Pismis 18
Summary
Pismis 18 is a rich, very dense object of very high 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 very small percentage of members with a later reported entry.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Dias et al. (2002) | 204.229 | -62.093 | – | -2.43 | -5.11 | -27.9 |
| Kharchenko et al. (2012) | 204.232 | -62.065 | – | -8.25 | -1.7 | – |
| Cantat-Gaudin et al. (2018) | 204.227 | -62.091 | 0.332 | -5.658 | -2.286 | – |
| Soubiran et al. (2018) | 204.227 | -62.091 | – | – | – | -28.45 |
| Cantat-Gaudin et al. (2020) | 204.227 | -62.091 | 0.332 | -5.658 | -2.286 | – |
| Dias et al. (2021) | 204.232 | -62.096 | 0.328 | -5.672 | -2.296 | -28.04 |
| Rain et al. (2021) | 204.227 | -62.091 | 0.332 | -5.658 | -2.286 | – |
| Jaehnig et al. (2021) | 204.227 | -62.091 | 0.356 | -5.66 | -2.272 | – |
| Hunt & Reffert (2023) | 204.227 | -62.091 | 0.347 | -5.692 | -2.269 | -27.593 |
| Cavallo et al. (2024) | 204.213 | -62.095 | 0.347 | – | – | – |
| Hunt & Reffert (2024) | 204.227 | -62.091 | 0.347 | -5.692 | -2.269 | -27.593 |
| Almeida et al. (2025) | 204.232 | -62.096 | – | – | – | – |
| Hu & Soubiran (2025) | 204.213 | -62.095 | – | – | – | – |
| UCC | 204.23 | -62.091 | 0.347 | -5.695 | -2.27 | -28.578 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Dias et al. (2002) | E(B-V)=0.5, Dist=2240.0, Age=9.08 |
| Kharchenko et al. (2012) | e_bv=0.521, distance=2309, log_age=8.975 |
| Cantat-Gaudin et al. (2018) | dmode=2768.6 |
| Soubiran et al. (2018) | dmode=2768.6 |
| Cantat-Gaudin et al. (2020) | AVNN=1.81, DistPc=2860.0, AgeNN=8.76 |
| Dias et al. (2021) | Av=2.165, Dist=2189, logage=8.832, [Fe/H]=-0.033 |
| Rain et al. (2021) | E(B-V)=0.5, Dist=2768.6, log(Age)=9.08, NBSS=0 |
| Jaehnig et al. (2021) | dmode=2.776 |
| Hunt & Reffert (2023) | AV50=2.398, diffAV50=1.217, MOD50=12.13, logAge50=8.509 |
| Cavallo et al. (2024) | AV50=2.03, dMod50=11.6, logAge50=9.0, [Fe/H]50=0.12 |
| Hunt & Reffert (2024) | MassJ=3542.80, MassTot=3542.80 |
| Almeida et al. (2025) | AV=2.165, Dist=2189, logAge=8.832, MassRk=1608.9 |
| Hu & Soubiran (2025) | MA22=-0.25, MA23f=-0.25, MA23g=0.14, MZ23=-0.37, MK24=-0.18, MF24=-0.29 |
Search coordinates in Bayestar19
Cluster region map
Objects with shared members
| Cluster | % | RA | DEC | Plx | pmRA | pmDE | Rv | UTI |
|---|---|---|---|---|---|---|---|---|
| OC 0598 | 1.6 | 204.21 | -62.08 | 0.47 | -5.48 | -2.16 | -2.53 | 0.05 |