HSC 2128
0.15
UTI
0.0
CN
0.02
Cdens
0.75
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
8.5 [arcmin]
- CN 0.0 Sparse
- Cdens 0.02 Very loose
- CC3 0.75 High quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
HSC 2128 is a sparse, very loose object of high C3 quality. Its parallax locates it at a large distance, above the mid-plane, affected by very high extinction. It is catalogued as a massive, near-solar metallicity, young 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.
Very distant
Very high extinction
Massive
Near-solar metallicity
Young
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 133.062 | -43.532 | 0.18 | -3.171 | 3.338 | â |
| Hunt & Reffert | 2024 | 133.004 | -43.527 | 0.184 | -3.163 | 3.366 | â |
| Cavallo et al. | 2024 | 133.051 | -43.595 | 0.178 | â | â | â |
| Hunt & Reffert | 2023 | 133.004 | -43.527 | 0.184 | -3.163 | 3.366 | â |
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 |
|---|---|---|---|---|---|---|---|---|---|
| Hunt & Reffert | 2024 | â | â | â | â | â | 1516* | â | â |
| Cavallo et al. | 2024 | 5.37 | 5.09 | â | 51 | -0.060 | â | â | â |
| Hunt & Reffert | 2023 | 5.02 | 5.50 | 2.76 | 70 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Wood sample.