Theia 105
0.13
UTI
0.0
CN
0.16
Cdens
0.5
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
36.4 [arcmin]
- CN 0.0 Sparse
- Cdens 0.16 Very loose
- CC3 0.5 Intermediate quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
Theia 105 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, very young 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
Low extinction
Near-solar metallicity
Very young
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 139.444 | -45.346 | 1.94 | -9.199 | 0.056 | 15.304 |
| Cavallo et al. | 2024 | 139.602 | -45.423 | 1.936 | â | â | â |
| Hunt & Reffert | 2023 | 139.541 | -45.847 | 1.916 | -9.225 | 0.062 | 12.543 |
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 |
|---|---|---|---|---|---|---|---|---|---|
| Cavallo et al. | 2024 | 0.54 | 0.55 | â | 9 | -0.100 | â | â | â |
| Hunt & Reffert | 2023 | 0.51 | 0.13 | 0.42 | 21 | â | â | â | â |
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as a moving group.