Theia 283
0.04
UTI
0.0
CN
0.11
Cdens
0.12
CC3
0.0
Clit
0.88
Cdup
Radius (P>50% members)
22.1 [arcmin]
- CN 0.0 Sparse
- Cdens 0.11 Very loose
- CC3 0.12 Very low quality
- Clit 0.0 Rarely studied
- Cdup 0.88 Very likely unique
Overview
Theia 283 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It was recently reported in the literature.
Note: This is very likely a unique object, which shares a 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=0.88) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.
Relatively close
Low 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 | 109.042 | -18.495 | 0.98 | -3.399 | 4.049 | 8.959 |
| Hunt & Reffert | 2024 | 108.943 | -18.58 | 0.948 | -3.368 | 3.993 | 24.27 |
| Cavallo et al. | 2024 | 109.199 | -18.659 | 0.951 | â | â | â |
| Hunt & Reffert | 2023 | 108.943 | -18.58 | 0.948 | -3.368 | 3.993 | 24.27 |
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 | 70* | â | â |
| Cavallo et al. | 2024 | 1.04 | 0.81 | â | 158 | -0.300 | â | â | â |
| Hunt & Reffert | 2023 | 0.99 | 0.21 | 0.78 | 186 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.