HSC 87
0.56
UTI
0.3
CN
1.0
Cdens
1.0
CC3
0.25
Clit
1.0
Cdup
Stellar density (N50/rad)
5.3 [N/pc2]
- 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
đĨ Members
đ Colab
đŦ Bayestar19
MOCA
đ CDS
đ Simbad
đ CDS (Îą, δ)
đ Simbad (Îą, δ)
MOCA
đ CDS
đ Simbad
đ CDS (Îą, δ)
đ Simbad (Îą, δ)
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 age and metallicity parameters (see Parameters). It was recently reported in the literature.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 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] | Bfrac | BSS |
|---|---|---|---|---|---|---|---|---|---|
| UCC | 99999â | 1.18 | 1.22 | 0.42 | 568 | -0.480 | 155 | â | â |
| Hu & Soubiran | 2025 | â | â | â | â | -0.230(5) | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 155(1) | 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 |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Cavallo et al. (2024)
Gold sample.