Theia 2145
0.15
UTI
0.0
CN
0.53
Cdens
0.25
CC3
0.0
Clit
0.96
Cdup
Radius (P>50% members)
2.4 [arcmin]
- CN 0.0 Sparse
- Cdens 0.53 Moderately dense
- CC3 0.25 Low quality
- Clit 0.0 Rarely studied
- Cdup 0.96 Unique
Overview
Theia 2145 is a sparse, moderately dense object of low C3 quality. Its parallax locates it at a moderate 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.
Note: This is a unique object, which shares a very small percentage of members with at least one previously reported entry. See table with shared members information.
â ī¸ Warning: the low UTI value and no obvious signs of duplication (Cdup=0.96) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.
Distant
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 | 145.786 | -54.298 | 0.236 | -4.598 | 3.013 | â |
| Hunt & Reffert | 2024 | 145.803 | -54.3 | 0.232 | -4.605 | 3.007 | 32.412 |
| Cavallo et al. | 2024 | 145.934 | -54.311 | 0.233 | â | â | â |
| Hunt & Reffert | 2023 | 145.803 | -54.3 | 0.232 | -4.605 | 3.007 | 32.412 |
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 | 387* | â | â |
| Cavallo et al. | 2024 | 3.56 | 1.81 | â | 417 | 0.400 | â | â | â |
| Hunt & Reffert | 2023 | 4.08 | 2.17 | 2.19 | 151 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.