CWNU 1445
0.24
UTI
0.36
CN
0.16
Cdens
0.5
CC3
0.1
Clit
1.0
Cdup
Nm (P>50%)
36
Core radius and density
2.4 [pc], 0.8 [pc-2]
- CN 0.36 Poorly populated
- Cdens 0.16 Very loose
- CC3 0.5 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
CWNU 1445 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the absorption and age parameters (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 | 105.576 | -7.185 | 0.386 | -1.14 | 0.374 | â |
| Hunt & Reffert | 2024 | 105.592 | -7.193 | 0.375 | -1.133 | 0.371 | â |
| Cavallo et al. | 2024 | 105.583 | -7.206 | 0.375 | â | â | â |
| Hunt & Reffert | 2023 | 105.592 | -7.193 | 0.375 | -1.133 | 0.371 | â |
| He et al. | 2023 | 105.584 | -7.189 | 0.384 | -1.151 | 0.377 | â |
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 | 2.45 | 1.77 | 1.51 | 88 | -0.020 | 209 | â | â |
| Liu et al. | 2025 | 2.45 | 0.25 | â | 22 | â | â | â | â |
| Hunt & Reffert | 2024 | 2.74 | 1.77 | 1.51 | 88 | â | 209(1) | â | â |
| Cavallo et al. | 2024 | 2.24 | 1.10 | â | 363 | -0.020 | â | â | â |
| Hunt & Reffert | 2023 | 2.74 | 1.77 | 1.51 | 88 | â | â | â | â |
| He et al. | 2023 | 2.34 | 1.95 | â | 28 | 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 primordial binary cluster 106 along with CWNU_2918.
Palma et al. (2025)
Classified as optical pair P309, along with CWNU_2918.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD classes: 0.94 (50th percentile), true positive? (human-assigned).
Hunt & Reffert (2023)
Classified as open cluster. CMD classes: 0.94 (50th percentile), true positive? (human-assigned).