Theia 2443
0.29
UTI
0.34
CN
0.21
Cdens
0.75
CC3
0.06
Clit
1.0
Cdup
Nm (P>50%)
34
Core radius and density
1.4 [pc], 1.1 [pc-2]
- CN 0.34 Poorly populated
- Cdens 0.21 Very loose
- CC3 0.75 High 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 2443 is a poorly populated, very loose object of high 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, intermediate-age cluster, but with a large variance across recent sources for the absorption and age parameters (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 | 242.209 | -56.046 | 0.985 | -0.397 | -4.061 | -30.492 |
| Hunt & Reffert | 2024 | 242.231 | -56.063 | 0.995 | -0.449 | -4.092 | -12.173 |
| Cavallo et al. | 2024 | 242.052 | -56.063 | 0.998 | â | â | â |
| Hunt & Reffert | 2023 | 242.231 | -56.063 | 0.995 | -0.449 | -4.092 | -12.173 |
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 | 0.945 | 0.83 | 1.08 | 142 | -0.490 | 217 | â | â |
| Liu et al. | 2025 | 0.94 | 0.16 | â | 214 | â | â | â | â |
| Hunt & Reffert | 2024 | 0.95 | 0.83 | 1.08 | 71 | â | 217(1) | â | â |
| Cavallo et al. | 2024 | 0.86 | 1.23 | â | 324 | -0.490 | â | â | â |
| Hunt & Reffert | 2023 | 0.95 | 0.83 | 1.08 | 71 | 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 tidal capture (resonant trapping binary) 290 along with NGC_6087.
Palma et al. (2025)
Part of multiple system G211, along with NGC_6087 and Lynga_7.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.96 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.96 (50th percentile).