Pismis 21
(MWSC 2283)
0.81
UTI
0.76
CN
1.0
Cdens
1.0
CC3
0.65
Clit
1.0
Cdup
Stellar density (N50/rad)
47.2 [N/pc2]
- CN 0.76 Rich
- Cdens 1.0 Very dense
- CC3 1.0 Very high quality
- Clit 0.65 Moderately studied
- Cdup 1.0 Unique
π₯ Members
π Colab
π¬ Bayestar19
MOCA
π CDS
π Simbad
π CDS (Ξ±, Ξ΄)
π Simbad (Ξ±, Ξ΄)
MOCA
π CDS
π Simbad
π CDS (Ξ±, Ξ΄)
π Simbad (Ξ±, Ξ΄)
Overview
Pismis 21 is a rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age and mass parameters (see Parameters). It is moderately studied in the literature.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999β | 229.198 | -59.66 | 0.303 | -4.189 | -3.777 | -21.439 |
| Hunt & Reffert | 2024 | 229.194 | -59.66 | 0.31 | -4.199 | -3.766 | -10.16 |
| Cavallo et al. | 2024 | 229.194 | -59.659 | 0.31 | β | β | β |
| Hunt & Reffert | 2023 | 229.194 | -59.66 | 0.31 | -4.199 | -3.766 | -10.16 |
| Just et al. | 2023 | 229.173 | -59.653 | β | β | β | β |
| Richer et al. | 2021 | 229.187 | -59.658 | 0.307 | -4.152 | -3.743 | β |
| Cantat-Gaudin et al. | 2020 | 229.199 | -59.659 | 0.29 | -4.143 | -3.761 | β |
| SΓ‘nchez et al. | 2020 | 229.204 | -59.667 | β | -4.186 | -3.673 | β |
| Cantat-Gaudin & Anders | 2020 | 229.199 | -59.659 | 0.29 | -4.143 | -3.761 | β |
| Cantat-Gaudin et al. | 2018 | 229.199 | -59.659 | 0.29 | -4.143 | -3.761 | β |
| Kharchenko et al. | 2016 | 229.173 | -59.653 | β | β | β | β |
| Dias et al. | 2014 | 229.204 | -59.667 | β | -4.58 | -4.45 | β |
| Kharchenko et al. | 2013 | 229.185 | -59.655 | β | -5.53 | -1.94 | -41.2 |
π‘ Note: The UCC values are estimated from its identified members.
| Reference | Year | Dist [kpc] | Av [mag] | DAv [mag] | Age [Myr] | [Fe/H] [dex] | Mass [Msun] | Bfrac | BSS |
|---|---|---|---|---|---|---|---|---|---|
| UCC | 99999β | 3.05 | 1.94 | 2.81 | 129 | 0.000 | 1186 | β | β |
| Hunt & Reffert | 2024 | β | β | β | β | β | 2335(1) | β | β |
| Cavallo et al. | 2024 | 3.84 | 4.25 | β | 9 | 0.000 | β | β | β |
| Hunt & Reffert | 2023 | 2.96 | 4.23 | 2.81 | 9 | β | β | β | β |
| Just et al. | 2023 | β | β | β | 129 | β | 37 | β | β |
| Richer et al. | 2021 | β | 1.90 | β | β | β | β | β | β |
| Cantat-Gaudin & Anders | 2020 | 3.14 | β | β | β | β | β | β | β |
| Cantat-Gaudin et al. | 2018 | 3.14 | β | β | β | β | β | β | β |
| Kharchenko et al. | 2016 | 1.17 | 1.94 | β | 129 | β | β | β | β |
| Kharchenko et al. | 2013 | 1.17 | 1.94 | β | 129 | β | β | β | β |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Palma et al. (2025)
Part of multiple system G234, along with Theia_3114 and Pismis_20.
Cavallo et al. (2024)
Silver sample.