HSC 87
0.56
UTI
0.3
CN
1.0
Cdens
1.0
CC3
0.25
Clit
1.0
Cdup
Radius (P>50% members)
7.2 [arcmin]
- CN 0.3 Poorly populated
- Cdens 1.0 Very dense
- CC3 1.0 Very high quality
- Clit 0.25 Poorly studied
- Cdup 1.0 Unique
Overview
HSC 87 is a poorly populated, very dense object of very high C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It was recently reported in the literature.
Relatively close
Moderate extinction
Near-solar metallicity
Intermediate age
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 272.564 | -25.064 | 0.884 | 1.501 | 0.503 | 33.846 |
| Hu & Soubiran | 2025 | 272.567 | -25.045 | â | â | â | â |
| Hunt & Reffert | 2024 | 272.505 | -25.091 | 0.862 | 1.498 | 0.523 | 20.869 |
| Cavallo et al. | 2024 | 272.567 | -25.045 | 0.862 | â | â | â |
| Hunt & Reffert | 2023 | 272.505 | -25.091 | 0.862 | 1.498 | 0.523 | 20.869 |
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 |
|---|---|---|---|---|---|---|---|---|---|
| Hu & Soubiran | 2025 | â | â | â | â | -0.230* | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 155* | â | â |
| Cavallo et al. | 2024 | 1.27 | 1.65 | â | 1000 | -0.730 | â | â | â |
| Hunt & Reffert | 2023 | 1.09 | 0.79 | 0.42 | 137 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.