HSC 457
0.14
UTI
0.0
CN
0.21
Cdens
0.5
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
3.7 [arcmin]
- CN 0.0 Sparse
- Cdens 0.21 Very loose
- CC3 0.5 Intermediate quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
HSC 457 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high extinction. It is catalogued as a near-solar metallicity, very 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.
Distant
High 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 | 294.795 | 20.143 | 0.258 | -2.546 | -6.12 | 101.945 |
| Hunt & Reffert | 2024 | 294.817 | 20.173 | 0.262 | -2.562 | -6.145 | 101.899 |
| Cavallo et al. | 2024 | 294.778 | 20.124 | 0.261 | â | â | â |
| Hunt & Reffert | 2023 | 294.817 | 20.173 | 0.262 | -2.562 | -6.145 | 101.899 |
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 | 752* | â | â |
| Cavallo et al. | 2024 | 4.17 | 3.57 | â | 8 | -0.200 | â | â | â |
| Hunt & Reffert | 2023 | 3.46 | 3.67 | 2.41 | 13 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Silver sample.