Theia 1038
0.14
UTI
0.0
CN
0.02
Cdens
0.62
CC3
0.03
Clit
1.0
Cdup
Nm (P>50%)
18
Core radius and density
2.5 [pc], 0.1 [pc-2]
- CN 0.0 Sparse
- Cdens 0.02 Very loose
- CC3 0.62 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 1038 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a close distance, near 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 | 268.486 | -24.254 | 1.963 | 0.818 | -7.484 | -16.904 |
| Cavallo et al. | 2024 | 269.088 | -23.295 | 1.939 | â | â | â |
| Hunt & Reffert | 2023 | 268.465 | -24.29 | 1.938 | 0.856 | -7.378 | -26.18 |
| Kounkel & Covey | 2019 | 269.507 | -23.991 | 1.737 | â | â | -28.538 |
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 | 0.49 | 1.22 | 1.23 | 158 | -0.450 | â | â | â |
| Cavallo et al. | 2024 | 0.48 | 1.80 | â | 158 | -0.450 | â | â | â |
| Hunt & Reffert | 2023 | 0.49 | 1.22 | 1.23 | 78 | â | â | â | â |
| Kounkel & Covey | 2019 | 0.58 | 0.91 | â | 671 | â | â | â | â |
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as moving group. CMD class: 0.96 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.96 (50th percentile).