CWNU 1773
0.11
UTI
0.0
CN
0.06
Cdens
0.25
CC3
0.13
Clit
1.0
Cdup
Nm (P>50%)
19
Core radius and density
3.7 [pc], 0.3 [pc-2]
- CN 0.0 Sparse
- Cdens 0.06 Very loose
- CC3 0.25 Low quality
- Clit 0.13 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 1773 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity parameter (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 | 74.56 | 44.561 | 0.442 | 1.396 | -2.377 | -14.19 |
| Yang et al. | 2025 | 74.642 | 44.562 | â | â | â | â |
| Zhang et al. | 2024 | 74.642 | 44.562 | â | â | â | â |
| Hunt & Reffert | 2024 | 74.642 | 44.562 | 0.455 | 1.336 | -2.378 | -14.159 |
| Cavallo et al. | 2024 | 74.48 | 44.538 | 0.451 | â | â | â |
| Hunt & Reffert | 2023 | 74.642 | 44.562 | 0.455 | 1.336 | -2.378 | -14.159 |
| He et al. | 2023 | 74.485 | 44.539 | 0.461 | 1.387 | -2.385 | -14.19 |
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 | 2.085 | 2.225 | 1.61 | 190 | -0.210 | 166 | â | â |
| Yang et al. | 2025 | â | â | â | 190 | -0.210(3) | â | â | â |
| Zhang et al. | 2024 | â | â | â | â | -0.224(1) | â | â | â |
| Hunt & Reffert | 2024 | 2.05 | 2.20 | 1.61 | 192 | â | 166(1) | â | â |
| Cavallo et al. | 2024 | 2.12 | 2.25 | â | 110 | 0.400 | â | â | â |
| Hunt & Reffert | 2023 | 2.05 | 2.20 | 1.61 | 191 | â | â | â | â |
| He et al. | 2023 | 2.14 | 2.75 | â | 141 | 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: 0.96 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.96 (50th percentile).