Theia 1474
0.17
UTI
0.39
CN
0.04
Cdens
0.25
CC3
0.1
Clit
1.0
Cdup
Nm (P>50%)
39
Core radius and density
1.3 [pc], 0.2 [pc-2]
- CN 0.39 Poorly populated
- Cdens 0.04 Very loose
- CC3 0.25 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 1474 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a relatively 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 absorption 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 | 336.754 | 60.128 | 0.994 | -2.995 | -2.775 | -11.854 |
| Hunt & Reffert | 2024 | 336.671 | 60.148 | 0.994 | -2.995 | -2.755 | -30.887 |
| Cavallo et al. | 2024 | 336.877 | 59.942 | 0.996 | â | â | â |
| Hunt & Reffert | 2023 | 336.671 | 60.148 | 0.994 | -2.995 | -2.755 | -30.887 |
| Kounkel & Covey | 2019 | 336.11 | 59.78 | 1.082 | â | â | -21.667 |
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 | 0.96 | 1.78 | 1.38 | 159 | 0.490 | 64 | â | â |
| Liu et al. | 2025 | 1.71 | 0.60 | â | 98 | â | â | â | â |
| Hunt & Reffert | 2024 | 0.96 | 1.78 | 1.38 | 159 | â | 64(1) | â | â |
| Cavallo et al. | 2024 | 1.10 | 2.14 | â | 132 | 0.490 | â | â | â |
| Hunt & Reffert | 2023 | 0.96 | 1.78 | 1.38 | 159 | â | â | â | â |
| Kounkel & Covey | 2019 | 0.92 | 1.12 | â | 1758 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Liu et al. (2025)
Classified as tidal capture (resonant trapping binary) 356 along with UPK_178.
Palma et al. (2025)
Classified as optical pair P529, along with HSC_823.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.98 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.98 (50th percentile).