CWNU 490
0.47
UTI
0.55
CN
0.46
Cdens
0.75
CC3
0.3
Clit
1.0
Cdup
Stellar density (N50/rad)
2.3 [N/pc2]
- CN 0.55 Moderately populated
- Cdens 0.46 Loose
- CC3 0.75 High quality
- Clit 0.3 Poorly 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 490 is a moderately populated, loose object of high C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the absorption parameter (see Parameters). It is poorly studied in the literature.
Note: This object shares a small percentage of members with a later reported entry. See table with shared members information.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 192.759 | -60.665 | 0.503 | -5.45 | -0.987 | 0.934 |
| Liu et al. | 2025 | 192.9 | -60.68 | 0.51 | -5.46 | -1.05 | 5.87 |
| Hunt & Reffert | 2024 | 192.904 | -60.681 | 0.508 | -5.456 | -1.046 | 5.867 |
| Cavallo et al. | 2024 | 192.982 | -60.835 | 0.507 | â | â | â |
| Hunt & Reffert | 2023 | 192.904 | -60.681 | 0.508 | -5.456 | -1.046 | 5.867 |
| He et al. | 2022 | 192.739 | -60.663 | 0.51 | -5.57 | -0.93 | -9.3 |
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 | 1.785 | 0.96 | 1.78 | 26 | -0.309 | 366 | â | â |
| Liu et al. | 2025 | 2.75 | 0.38 | â | 18 | â | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 366(1) | â | â |
| Cavallo et al. | 2024 | 1.70 | 1.00 | â | 19 | -0.200 | â | â | â |
| Hunt & Reffert | 2023 | 1.83 | 0.92 | 1.78 | 34 | â | â | â | â |
| He et al. | 2022 | 1.74 | 1.62 | â | 32 | -0.419 | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Liu et al. (2025)
Classified as primordial binary cluster 78 along with OC_0587, and of multiple system 27 along with OC_0587 and HSC_2550.
Palma et al. (2025)
Part of multiple system G159, along with OC_0587 and HSC_2550.
Cavallo et al. (2024)
Gold sample.