HSC 821
0.17
UTI
0.26
CN
0.45
Cdens
0.12
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
11.6 [arcmin]
- CN 0.26 Poorly populated
- Cdens 0.45 Loose
- CC3 0.12 Very low quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
HSC 821 is a poorly populated, loose object of very low C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by moderate 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.
Close
Moderate 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 | 338.251 | 57.33 | 0.992 | -1.688 | -1.838 | -10.738 |
| Hunt & Reffert | 2024 | 338.248 | 57.319 | 0.964 | -1.72 | -1.879 | -12.993 |
| Cavallo et al. | 2024 | 338.281 | 57.344 | 0.973 | â | â | â |
| Hunt & Reffert | 2023 | 338.248 | 57.319 | 0.964 | -1.72 | -1.879 | -12.993 |
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 | 87* | â | â |
| Cavallo et al. | 2024 | 0.99 | 1.21 | â | 224 | 0.060 | â | â | â |
| Hunt & Reffert | 2023 | 0.98 | 0.91 | 0.31 | 238 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.