CWNU 1803
0.09
UTI
0.0
CN
0.07
Cdens
0.25
CC3
0.06
Clit
1.0
Cdup
Nm (P>50%)
21
Core radius and density
1.9 [pc], 0.3 [pc-2]
- CN 0.0 Sparse
- Cdens 0.07 Very loose
- CC3 0.25 Low 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
CWNU 1803 is a sparse, very loose object of low C3 quality. Its parallax locates it at a relatively close distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (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 | 109.22 | -22.784 | 0.51 | -2.337 | 3.022 | 74.877 |
| Hunt & Reffert | 2024 | 109.152 | -22.777 | 0.512 | -2.328 | 3.024 | â |
| Cavallo et al. | 2024 | 109.228 | -22.796 | 0.511 | â | â | â |
| Hunt & Reffert | 2023 | 109.152 | -22.777 | 0.512 | -2.328 | 3.024 | â |
| He et al. | 2023 | 109.208 | -22.806 | 0.523 | -2.36 | 3.027 | 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 | 1.845 | 0.695 | 0.37 | 108 | 0.120 | 65 | â | â |
| Hunt & Reffert | 2024 | 1.75 | 0.67 | 0.37 | 149 | â | 65(1) | â | â |
| Cavallo et al. | 2024 | 1.94 | 0.72 | â | 66 | 0.120 | â | â | â |
| Hunt & Reffert | 2023 | 1.75 | 0.67 | 0.37 | 149 | â | â | â | â |
| He et al. | 2023 | 2.00 | 1.10 | â | 50 | 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 class: 0.99 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.99 (50th percentile).