Theia 3582
0.23
UTI
0.0
CN
0.32
Cdens
0.62
CC3
0.1
Clit
1.0
Cdup
Nm (P>50%)
19
Core radius and density
1.0 [pc], 1.6 [pc-2]
- CN 0.0 Sparse
- Cdens 0.32 Loose
- CC3 0.62 Intermediate 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 3582 is a sparse, loose object of intermediate C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age and metallicity parameters (see Parameters). It was recently reported 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 | 84.443 | 31.005 | 1.506 | 1.838 | -1.076 | -7.239 |
| Hu & Soubiran | 2025 | 84.732 | 30.862 | â | â | â | â |
| Zhang et al. | 2024 | 84.443 | 31.003 | â | â | â | â |
| Hunt & Reffert | 2024 | 84.443 | 31.003 | 1.471 | 1.779 | -1.058 | -5.927 |
| Cavallo et al. | 2024 | 84.732 | 30.862 | 1.491 | â | â | â |
| Hunt & Reffert | 2023 | 84.443 | 31.003 | 1.471 | 1.779 | -1.058 | -5.927 |
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 | 0.62 | 0.69 | 1.92 | 121 | -0.068 | 84 | â | â |
| Hu & Soubiran | 2025 | â | â | â | â | -0.270(5) | â | â | â |
| Zhang et al. | 2024 | â | â | â | â | -0.068(1) | â | â | â |
| Hunt & Reffert | 2024 | 0.62 | 0.69 | 1.92 | 121 | â | 84(1) | â | â |
| Cavallo et al. | 2024 | 0.64 | 0.71 | â | 603 | 0.140 | â | â | â |
| Hunt & Reffert | 2023 | 0.62 | 0.69 | 1.92 | 121 | 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: 0.76 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.76 (50th percentile).