Theia 96
0.51
UTI
0.76
CN
0.38
Cdens
1.0
CC3
0.19
Clit
1.0
Cdup
Nm (P>50%)
140
Core radius and density
2.4 [pc], 1.9 [pc-2]
- CN 0.76 Rich
- Cdens 0.38 Loose
- CC3 1.0 Very high quality
- Clit 0.19 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 96 is a rich, loose object of very high C3 quality. Its parallax locates it at a very close distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, young cluster (see Parameters). It is rarely studied in the literature.
Note: This object shares a large percentage of members with 2 later reported entries. 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 | 305.279 | 48.772 | 2.841 | 3.002 | 1.965 | -7.956 |
| Yan et al. | 2026 | 305.287 | 48.925 | 2.846 | 3.03 | 1.965 | â |
| Liu et al. | 2025 | 305.29 | 48.92 | 2.85 | 3.03 | 1.97 | -12.67 |
| Zhang et al. | 2024 | 305.287 | 48.925 | â | â | â | â |
| Swiggum et al. | 2024 | 305.287 | 48.925 | 2.846 | 3.03 | 1.965 | -7.704 |
| Hunt & Reffert | 2024 | 305.287 | 48.925 | 2.846 | 3.03 | 1.965 | -12.675 |
| Cavallo et al. | 2024 | 305.134 | 48.881 | 2.843 | â | â | â |
| Hunt & Reffert | 2023 | 305.287 | 48.925 | 2.846 | 3.03 | 1.965 | -12.675 |
| Kounkel & Covey | 2019 | 306.173 | 49.462 | 3.174 | â | â | 0.626 |
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 | 0.35 | 0.15 | 0.62 | 22 | 0.026 | 126 | â | â |
| Yan et al. | 2026 | â | â | â | 41 | â | â | â | â |
| Liu et al. | 2025 | 0.41 | 0.12 | â | 35 | â | â | â | â |
| Zhang et al. | 2024 | â | â | â | â | 0.052(1) | â | â | â |
| Swiggum et al. | 2024 | 0.35 | â | â | 22 | â | 178 | â | â |
| Hunt & Reffert | 2024 | 0.35 | 0.15 | 0.62 | 22 | â | 73(1) | â | â |
| Cavallo et al. | 2024 | 0.36 | 0.61 | â | 17 | 0.000 | â | â | â |
| Hunt & Reffert | 2023 | 0.35 | 0.15 | 0.62 | 22 | â | â | â | â |
| Kounkel & Covey | 2019 | 0.28 | 0.23 | â | 35 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Yan et al. (2026)
Number of WDs: expected from single-star evolution N=0, with probability of formation through binary evolution >=0.5 N=1.
Liu et al. (2025)
Classified as primordial binary cluster 334 along with RSG_5, and of multiple system 79 along with RSG_5 and Roslund_6.
Palma et al. (2025)
Part of multiple system G235, along with RSG_5 and HSC_680.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.99 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.99 (50th percentile).