HSC 1860
0.41
UTI
0.51
CN
0.3
Cdens
0.75
CC3
0.25
Clit
1.0
Cdup
Radius (P>50% members)
2.7 [arcmin]
- CN 0.51 Moderately populated
- Cdens 0.3 Loose
- CC3 0.75 High quality
- Clit 0.25 Poorly studied
- Cdup 1.0 Unique
Overview
HSC 1860 is a moderately populated, loose object of high C3 quality. Its parallax locates it at a large* distance, well below the mid-plane, affected by low extinction. It is catalogued as a metal-poor, intermediate-age cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It was recently reported in the literature.
(*): The parallax distance estimate (~7.53 kpc) differs significantly from the median photometric distance (~5.30 kpc).
Note: This object shares a large percentage of members with a later reported entry. See table with shared members information.
Very distant
Low 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 | 104.278 | -23.565 | 0.133 | -0.42 | 2.0 | 72.602 |
| Hu & Soubiran | 2025 | 104.287 | -23.576 | â | â | â | â |
| Hunt & Reffert | 2024 | 104.284 | -23.573 | 0.128 | -0.42 | 1.972 | 72.601 |
| Cavallo et al. | 2024 | 104.287 | -23.576 | 0.13 | â | â | â |
| Hunt & Reffert | 2023 | 104.284 | -23.573 | 0.128 | -0.42 | 1.972 | 72.601 |
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 | -0.390* | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 254* | â | â |
| Cavallo et al. | 2024 | 3.60 | 0.62 | â | 1000 | -0.860 | â | â | â |
| Hunt & Reffert | 2023 | 7.01 | 0.41 | 1.63 | 690 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.