CWNU 1842
0.24
UTI
0.26
CN
0.17
Cdens
0.5
CC3
0.12
Clit
1.0
Cdup
Nm (P>50%)
26
Core radius and density
2.6 [pc], 0.8 [pc-2]
- CN 0.26 Poorly populated
- Cdens 0.17 Very loose
- CC3 0.5 Intermediate quality
- Clit 0.12 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 1842 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a relatively close 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 age 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 | 251.739 | -48.776 | 0.802 | 0.605 | -2.205 | -1.617 |
| Hunt & Reffert | 2024 | 251.699 | -48.822 | 0.808 | 0.641 | -2.177 | 1.911 |
| Cavallo et al. | 2024 | 251.806 | -48.759 | 0.806 | â | â | â |
| Hunt & Reffert | 2023 | 251.699 | -48.822 | 0.808 | 0.641 | -2.177 | 1.911 |
| He et al. | 2023 | 251.695 | -48.807 | 0.8 | 0.596 | -2.198 | 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 | 1.16 | 2.165 | 2.13 | 116 | -0.050 | 197 | â | â |
| Hunt & Reffert | 2024 | 1.16 | 2.13 | 2.13 | 95 | â | 197(1) | â | â |
| Cavallo et al. | 2024 | 1.10 | 2.42 | â | 138 | -0.050 | â | â | â |
| Hunt & Reffert | 2023 | 1.16 | 2.13 | 2.13 | 95 | â | â | â | â |
| He et al. | 2023 | 1.20 | 2.20 | â | 562 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Palma et al. (2025)
Part of multiple system G165, along with HSC_2785, HSC_2778, NGC_6134, NGC_6193, Theia_1643 and NGC_6204.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.84 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.84 (50th percentile).