Theia 3494
0.16
UTI
0.0
CN
0.06
Cdens
0.62
CC3
0.06
Clit
1.0
Cdup
Nm (P>50%)
23
Core radius and density
3.5 [pc], 0.3 [pc-2]
- CN 0.0 Sparse
- Cdens 0.06 Very loose
- CC3 0.62 Intermediate quality
- Clit 0.06 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 3494 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, above 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 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 | 299.8 | 40.576 | 0.492 | -0.137 | -5.545 | â |
| Zhang et al. | 2024 | 299.802 | 40.616 | â | â | â | â |
| Hunt & Reffert | 2024 | 299.802 | 40.616 | 0.494 | -0.108 | -5.511 | -28.843 |
| Cavallo et al. | 2024 | 299.846 | 40.454 | 0.497 | â | â | â |
| Hunt & Reffert | 2023 | 299.802 | 40.616 | 0.494 | -0.108 | -5.511 | -28.843 |
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 | 1.9 | 0.93 | 0.42 | 174 | 0.218 | 52 | â | â |
| Zhang et al. | 2024 | â | â | â | â | 0.046(1) | â | â | â |
| Hunt & Reffert | 2024 | 1.90 | 0.93 | 0.42 | 174 | â | 52(1) | â | â |
| Cavallo et al. | 2024 | 1.92 | 0.63 | â | 490 | 0.390 | â | â | â |
| Hunt & Reffert | 2023 | 1.90 | 0.93 | 0.42 | 174 | 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 classes: 1.00 (50th percentile), true positive (human-assigned).
Hunt & Reffert (2023)
Classified as open cluster. CMD classes: 1.00 (50th percentile), true positive (human-assigned).