CWNU 1787
0.21
UTI
0.3
CN
0.48
Cdens
0.25
CC3
0.0
Clit
1.0
Cdup
Stellar density (N50/rad)
2.4 [N/pc2]
- CN 0.3 Poorly populated
- Cdens 0.48 Loose
- CC3 0.25 Low quality
- Clit 0.0 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 1787 is a poorly populated, loose object of low 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, 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 | 93.151 | 14.525 | 0.41 | -0.058 | -3.085 | â |
| Zhang et al. | 2024 | 93.088 | 14.535 | â | â | â | â |
| Hunt & Reffert | 2024 | 93.088 | 14.535 | 0.4 | -0.059 | -3.076 | â |
| Cavallo et al. | 2024 | 93.152 | 14.529 | 0.398 | â | â | â |
| Hunt & Reffert | 2023 | 93.088 | 14.535 | 0.4 | -0.059 | -3.076 | â |
| He et al. | 2023 | 93.157 | 14.551 | 0.422 | -0.067 | -3.069 | 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 | 2.28 | 1.64 | 0.67 | 204 | -0.058 | 159 | â | â |
| Zhang et al. | 2024 | â | â | â | â | 0.124(1) | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 159(1) | â | â |
| Cavallo et al. | 2024 | 2.20 | 1.64 | â | 204 | -0.240 | â | â | â |
| Hunt & Reffert | 2023 | 2.28 | 1.58 | 0.67 | 152 | â | â | â | â |
| He et al. | 2023 | 2.40 | 1.65 | â | 316 | 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 classes: 1.00 (50th percentile), true positive (human-assigned).