Theia 1654
0.32
UTI
0.52
CN
0.38
Cdens
0.62
CC3
0.03
Clit
1.0
Cdup
Nm (P>50%)
54
Core radius and density
1.9 [pc], 1.9 [pc-2]
- CN 0.52 Moderately populated
- Cdens 0.38 Loose
- CC3 0.62 Intermediate quality
- Clit 0.03 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 1654 is a moderately populated, loose object of intermediate C3 quality. Its parallax locates it at a relatively close distance, near 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.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 106.273 | -10.442 | 0.806 | -3.134 | 0.717 | 38.824 |
| Hunt & Reffert | 2024 | 106.259 | -10.382 | 0.8 | -3.156 | 0.85 | 28.412 |
| Cavallo et al. | 2024 | 106.244 | -10.884 | 0.807 | â | â | â |
| Hunt & Reffert | 2023 | 106.259 | -10.382 | 0.8 | -3.156 | 0.85 | 28.412 |
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 | 1.17 | 0.93 | 2.34 | 25 | -0.020 | 81 | â | â |
| Hunt & Reffert | 2024 | 1.17 | 0.93 | 2.34 | 25 | â | 81(1) | â | â |
| Cavallo et al. | 2024 | 1.52 | 1.41 | â | 15 | -0.020 | â | â | â |
| Hunt & Reffert | 2023 | 1.17 | 0.93 | 2.34 | 25 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Palma et al. (2025)
Part of multiple system G130, along with HSC_1767, NGC_2353 and HXHWL_22.
Cavallo et al. (2024)
Bronze sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.16 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.16 (50th percentile).