Theia 5228
0.16
UTI
0.0
CN
0.19
Cdens
0.62
CC3
0.0
Clit
1.0
Cdup
Stellar density (N50/rad)
1.0 [N/pc2]
- CN 0.0 Sparse
- Cdens 0.19 Very loose
- CC3 0.62 Intermediate quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
Theia 5228 is a sparse, very loose object of intermediate 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.
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 | 184.324 | -64.984 | 0.728 | -4.108 | -0.976 | -10.662 |
| Cavallo et al. | 2024 | 184.889 | -65.031 | 0.719 | â | â | â |
| Hunt & Reffert | 2023 | 183.766 | -64.903 | 0.719 | -4.059 | -0.996 | -1.178 |
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 | 1.285 | 0.81 | 0.43 | 138 | 0.000 | â | â | â |
| Cavallo et al. | 2024 | 1.26 | 0.97 | â | 115 | 0.000 | â | â | â |
| Hunt & Reffert | 2023 | 1.31 | 0.65 | 0.43 | 160 | â | â | â | â |
MOCA


Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as a moving group.