Theia 1806
0.06
UTI
0.34
CN
1.0
Cdens
0.12
CC3
0.25
Clit
0.15
Cdup
Radius (P>50% members)
4.7 [arcmin]
- CN 0.34 Poorly populated
- Cdens 1.0 Very dense
- CC3 0.12 Very low quality
- Clit 0.25 Poorly studied
- Cdup 0.15 Likely duplicate
Overview
Theia 1806 is a poorly populated, very dense object of very low C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It was recently reported in the literature.
â ī¸ Warning: This is likely a duplicate object, which shares a large percentage of members with at least one previously reported entry. See table with shared members information.
Relatively 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 | 85.449 | 27.492 | 0.758 | -0.325 | -4.367 | -2.946 |
| Hu & Soubiran | 2025 | 85.409 | 27.458 | â | â | â | â |
| Hunt & Reffert | 2024 | 85.433 | 27.5 | 0.734 | -0.208 | -4.369 | -3.067 |
| Cavallo et al. | 2024 | 85.409 | 27.458 | 0.737 | â | â | â |
| Hunt & Reffert | 2023 | 85.433 | 27.5 | 0.734 | -0.208 | -4.369 | -3.067 |
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 |
|---|---|---|---|---|---|---|---|---|---|
| Hu & Soubiran | 2025 | â | â | â | â | -0.200* | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 176* | â | â |
| Cavallo et al. | 2024 | 1.50 | 1.51 | â | 513 | 0.360 | â | â | â |
| Hunt & Reffert | 2023 | 1.28 | 1.79 | 2.39 | 187 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.