Theia 980
0.15
UTI
0.0
CN
0.37
Cdens
0.38
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
15.9 [arcmin]
- CN 0.0 Sparse
- Cdens 0.37 Loose
- CC3 0.38 Low quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
Theia 980 is a sparse, loose object of low 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, 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
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 | 187.797 | -65.147 | 1.309 | -6.42 | -2.693 | 19.918 |
| Hunt & Reffert | 2024 | 188.223 | -65.194 | 1.303 | -6.435 | -2.681 | 10.156 |
| Cavallo et al. | 2024 | 187.26 | -65.135 | 1.303 | â | â | â |
| Hunt & Reffert | 2023 | 188.223 | -65.194 | 1.303 | -6.435 | -2.681 | 10.156 |
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 | 72* | â | â |
| Cavallo et al. | 2024 | 0.80 | 1.10 | â | 389 | 0.480 | â | â | â |
| Hunt & Reffert | 2023 | 0.73 | 1.12 | 2.40 | 103 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.