HSC 189
0.09
UTI
0.0
CN
0.08
Cdens
0.38
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
50.5 [arcmin]
- CN 0.0 Sparse
- Cdens 0.08 Very loose
- CC3 0.38 Low quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
HSC 189 is a sparse, very loose object of low C3 quality. Its parallax locates it at a 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.
Very 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 | 278.531 | -16.022 | 2.0 | -3.627 | -9.627 | 4.864 |
| Cavallo et al. | 2024 | 278.532 | -16.167 | 2.013 | â | â | â |
| Hunt & Reffert | 2023 | 279.065 | -16.996 | 2.014 | -3.617 | -9.599 | -5.297 |
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 |
|---|---|---|---|---|---|---|---|---|---|
| Cavallo et al. | 2024 | 0.49 | 1.09 | â | 257 | 0.210 | â | â | â |
| Hunt & Reffert | 2023 | 0.47 | 1.04 | 0.35 | 125 | â | â | â | â |
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as a moving group.