Theia 3581
0.24
UTI
0.46
CN
0.22
Cdens
0.62
CC3
0.25
Clit
0.65
Cdup
Stellar density (N50/rad)
1.1 [N/pc2]
- CN 0.46 Poorly populated
- Cdens 0.22 Very loose
- CC3 0.62 Intermediate quality
- Clit 0.25 Poorly studied
- Cdup 0.65 Likely 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 3581 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, young cluster (see Parameters). It was recently reported in the literature.
Note: This is likely a unique object, which shares a moderate percentage of members with at least one previously reported entry. See table with shared members information.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 112.305 | -14.192 | 0.887 | -3.323 | 1.074 | 16.629 |
| Hunt & Reffert | 2024 | 112.258 | -14.16 | 0.895 | -3.361 | 1.065 | 15.788 |
| Cavallo et al. | 2024 | 112.432 | -14.052 | 0.898 | â | â | â |
| Hunt & Reffert | 2023 | 112.258 | -14.16 | 0.895 | -3.361 | 1.065 | 15.788 |
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 | 1.12 | 0.47 | 1.11 | 48 | -0.370 | 159 | â | â |
| Liu et al. | 2025 | 1.35 | 0.16 | â | 48 | â | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 159(1) | â | â |
| Cavallo et al. | 2024 | 1.12 | 0.67 | â | 34 | -0.370 | â | â | â |
| Hunt & Reffert | 2023 | 1.06 | 0.47 | 1.11 | 61 | 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 primordial binary cluster 367 along with Ruprecht_26.
Palma et al. (2025)
Part of multiple system G236, along with Ruprecht_26, Ruprecht_151 and HSC_1867.
Cavallo et al. (2024)
Gold sample.