Theia 420
0.23
UTI
0.35
CN
0.31
Cdens
0.5
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
18.0 [arcmin]
- CN 0.35 Poorly populated
- Cdens 0.31 Loose
- CC3 0.5 Intermediate quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
Theia 420 is a poorly populated, loose object of intermediate 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, young 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
Moderate extinction
Near-solar metallicity
Young
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 319.04 | 43.821 | 1.102 | -2.968 | -3.866 | 10.771 |
| Hunt & Reffert | 2024 | 318.863 | 43.782 | 1.102 | -2.994 | -3.884 | -0.129 |
| Cavallo et al. | 2024 | 318.949 | 43.764 | 1.105 | â | â | â |
| Hunt & Reffert | 2023 | 318.863 | 43.782 | 1.102 | -2.994 | -3.884 | -0.129 |
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 | 169* | â | â |
| Cavallo et al. | 2024 | 0.85 | 1.21 | â | 72 | -0.250 | â | â | â |
| Hunt & Reffert | 2023 | 0.86 | 0.94 | 1.22 | 43 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.