HSC 20
0.37
UTI
0.0
CN
0.83
Cdens
1.0
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
2.7 [arcmin]
- CN 0.0 Sparse
- Cdens 0.83 Dense
- CC3 1.0 Very high quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
HSC 20 is a sparse, dense object of very high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by high extinction. It is catalogued as a metal-poor, intermediate-age cluster (see Parameters). It was recently reported in the literature.
Note: This object shares a large percentage of members with a later reported entry. See table with shared members information.
Relatively close
High extinction
Metal-poor
Intermediate age
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 265.559 | -26.102 | 0.342 | 0.541 | -0.192 | 15.202 |
| Hunt & Reffert | 2024 | 265.566 | -26.111 | 0.326 | 0.536 | -0.207 | -0.682 |
| Cavallo et al. | 2024 | 265.552 | -26.102 | 0.328 | â | â | â |
| Hunt & Reffert | 2023 | 265.566 | -26.111 | 0.326 | 0.536 | -0.207 | -0.682 |
đĄ 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] | Bfr | BSS |
|---|---|---|---|---|---|---|---|---|---|
| Hunt & Reffert | 2024 | â | â | â | â | â | 371* | â | â |
| Cavallo et al. | 2024 | 3.16 | 3.88 | â | 372 | -0.580 | â | â | â |
| Hunt & Reffert | 2023 | 2.81 | 3.88 | 0.89 | 169 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.