Theia 295
0.18
UTI
0.0
CN
0.06
Cdens
0.62
CC3
0.1
Clit
1.0
Cdup
Nm (P>50%)
19
Core radius and density
3.0 [pc], 0.3 [pc-2]
- CN 0.0 Sparse
- Cdens 0.06 Very 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 295 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a relatively close distance, below 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 metallicity 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 | 152.586 | -61.541 | 0.666 | -7.289 | 3.851 | 21.129 |
| Hu & Soubiran | 2025 | 152.751 | -61.553 | â | â | â | â |
| Hunt & Reffert | 2024 | 152.541 | -61.477 | 0.664 | -7.267 | 3.84 | 13.814 |
| Cavallo et al. | 2024 | 152.751 | -61.553 | 0.665 | â | â | â |
| Hunt & Reffert | 2023 | 152.541 | -61.477 | 0.664 | -7.267 | 3.84 | 13.814 |
| Kounkel & Covey | 2019 | 152.598 | -61.3 | 1.129 | â | â | 10.261 |
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 | 1.435 | 0.435 | 0.43 | 169 | 0.035 | 54 | â | â |
| Hu & Soubiran | 2025 | â | â | â | â | -0.260(5) | â | â | â |
| Hunt & Reffert | 2024 | 1.45 | 0.54 | 0.43 | 169 | â | 54(1) | â | â |
| Cavallo et al. | 2024 | 1.42 | 0.30 | â | 537 | 0.330 | â | â | â |
| Hunt & Reffert | 2023 | 1.45 | 0.54 | 0.43 | 169 | â | â | â | â |
| Kounkel & Covey | 2019 | 0.89 | 0.33 | â | 86 | 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: 1.00 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).