Theia 1982
0.09
UTI
0.0
CN
0.08
Cdens
0.38
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
8.8 [arcmin]
- CN 0.0 Sparse
- Cdens 0.08 Very loose
- CC3 0.38 Low quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
Theia 1982 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate 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.
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 | 156.952 | -59.911 | 0.357 | -7.208 | 2.99 | â |
| Hunt & Reffert | 2024 | 156.828 | -59.942 | 0.356 | -7.178 | 2.985 | â |
| Cavallo et al. | 2024 | 156.958 | -59.938 | 0.356 | â | â | â |
| Hunt & Reffert | 2023 | 156.828 | -59.942 | 0.356 | -7.178 | 2.985 | 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 | 104* | â | â |
| Cavallo et al. | 2024 | 2.86 | 1.45 | â | 81 | -0.320 | â | â | â |
| Hunt & Reffert | 2023 | 2.54 | 0.69 | 1.12 | 122 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.