Theia 978
0.20
UTI
0.44
CN
0.19
Cdens
0.38
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
31.4 [arcmin]
- CN 0.44 Poorly populated
- Cdens 0.19 Very loose
- CC3 0.38 Low quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
Theia 978 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a close distance, above the mid-plane, affected by moderate extinction. It is catalogued as a metal-rich, 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
Moderate extinction
Metal-rich
Intermediate age
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 290.514 | 22.319 | 1.346 | -1.837 | -1.503 | -11.369 |
| Hunt & Reffert | 2024 | 290.421 | 22.341 | 1.315 | -1.881 | -1.559 | -13.945 |
| Cavallo et al. | 2024 | 290.383 | 22.432 | 1.316 | â | â | â |
| Hunt & Reffert | 2023 | 290.421 | 22.341 | 1.315 | -1.881 | -1.559 | -13.945 |
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 | 82* | â | â |
| Cavallo et al. | 2024 | 0.84 | 2.33 | â | 120 | 0.770 | â | â | â |
| Hunt & Reffert | 2023 | 0.73 | 2.31 | 2.52 | 119 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.