CWNU 488
0.38
UTI
0.34
CN
0.6
Cdens
0.75
CC3
0.1
Clit
1.0
Cdup
Nm (P>50%)
34
Core radius and density
0.7 [pc], 3.0 [pc-2]
- CN 0.34 Poorly populated
- Cdens 0.6 Moderately dense
- CC3 0.75 High quality
- Clit 0.1 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 488 is a poorly populated, moderately dense object of high C3 quality. Its parallax locates it at a moderate* distance, near the mid-plane, affected by moderate extinction. It is catalogued as a metal-poor, young cluster, but with a large variance across recent sources for the absorption, age, and metallicity parameters (see Parameters). It is rarely studied in the literature.
(*): The parallax distance estimate (~2.52 kpc) differs significantly from the median photometric distance (~3.72 kpc).
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 269.571 | -25.255 | 0.397 | 0.307 | -1.416 | â |
| Hunt & Reffert | 2024 | 269.568 | -25.258 | 0.392 | 0.291 | -1.422 | â |
| Cavallo et al. | 2024 | 269.57 | -25.265 | 0.391 | â | â | â |
| Hunt & Reffert | 2023 | 269.568 | -25.258 | 0.392 | 0.291 | -1.422 | â |
| He et al. | 2022 | 269.574 | -25.272 | 0.38 | 0.31 | -1.42 | 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 | 3.72 | 2.1 | 2.0 | 46 | -0.863 | 397 | â | â |
| Liu et al. | 2025 | 5.37 | 0.78 | â | 15 | â | â | â | â |
| Hunt & Reffert | 2024 | 2.29 | 2.10 | 2.00 | 120 | â | 397(1) | â | â |
| Cavallo et al. | 2024 | 5.11 | 2.81 | â | 46 | -2.020 | â | â | â |
| Hunt & Reffert | 2023 | 2.29 | 2.10 | 2.00 | 120 | â | â | â | â |
| He et al. | 2022 | 3.72 | 3.42 | â | 5 | 0.295 | 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 tidal capture (resonant trapping binary) 77 along with Ruprecht_138.
Palma et al. (2025)
Classified as genetic pair P207, along with Ruprecht_138.
Cavallo et al. (2024)
Bronze sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.88 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.88 (50th percentile).