CWNU 1899
0.21
UTI
0.0
CN
0.15
Cdens
0.75
CC3
0.06
Clit
1.0
Cdup
Nm (P>50%)
23
Core radius and density
2.4 [pc], 0.8 [pc-2]
- CN 0.0 Sparse
- Cdens 0.15 Very loose
- CC3 0.75 High 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 1899 is a sparse, very loose object of high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by high extinction. It is catalogued as a very metal-rich, very young 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 | 58.05 | 54.507 | 0.232 | -0.225 | -0.343 | â |
| Hunt & Reffert | 2024 | 58.041 | 54.494 | 0.243 | -0.23 | -0.342 | â |
| Cavallo et al. | 2024 | 58.063 | 54.506 | 0.243 | â | â | â |
| Hunt & Reffert | 2023 | 58.041 | 54.494 | 0.243 | -0.23 | -0.342 | â |
| He et al. | 2023 | 58.063 | 54.509 | 0.246 | -0.225 | -0.365 | 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 | 3.84 | 3.61 | 0.94 | 18 | 1.140 | 425 | â | â |
| Hunt & Reffert | 2024 | 3.84 | 3.61 | 0.94 | 18 | â | 425(1) | â | â |
| Cavallo et al. | 2024 | 3.52 | 3.00 | â | 91 | 1.140 | â | â | â |
| Hunt & Reffert | 2023 | 3.84 | 3.61 | 0.94 | 18 | â | â | â | â |
| He et al. | 2023 | 3.89 | 4.05 | â | 6 | 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).