Theia 1306
0.14
UTI
0.0
CN
0.12
Cdens
0.5
CC3
0.03
Clit
1.0
Cdup
Nm (P>50%)
17
Core radius and density
1.6 [pc], 0.6 [pc-2]
- CN 0.0 Sparse
- Cdens 0.12 Very loose
- CC3 0.5 Intermediate quality
- Clit 0.03 Rarely studied
- Cdup 1.0 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 1306 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a close distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It is rarely studied 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 | 246.593 | -42.076 | 1.769 | -4.58 | -4.085 | -16.631 |
| Cavallo et al. | 2024 | 246.765 | -41.916 | 1.77 | â | â | â |
| Hunt & Reffert | 2023 | 246.498 | -42.344 | 1.766 | -4.578 | -4.055 | -13.351 |
| Kounkel & Covey | 2019 | 246.59 | -42.124 | 1.577 | â | â | -9.581 |
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 | 0.59 | 1.59 | 2.12 | 407 | 0.010 | â | â | â |
| Cavallo et al. | 2024 | 0.59 | 1.63 | â | 407 | 0.010 | â | â | â |
| Hunt & Reffert | 2023 | 0.53 | 1.59 | 2.12 | 137 | â | â | â | â |
| Kounkel & Covey | 2019 | 0.63 | 0.97 | â | 1288 | â | â | â | â |
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as moving group. CMD class: 0.75 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.75 (50th percentile).