Theia 1756
0.41
UTI
0.76
CN
0.65
Cdens
0.75
CC3
0.0
Clit
0.96
Cdup
Stellar density (N50/rad)
3.2 [N/pc2]
- CN 0.76 Rich
- Cdens 0.65 Moderately dense
- CC3 0.75 High quality
- Clit 0.0 Rarely studied
- Cdup 0.96 Unique
đĨ Members
đ Colab
đŦ Bayestar19
MOCA
đ CDS
đ Simbad
đ CDS (Îą, δ)
đ Simbad (Îą, δ)
MOCA
đ CDS
đ Simbad
đ CDS (Îą, δ)
đ Simbad (Îą, δ)
Overview
Theia 1756 is a rich, moderately dense object of high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high extinction. It is catalogued as a very massive, near-solar metallicity, young cluster (see Parameters). It was recently reported in the literature.
Note: This is a unique object, which shares a very small percentage of members with at least one previously reported entry. See table with shared members information.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 274.017 | -16.404 | 0.313 | -0.499 | -2.121 | 14.968 |
| Hunt & Reffert | 2024 | 274.02 | -16.41 | 0.325 | -0.467 | -2.085 | 34.36 |
| Cavallo et al. | 2024 | 273.895 | -16.5 | 0.325 | â | â | â |
| Hunt & Reffert | 2023 | 274.02 | -16.41 | 0.325 | -0.467 | -2.085 | 34.36 |
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 | 2.92 | 4.2 | 3.19 | 56 | 0.120 | 5692 | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 5692(1) | â | â |
| Cavallo et al. | 2024 | 3.06 | 4.65 | â | 19 | 0.120 | â | â | â |
| Hunt & Reffert | 2023 | 2.78 | 3.75 | 3.19 | 92 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Palma et al. (2025)
Classified as optical pair P556, along with OC_0023.
Cavallo et al. (2024)
Wood sample.