert (2024) | 90.247 | 35.266 | 0.401 | 0.652 | -1.742 | 17.077 |
| Zhang et al. (2024) | 90.247 | 35.266 | – | – | – | – |
| Almeida et al. (2025) | 90.235 | 35.295 | – | – | – | – |
| UCC | 90.25 | 35.291 | 0.394 | 0.648 | -1.743 | 19.666 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Dias et al. (2002) | E(B-V)=0.51, Dist=2000.0, Age=8.78 |
| Koposov et al. (2008) | E(B-V)=0.3, Distance=2050, Age=8.9 |
| Glushkova et al. (2010) | E(B-V)=0.3, Dist=2050.0, Age=8.9 |
| Kharchenko et al. (2012) | E(B-V)=0.45, d=1900.0, logt=8.91 |
| Kharchenko et al. (2013) | E(B-V)=0.45, d=1900.0, logt=8.91 |
| Kharchenko et al. (2016) | E(B-V)=0.45, d=1900.0, logt=8.91 |
| Cantat-Gaudin et al. (2018) | dmode=2351.2 |
| Soubiran et al. (2018) | dmode=2351.2 |
| Bossini et al. (2019) | AV=1.531, Dist=12.1, logA=8.542, Fe/H=0.0 |
| Cantat-Gaudin et al. (2020) | AVNN=1.43, DistPc=2461.0, AgeNN=8.59 |
| Dias et al. (2021) | Av=1.68, Dist=2060, logage=8.699, [Fe/H]=0.012 |
| Just et al. (2023) | logt=8.91, logmt=2.224 |
| Hunt & Reffert (2023) | AV50=1.573, diffAV50=0.974, MOD50=11.789, logAge50=8.448 |
| Cavallo et al. (2024) | AV50=1.58, dMod50=11.93, logAge50=8.62, [Fe/H]50=0.5 |
| Hunt & Reffert (2024) | MassJ=1702.45, MassTot=1702.45 |
| Zhang et al. (2024) | [Fe/H]ANN=-0.2745, [Fe/H]MCMC=-0.2677 |
| Almeida et al. (2025) | AV=1.68, Dist=2060, logAge=8.699, MassRk=506.3 |
Search coordinates in Bayestar19
Cluster region map
Objects with shared members
| Cluster | % | RA | DEC | Plx | pmRA | pmDE | Rv | UTI |
|---|---|---|---|---|---|---|---|---|
| UBC 1579 | 21.0 | 90.31 | 35.4 | 0.49 | 0.64 | -1.74 | 56.82 | 0.19 |
| Alessi J0601.6+3531 | 9.1 | 90.35 | 35.5 | 0.56 | 0.63 | -1.74 | 26.3 | 0.27 |