HSC 1772
0.23
UTI
0.25
CN
0.14
Cdens
0.25
CC3
0.25
Clit
1.0
Cdup
Radius (P>50% members)
15.5 [arcmin]
- CN 0.25 Poorly populated
- Cdens 0.14 Very loose
- CC3 0.25 Low quality
- Clit 0.25 Poorly studied
- Cdup 1.0 Unique
Overview
HSC 1772 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a relatively close distance, below the mid-plane, affected by low 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.
â ī¸ Warning: the low UTI value and no obvious signs of duplication (Cdup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.
Relatively close
Low 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 | 101.81 | -13.931 | 0.757 | -2.375 | 8.057 | 30.458 |
| Hu & Soubiran | 2025 | 101.705 | -13.926 | â | â | â | â |
| Hunt & Reffert | 2024 | 101.802 | -13.872 | 0.753 | -2.348 | 8.111 | 31.726 |
| Cavallo et al. | 2024 | 101.705 | -13.926 | 0.756 | â | â | â |
| Hunt & Reffert | 2023 | 101.802 | -13.872 | 0.753 | -2.348 | 8.111 | 31.726 |
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 | -0.240* | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 55* | â | â |
| Cavallo et al. | 2024 | 1.36 | 0.75 | â | 1000 | 0.280 | â | â | â |
| Hunt & Reffert | 2023 | 1.24 | 0.57 | 0.54 | 767 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.