Theia 1975
0.06
UTI
0.0
CN
0.18
Cdens
0.38
CC3
0.0
Clit
0.52
Cdup
Radius (P>50% members)
8.5 [arcmin]
- CN 0.0 Sparse
- Cdens 0.18 Very loose
- CC3 0.38 Low quality
- Clit 0.0 Rarely studied
- Cdup 0.52 Likely unique
Overview
Theia 1975 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high extinction. It is catalogued as a massive, metal-rich, very young cluster (see Parameters). It was recently reported in the literature.
Note: This is likely a unique object, which shares a moderate percentage of members with at least one previously reported entry. See table with shared members information.
Relatively close
High extinction
Massive
Metal-rich
Very young
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 305.517 | 37.039 | 0.495 | -2.402 | -5.356 | 53.948 |
| Hunt & Reffert | 2024 | 305.387 | 36.932 | 0.497 | -2.424 | -5.347 | 21.699 |
| Cavallo et al. | 2024 | 305.61 | 37.152 | 0.495 | â | â | â |
| Hunt & Reffert | 2023 | 305.387 | 36.932 | 0.497 | -2.424 | -5.347 | 21.699 |
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 | 1053* | â | â |
| Cavallo et al. | 2024 | 2.23 | 3.74 | â | 13 | 0.810 | â | â | â |
| Hunt & Reffert | 2023 | 1.96 | 4.08 | 2.76 | 7 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.