HSC 1865
0.01
UTI
0.8
CN
1.0
Cdens
1.0
CC3
0.25
Clit
0.01
Cdup
Radius (P>50% members)
15.6 [arcmin]
- CN 0.8 Rich
- Cdens 1.0 Very dense
- CC3 1.0 Very high quality
- Clit 0.25 Poorly studied
- Cdup 0.01 Very likely duplicate
Overview
HSC 1865 is a rich, very dense object of very high C3 quality. Its parallax locates it at a close distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, very young cluster (see Parameters). It was recently reported in the literature.
â ī¸ Warning: This is very likely a duplicate object, which shares a large percentage of members with at least one previously reported entry. See table with shared members information.
Close
Low extinction
Near-solar metallicity
Very young
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 103.6 | -24.216 | 1.121 | -2.812 | 3.519 | 37.369 |
| Wei et al. | 2025 | 103.637 | -24.216 | 1.146 | -2.809 | 3.522 | â |
| Hunt & Reffert | 2024 | 103.663 | -24.234 | 1.122 | -2.819 | 3.505 | 35.285 |
| Cavallo et al. | 2024 | 103.558 | -24.247 | 1.124 | â | â | â |
| Hunt & Reffert | 2023 | 103.663 | -24.234 | 1.122 | -2.819 | 3.505 | 35.285 |
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 |
|---|---|---|---|---|---|---|---|---|---|
| Wei et al. | 2025 | 0.74 | 0.77 | â | 3 | -0.250 | 825 | 0.51 | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 325* | â | â |
| Cavallo et al. | 2024 | 0.87 | 0.53 | â | 5 | -0.360 | â | â | â |
| Hunt & Reffert | 2023 | 0.86 | 0.16 | 0.75 | 8 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.