HSC 655
0.16
UTI
0.0
CN
0.03
Cdens
0.25
CC3
0.25
Clit
1.0
Cdup
Radius (P>50% members)
6.4 [arcmin]
- CN 0.0 Sparse
- Cdens 0.03 Very loose
- CC3 0.25 Low quality
- Clit 0.25 Poorly studied
- Cdup 1.0 Unique
Overview
HSC 655 is a sparse, very loose object of low C3 quality. Its parallax locates it at a large distance, above the mid-plane, affected by high extinction. It is catalogued as an extremely massive, 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.
Very distant
High extinction
Extremely massive
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 | 309.382 | 45.205 | 0.182 | -2.688 | -3.805 | -40.861 |
| Zhang et al. | 2024 | 309.39 | 45.19 | â | â | â | â |
| Hunt & Reffert | 2024 | 309.39 | 45.19 | 0.202 | -2.658 | -3.804 | -52.374 |
| Cavallo et al. | 2024 | 309.26 | 45.196 | 0.207 | â | â | â |
| Hunt & Reffert | 2023 | 309.39 | 45.19 | 0.202 | -2.658 | -3.804 | -52.374 |
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 |
|---|---|---|---|---|---|---|---|---|---|
| Zhang et al. | 2024 | â | â | â | â | -0.013* | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 23328* | â | â |
| Cavallo et al. | 2024 | 6.70 | 3.68 | â | 151 | 0.110 | â | â | â |
| Hunt & Reffert | 2023 | 3.76 | 3.66 | 3.17 | 345 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Wood sample.