CWNU 1145
0.24
UTI
0.29
CN
0.16
Cdens
0.25
CC3
0.25
Clit
1.0
Cdup
Stellar density (N50/rad)
0.8 [N/pc2]
- CN 0.29 Poorly populated
- Cdens 0.16 Very loose
- CC3 0.25 Low quality
- Clit 0.25 Poorly 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 1145 is a poorly populated, very loose object of low 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, but with a large variance across recent sources for the age and metallicity parameters (see Parameters). It is poorly 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 | 75.797 | 39.931 | 0.947 | -0.491 | -3.009 | -20.96 |
| Zhang et al. | 2024 | 75.727 | 39.946 | â | â | â | â |
| Hunt & Reffert | 2024 | 75.726 | 39.946 | 0.9 | -0.5 | -3.026 | -24.034 |
| Cavallo et al. | 2024 | 76.035 | 39.847 | 0.899 | â | â | â |
| Hunt & Reffert | 2023 | 75.726 | 39.946 | 0.9 | -0.5 | -3.026 | -24.034 |
| He et al. | 2022 | 75.654 | 39.999 | 0.977 | -0.488 | -2.946 | 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 | 1.12 | 0.63 | 1.35 | 70 | 0.051 | 54 | â | â |
| Liu et al. | 2025 | 1.98 | 0.40 | â | 55 | â | â | â | â |
| Zhang et al. | 2024 | â | â | â | â | -0.167(1) | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 54(1) | â | â |
| Cavallo et al. | 2024 | 1.12 | 0.54 | â | 398 | 0.270 | â | â | â |
| Hunt & Reffert | 2023 | 1.04 | 0.72 | 1.35 | 86 | â | â | â | â |
| He et al. | 2022 | â | 1.10 | â | 50 | 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 59 along with CWNU_154.
Palma et al. (2025)
Part of multiple system G32, along with FSR_0744 and CWNU_154.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.99 (50th percentile).