Theia 4877
0.34
UTI
0.26
CN
0.17
Cdens
0.75
CC3
0.25
Clit
1.0
Cdup
Radius (P>50% members)
14.5 [arcmin]
- CN 0.26 Poorly populated
- Cdens 0.17 Very loose
- CC3 0.75 High quality
- Clit 0.25 Poorly studied
- Cdup 1.0 Unique
Overview
Theia 4877 is a poorly populated, very loose object of high C3 quality. Its parallax locates it at a relatively close distance, above 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.
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 | 294.17 | 45.094 | 0.767 | -0.534 | -0.481 | -13.38 |
| Hu & Soubiran | 2025 | 294.192 | 45.087 | â | â | â | â |
| Zhang et al. | 2024 | 294.166 | 45.127 | â | â | â | â |
| Cavallo et al. | 2024 | 294.192 | 45.087 | 0.766 | â | â | â |
| Hunt & Reffert | 2023 | 294.166 | 45.127 | 0.758 | -0.571 | -0.499 | -12.959 |
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 |
|---|---|---|---|---|---|---|---|---|---|
| Hu & Soubiran | 2025 | â | â | â | â | -0.120* | â | â | â |
| Zhang et al. | 2024 | â | â | â | â | 0.101* | â | â | â |
| Cavallo et al. | 2024 | 1.25 | 0.22 | â | 1047 | 0.430 | â | â | â |
| Hunt & Reffert | 2023 | 1.27 | 0.21 | 0.29 | 721 | 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.