Theia 558
0.44
UTI
0.5
CN
0.59
Cdens
0.5
CC3
0.31
Clit
1.0
Cdup
Radius (P>50% members)
20.0 [arcmin]
- CN 0.5 Moderately populated
- Cdens 0.59 Moderately dense
- CC3 0.5 Intermediate quality
- Clit 0.31 Poorly studied
- Cdup 1.0 Unique
Overview
Theia 558 is a moderately populated, moderately dense object of intermediate C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It is poorly studied in the literature.
Close
Low 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 | 95.945 | 3.673 | 1.407 | -0.692 | -1.813 | 0.459 |
| Zhang et al. | 2024 | 95.905 | 3.67 | â | â | â | â |
| Hunt & Reffert | 2024 | 95.905 | 3.67 | 1.41 | -0.685 | -1.827 | -1.075 |
| Cavallo et al. | 2024 | 95.977 | 3.72 | 1.409 | â | â | â |
| Hunt & Reffert | 2023 | 95.905 | 3.67 | 1.41 | -0.685 | -1.827 | -1.075 |
| He et al. | 2022 | 95.953 | 3.644 | 1.406 | -0.651 | -1.81 | 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 |
|---|---|---|---|---|---|---|---|---|---|
| Zhang et al. | 2024 | â | â | â | â | -0.019* | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 72* | â | â |
| Cavallo et al. | 2024 | 0.66 | 0.99 | â | 316 | -0.250 | â | â | â |
| Hunt & Reffert | 2023 | 0.66 | 0.65 | 2.11 | 202 | â | â | â | â |
| He et al. | 2022 | â | 1.60 | â | 282 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.