Theia 754
0.02
UTI
1.0
CN
1.0
Cdens
1.0
CC3
0.31
Clit
0.02
Cdup
Radius (P>50% members)
21.3 [arcmin]
- CN 1.0 Very rich
- Cdens 1.0 Very dense
- CC3 1.0 Very high quality
- Clit 0.31 Poorly studied
- Cdup 0.02 Very likely duplicate
Overview
Theia 754 is a very rich, very dense object of very high C3 quality. Its parallax locates it at a close distance, below the mid-plane, affected by moderate extinction. It is catalogued as a massive, 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: This is very likely a duplicate object, which shares a large percentage of members with at least one previously reported entry. See table with shared members information.
Close
Moderate extinction
Massive
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 | 75.942 | 23.674 | 1.387 | -0.998 | -2.405 | -10.313 |
| Wei et al. | 2025 | 75.957 | 23.676 | 1.387 | -1.003 | -2.405 | â |
| Zhang et al. | 2024 | 75.967 | 23.674 | â | â | â | â |
| Hunt & Reffert | 2024 | 75.967 | 23.674 | 1.387 | -0.995 | -2.411 | -12.93 |
| Cavallo et al. | 2024 | 75.96 | 23.664 | 1.383 | â | â | â |
| Hunt & Reffert | 2023 | 75.967 | 23.674 | 1.387 | -0.995 | -2.411 | -12.93 |
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 |
|---|---|---|---|---|---|---|---|---|---|
| Wei et al. | 2025 | 1.32 | 1.44 | â | 66 | 0.250 | 840 | 0.33 | â |
| Zhang et al. | 2024 | â | â | â | â | -0.100* | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 1390* | â | â |
| Cavallo et al. | 2024 | 0.73 | 1.11 | â | 209 | 0.370 | â | â | â |
| Hunt & Reffert | 2023 | 0.68 | 1.05 | 0.68 | 149 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.