Theia 71
0.36
UTI
0.28
CN
0.29
Cdens
0.75
CC3
0.25
Clit
1.0
Cdup
Stellar density (N50/rad)
1.4 [N/pc2]
- CN 0.28 Poorly populated
- Cdens 0.29 Loose
- CC3 0.75 High quality
- Clit 0.25 Poorly 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 71 is a poorly populated, loose object of high C3 quality. Its parallax locates it at a very close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, very young cluster, but with a large variance across recent sources for the absorption and metallicity parameters (see Parameters). It was recently reported in the literature.
Note: This object shares a very small percentage of members with at least one entry reported in the same catalogue. 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 | 68.561 | 20.384 | 5.243 | 4.136 | -6.511 | 15.034 |
| Liu et al. | 2025 | 68.58 | 20.47 | 5.29 | 4.09 | -6.78 | 12.67 |
| Zhang et al. | 2024 | 68.582 | 20.467 | â | â | â | â |
| Cavallo et al. | 2024 | 68.82 | 20.485 | 5.286 | â | â | â |
| Hunt & Reffert | 2023 | 68.582 | 20.467 | 5.286 | 4.091 | -6.783 | 12.667 |
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 | 0.19 | 0.71 | 0.45 | 16 | 0.227 | â | â | â |
| Liu et al. | 2025 | 0.23 | 0.17 | â | 14 | â | â | â | â |
| Zhang et al. | 2024 | â | â | â | â | 0.073(1) | â | â | â |
| Cavallo et al. | 2024 | 0.18 | 1.43 | â | 44 | 0.380 | â | â | â |
| Hunt & Reffert | 2023 | 0.19 | 0.71 | 0.45 | 16 | 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 347 along with CWNU_1129, and of multiple system 35 along with HSC_1438, CWNU_1129, Theia_54, HSC_1426 and Theia_66.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as a moving group.