HSC 1809
0.14
UTI
0.0
CN
0.07
Cdens
0.62
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
7.4 [arcmin]
- CN 0.0 Sparse
- Cdens 0.07 Very loose
- CC3 0.62 Intermediate quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
HSC 1809 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by low extinction. It is catalogued as an 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.
Distant
Low extinction
Intermediate age
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 111.779 | -13.622 | 0.279 | -1.217 | 0.571 | 98.38 |
| Hunt & Reffert | 2024 | 111.773 | -13.563 | 0.287 | -1.22 | 0.595 | â |
| Hunt & Reffert | 2023 | 111.773 | -13.563 | 0.287 | -1.22 | 0.595 | 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 |
|---|---|---|---|---|---|---|---|---|---|
| Hunt & Reffert | 2024 | â | â | â | â | â | 129* | â | â |
| Hunt & Reffert | 2023 | 3.42 | 0.75 | 0.37 | 142 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
