HSC 2558
0.05
UTI
0.0
CN
0.05
Cdens
0.25
CC3
0.0
Clit
0.8
Cdup
Radius (P>50% members)
11.9 [arcmin]
- CN 0.0 Sparse
- Cdens 0.05 Very loose
- CC3 0.25 Low quality
- Clit 0.0 Rarely studied
- Cdup 0.8 Very likely unique
Overview
HSC 2558 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster (see Parameters). It was recently reported in the literature.
Note: This is very likely a unique object, which shares a small percentage of members with at least one previously reported entry. See table with shared members information.
â ī¸ Warning: the low UTI value and no obvious signs of duplication (Cdup=0.8) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.
Relatively close
Moderate extinction
Near-solar metallicity
Young
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 196.453 | -61.886 | 0.429 | -4.03 | -1.314 | â |
| Cavallo et al. | 2024 | 195.828 | -61.982 | 0.431 | â | â | â |
| Hunt & Reffert | 2023 | 196.489 | -61.88 | 0.431 | -4.046 | -1.253 | 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 |
|---|---|---|---|---|---|---|---|---|---|
| Cavallo et al. | 2024 | 2.00 | 2.39 | â | 79 | 0.060 | â | â | â |
| Hunt & Reffert | 2023 | 2.16 | 2.29 | 2.55 | 27 | â | â | â | â |
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as a moving group.