HSC 1636
0.05
UTI
0.0
CN
0.15
Cdens
0.12
CC3
0.0
Clit
0.92
Cdup
Radius (P>50% members)
12.2 [arcmin]
- CN 0.0 Sparse
- Cdens 0.15 Very loose
- CC3 0.12 Very low quality
- Clit 0.0 Rarely studied
- Cdup 0.92 Very likely unique
Overview
HSC 1636 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the absorption parameter (see Parameters). It was recently reported in the literature.
Note: This is very likely a unique object, which shares a very 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=0.92) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.
Relatively close
Low 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 | 99.852 | 4.94 | 0.642 | -2.042 | 0.75 | 28.991 |
| Hunt & Reffert | 2024 | 99.889 | 4.887 | 0.632 | -2.046 | 0.766 | 28.925 |
| Cavallo et al. | 2024 | 99.822 | 4.929 | 0.631 | â | â | â |
| Hunt & Reffert | 2023 | 99.889 | 4.887 | 0.632 | -2.046 | 0.766 | 28.925 |
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 | 88* | â | â |
| Cavallo et al. | 2024 | 1.45 | 0.00 | â | 31 | 0.250 | â | â | â |
| Hunt & Reffert | 2023 | 1.49 | 1.18 | 0.89 | 92 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Silver sample.