Theia 269
0.13
UTI
0.0
CN
0.17
Cdens
0.5
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
21.5 [arcmin]
- CN 0.0 Sparse
- Cdens 0.17 Very loose
- CC3 0.5 Intermediate quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
Theia 269 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a close distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity parameter (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
Intermediate age
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 314.304 | 16.665 | 1.191 | 2.018 | 2.047 | -11.808 |
| Zhang et al. | 2024 | 314.325 | 16.601 | â | â | â | â |
| Cavallo et al. | 2024 | 314.255 | 16.698 | 1.174 | â | â | â |
| Hunt & Reffert | 2023 | 314.325 | 16.601 | 1.151 | 1.989 | 1.982 | -13.173 |
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 |
|---|---|---|---|---|---|---|---|---|---|
| Zhang et al. | 2024 | â | â | â | â | -0.270* | â | â | â |
| Cavallo et al. | 2024 | 0.85 | 0.15 | â | 389 | 0.220 | â | â | â |
| Hunt & Reffert | 2023 | 0.80 | 0.15 | 0.42 | 156 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as a moving group.