Theia 458
0.19
UTI
0.26
CN
0.59
Cdens
0.12
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
17.2 [arcmin]
- CN 0.26 Poorly populated
- Cdens 0.59 Moderately dense
- CC3 0.12 Very low quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
Theia 458 is a poorly populated, moderately dense object of very low 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 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.
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 | 106.275 | -16.997 | 1.68 | -6.552 | 0.075 | 22.904 |
| Cavallo et al. | 2024 | 106.41 | -17.094 | 1.687 | â | â | â |
| Hunt & Reffert | 2023 | 106.24 | -16.827 | 1.663 | -6.452 | 0.027 | 20.652 |
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 | 0.60 | 0.43 | â | 63 | -0.050 | â | â | â |
| Hunt & Reffert | 2023 | 0.57 | 0.21 | 0.95 | 138 | â | â | â | â |
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as a moving group.