Theia 651
0.01
UTI
0.0
CN
0.95
Cdens
0.75
CC3
0.0
Clit
0.04
Cdup
Radius (P>50% members)
10.5 [arcmin]
- CN 0.0 Sparse
- Cdens 0.95 Very dense
- CC3 0.75 High quality
- Clit 0.0 Rarely studied
- Cdup 0.04 Very likely duplicate
Overview
Theia 651 is a sparse, very dense object of high C3 quality. Its parallax locates it at a 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.
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
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 | 130.945 | -30.721 | 1.361 | -2.537 | -0.606 | 3.222 |
| Hu & Soubiran | 2025 | 130.833 | -30.747 | â | â | â | â |
| Cavallo et al. | 2024 | 130.833 | -30.747 | 1.36 | â | â | â |
| Hunt & Reffert | 2023 | 130.957 | -30.737 | 1.356 | -2.59 | -0.554 | 3.95 |
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 | -0.270* | â | â | â |
| Cavallo et al. | 2024 | 0.69 | 0.19 | â | 575 | 0.140 | â | â | â |
| Hunt & Reffert | 2023 | 0.69 | 0.09 | 0.30 | 689 | 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.