Theia 1450
0.20
UTI
0.38
CN
0.07
Cdens
0.38
CC3
0.1
Clit
1.0
Cdup
Nm (P>50%)
38
Core radius and density
3.7 [pc], 0.4 [pc-2]
- CN 0.38 Poorly populated
- Cdens 0.07 Very loose
- CC3 0.38 Low quality
- Clit 0.1 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 1450 is a poorly populated, very loose object of low 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, but with a large variance across recent sources for the metallicity parameter (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 | 315.201 | 49.778 | 1.259 | 5.91 | 2.998 | -49.982 |
| Yang et al. | 2025 | 315.494 | 49.824 | â | â | â | â |
| Hunt & Reffert | 2024 | 315.494 | 49.824 | 1.26 | 5.887 | 3.127 | -49.531 |
| Cavallo et al. | 2024 | 314.338 | 49.449 | 1.262 | â | â | â |
| Hunt & Reffert | 2023 | 315.494 | 49.824 | 1.26 | 5.887 | 3.127 | -49.531 |
| Kounkel & Covey | 2019 | 314.431 | 49.039 | 1.375 | â | â | -24.628 |
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 | 0.75 | 2.865 | 2.78 | 224 | 0.190 | 74 | â | â |
| Yang et al. | 2025 | â | â | â | 224 | -0.080(3) | â | â | â |
| Hunt & Reffert | 2024 | 0.75 | 3.14 | 2.78 | 223 | â | 74(1) | â | â |
| Cavallo et al. | 2024 | 0.91 | 2.59 | â | 263 | 0.460 | â | â | â |
| Hunt & Reffert | 2023 | 0.75 | 3.14 | 2.78 | 223 | â | â | â | â |
| Kounkel & Covey | 2019 | 0.73 | 1.09 | â | 1760 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Cavallo et al. (2024)
Silver sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.01 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.01 (50th percentile).