HSC 1980
0.19
UTI
0.25
CN
0.1
Cdens
0.62
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
14.9 [arcmin]
- CN 0.25 Poorly populated
- Cdens 0.1 Very loose
- CC3 0.62 Intermediate quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
HSC 1980 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (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 | 123.41 | -26.899 | 0.606 | -3.73 | 1.55 | 36.916 |
| Hu & Soubiran | 2025 | 123.356 | -26.903 | â | â | â | â |
| Cavallo et al. | 2024 | 123.356 | -26.903 | 0.618 | â | â | â |
| Hunt & Reffert | 2023 | 123.311 | -26.912 | 0.619 | -3.729 | 1.56 | 37.492 |
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 | -0.080* | â | â | â |
| Cavallo et al. | 2024 | 1.41 | 0.03 | â | 813 | -0.140 | â | â | â |
| Hunt & Reffert | 2023 | 1.50 | 0.16 | 0.17 | 252 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as a moving group.