Theia 745
0.08
UTI
0.0
CN
0.13
Cdens
0.25
CC3
0.0
Clit
1.0
Cdup
Stellar density (N50/rad)
0.6 [N/pc2]
- CN 0.0 Sparse
- Cdens 0.13 Very loose
- CC3 0.25 Low quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
đĨ Members
đ Colab
đŦ Bayestar19
MOCA
đ CDS
đ Simbad
đ CDS (Îą, δ)
đ Simbad (Îą, δ)
MOCA
đ CDS
đ Simbad
đ CDS (Îą, δ)
đ Simbad (Îą, δ)
Overview
Theia 745 is a sparse, very 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.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 295.075 | 15.826 | 1.388 | 0.735 | -3.749 | -19.376 |
| Cavallo et al. | 2024 | 295.036 | 16.086 | 1.371 | â | â | â |
| Hunt & Reffert | 2023 | 295.083 | 15.816 | 1.372 | 0.705 | -3.728 | -21.286 |
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] | Bfrac | BSS |
|---|---|---|---|---|---|---|---|---|---|
| UCC | 99999â | 0.715 | 1.31 | 0.53 | 146 | -0.330 | â | â | â |
| Cavallo et al. | 2024 | 0.73 | 1.53 | â | 178 | -0.330 | â | â | â |
| Hunt & Reffert | 2023 | 0.70 | 1.09 | 0.53 | 114 | â | â | â | â |
Palma et al. (2025)
Classified as optical pair P178, along with Theia_553.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as a moving group.