ASCC 21
(OCSN 129)
Summary
ASCC 21 is a rich, very dense object of very high C3 quality. It is located at a very close distance from the Sun, below the mid-plane. It is very well-studied in the literature.
This object shares a small percentage of members with 3 later reported entries.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Piskunov et al. (2007) | 82.236 | 3.646 | – | – | – | – |
| Piskunov et al. (2008) | 82.236 | 3.646 | – | – | – | – |
| Cantat-Gaudin et al. (2018) | 82.179 | 3.527 | 2.866 | 1.404 | -0.632 | – |
| Soubiran et al. (2018) | 82.179 | 3.527 | – | – | – | 18.7 |
| Bossini et al. (2019) | 82.179 | 3.527 | – | – | – | – |
| Dias et al. (2019) | 82.179 | 3.527 | 2.866 | 1.404 | -0.632 | 16.034 |
| Donor et al. (2020) | 82.26 | 3.56 | – | 1.28 | -0.29 | 20.0 |
| Cantat-Gaudin et al. (2020) | 82.179 | 3.527 | 2.866 | 1.404 | -0.632 | – |
| Dias et al. (2021) | 82.142 | 3.477 | 2.893 | 1.381 | -0.61 | 15.313 |
| Qin et al. (2023) | 82.15 | 3.58 | 2.91 | 1.48 | -0.6 | 16.95 |
| Hunt & Reffert (2023) | 82.212 | 3.607 | 2.902 | 1.532 | -0.576 | 10.168 |
| Cavallo et al. (2024) | 82.364 | 3.309 | 2.902 | – | – | – |
| Celli et al. (2024) | 82.179 | 3.527 | – | – | – | – |
| Hunt & Reffert (2024) | 82.212 | 3.607 | 2.902 | 1.532 | -0.576 | 10.168 |
| Alfonso et al. (2024) | 81.835 | 2.466 | 2.844 | 1.436 | -0.307 | – |
| Almeida et al. (2025) | 82.142 | 3.477 | – | – | – | – |
| UCC | 82.229 | 3.545 | 2.893 | 1.456 | -0.613 | 15.495 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Piskunov et al. (2007) | E(B-V)=0.03, Dist=500, logt=7.11, logM=2.746 |
| Piskunov et al. (2008) | E(B-V)=0.03, Dist=500, logt=7.11, logM=3.042, logMA=2.93 |
| Cantat-Gaudin et al. (2018) | dmode=345.5 |
| Soubiran et al. (2018) | dmode=345.5 |
| Bossini et al. (2019) | AV=0.118, Dist=7.425, logA=7.032, Fe/H=0.0 |
| Dias et al. (2019) | E(B-V)=0.05, Dist=353, logAge=7.09, Z=0.018 |
| Donor et al. (2020) | Fe/H=-0.18 |
| Cantat-Gaudin et al. (2020) | AVNN=0.1, DistPc=341.0, AgeNN=6.95 |
| Dias et al. (2021) | Av=0.236, Dist=343, logage=7.102, [Fe/H]=-0.008 |
| Qin et al. (2023) | E(B-V)=0.11, m-M=7.97, logt=6.95 |
| Hunt & Reffert (2023) | AV50=0.138, diffAV50=0.704, MOD50=7.612, logAge50=6.839 |
| Cavallo et al. (2024) | AV50=0.59, dMod50=7.67, logAge50=6.85, [Fe/H]50=0.07 |
| Celli et al. (2024) | Age=8.9, Mc=45.6 |
| Hunt & Reffert (2024) | MassJ=62.7181, MassTot=73.5487 |
| Alfonso et al. (2024) | AV=0.09963, MOD=7.65981, logAge=6.98606, Z=-0.0082 |
| Almeida et al. (2025) | AV=0.236, Dist=343, logAge=7.102, MassRk=105.8 |
Search coordinates in Bayestar19
Cluster region map
Objects with shared members
| Cluster | % | RA | DEC | Plx | pmRA | pmDE | Rv | UTI |
|---|---|---|---|---|---|---|---|---|
| OC 0327 | 18.8 | 82.03 | 3.76 | 2.91 | 1.33 | -0.6 | 15.19 | 0.03 |
| OC 0331 | 16.9 | 82.43 | 3.56 | 2.91 | 1.51 | -0.62 | 13.92 | 0.0 |
| OC 0329 | 16.2 | 81.92 | 3.65 | 2.91 | 1.45 | -0.6 | 15.19 | 0.01 |