Ryu 089
0.60
UTI
0.48
CN
1.0
Cdens
1.0
CC3
0.25
Clit
1.0
Cdup
Radius (P>50% members)
1.4 [arcmin]
- CN 0.48 Poorly populated
- Cdens 1.0 Very dense
- CC3 1.0 Very high quality
- Clit 0.25 Poorly studied
- Cdup 1.0 Unique
Overview
Ryu 089 is a poorly populated, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by high extinction. It is catalogued as a massive, metal-rich, intermediate-age cluster (see Parameters). It is poorly studied in the literature.
Note: This object shares a large percentage of members with a later reported entry. See table with shared members information.
Distant
High extinction
Massive
Metal-rich
Intermediate age
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 253.246 | -41.678 | 0.354 | -0.807 | -2.954 | -28.437 |
| Hunt & Reffert | 2024 | 253.244 | -41.679 | 0.344 | -0.806 | -2.948 | -26.815 |
| Cavallo et al. | 2024 | 253.233 | -41.662 | 0.341 | â | â | â |
| Hunt & Reffert | 2023 | 253.244 | -41.679 | 0.344 | -0.806 | -2.948 | -26.815 |
| Bica et al. | 2019 | 253.245 | -41.676 | â | â | â | 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 | 3145* | â | â |
| Cavallo et al. | 2024 | 3.61 | 4.67 | â | 60 | 0.670 | â | â | â |
| Hunt & Reffert | 2023 | 2.63 | 4.50 | 2.88 | 230 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Wood sample.