HSC 1643
0.26
UTI
0.28
CN
0.15
Cdens
0.38
CC3
0.25
Clit
1.0
Cdup
Radius (P>50% members)
3.4 [arcmin]
- CN 0.28 Poorly populated
- Cdens 0.15 Very loose
- CC3 0.38 Low quality
- Clit 0.25 Poorly studied
- Cdup 1.0 Unique
Overview
HSC 1643 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a large* distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It was recently reported in the literature.
(*): The parallax distance estimate (~6.20 kpc) differs significantly from the median photometric distance (~4.49 kpc).
Note: This object shares a large percentage of members with a later reported entry. See table with shared members information.
Distant
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 | 103.225 | 5.455 | 0.161 | -0.008 | -0.841 | 72.698 |
| Hu & Soubiran | 2025 | 103.219 | 5.443 | â | â | â | â |
| Hunt & Reffert | 2024 | 103.217 | 5.438 | 0.164 | -0.009 | -0.823 | 72.222 |
| Cavallo et al. | 2024 | 103.219 | 5.443 | 0.164 | â | â | â |
| Hunt & Reffert | 2023 | 103.217 | 5.438 | 0.164 | -0.009 | -0.823 | 72.222 |
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 | -0.290* | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 296* | â | â |
| Cavallo et al. | 2024 | 4.43 | 1.21 | â | 1380 | -0.190 | â | â | â |
| Hunt & Reffert | 2023 | 4.55 | 1.55 | 2.13 | 570 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.