Theia 1140
0.13
UTI
0.0
CN
0.15
Cdens
0.38
CC3
0.06
Clit
1.0
Cdup
Nm (P>50%)
23
Core radius and density
1.6 [pc], 0.7 [pc-2]
- CN 0.0 Sparse
- Cdens 0.15 Very loose
- CC3 0.38 Low quality
- Clit 0.06 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 1140 is a sparse, very loose object of low C3 quality. Its parallax locates it at a close distance, above the mid-plane, affected by low extinction. It is catalogued as a low-mass, 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 | 280.887 | 5.642 | 1.449 | 3.743 | 0.247 | -14.161 |
| Hunt & Reffert | 2024 | 280.919 | 5.627 | 1.451 | 3.732 | 0.18 | -11.628 |
| Cavallo et al. | 2024 | 280.956 | 5.602 | 1.453 | â | â | â |
| Hunt & Reffert | 2023 | 280.919 | 5.627 | 1.451 | 3.732 | 0.18 | -11.628 |
| Kounkel & Covey | 2019 | 281.13 | 5.155 | 1.478 | â | â | -19.915 |
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 | 0.665 | 0.88 | 0.99 | 108 | 0.390 | 46 | â | â |
| Hunt & Reffert | 2024 | 0.65 | 0.88 | 0.99 | 92 | â | 46(1) | â | â |
| Cavallo et al. | 2024 | 0.74 | 0.64 | â | 123 | 0.390 | â | â | â |
| Hunt & Reffert | 2023 | 0.65 | 0.88 | 0.99 | 92 | â | â | â | â |
| Kounkel & Covey | 2019 | 0.68 | 1.17 | â | 951 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.92 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.92 (50th percentile).