HSC 620
0.23
UTI
0.0
CN
0.17
Cdens
0.5
CC3
0.25
Clit
1.0
Cdup
Radius (P>50% members)
13.6 [arcmin]
- CN 0.0 Sparse
- Cdens 0.17 Very loose
- CC3 0.5 Intermediate quality
- Clit 0.25 Poorly studied
- Cdup 1.0 Unique
Overview
HSC 620 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the metallicity parameter (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.
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 | 306.289 | 40.447 | 0.788 | -0.161 | -3.402 | -30.029 |
| Zhang et al. | 2024 | 306.305 | 40.404 | â | â | â | â |
| Hunt & Reffert | 2024 | 306.305 | 40.404 | 0.8 | -0.208 | -3.431 | -41.663 |
| Cavallo et al. | 2024 | 306.241 | 40.357 | 0.794 | â | â | â |
| Hunt & Reffert | 2023 | 306.305 | 40.404 | 0.8 | -0.208 | -3.431 | -41.663 |
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 | -0.374* | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 73* | â | â |
| Cavallo et al. | 2024 | 1.58 | 3.01 | â | 18 | 0.240 | â | â | â |
| Hunt & Reffert | 2023 | 1.25 | 2.53 | 1.66 | 125 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Silver sample.