CWNU 172
0.27
UTI
0.31
CN
0.34
Cdens
0.5
CC3
0.1
Clit
1.0
Cdup
Stellar density (N50/rad)
1.7 [N/pc2]
- CN 0.31 Poorly populated
- Cdens 0.34 Loose
- CC3 0.5 Intermediate 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 172 is a poorly populated, loose object of intermediate 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 metallicity parameter (see Parameters). It is rarely studied 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 | 109.235 | -1.796 | 0.979 | -2.459 | 0.129 | 19.616 |
| Zhang et al. | 2024 | 109.222 | -1.811 | â | â | â | â |
| Hunt & Reffert | 2024 | 109.222 | -1.811 | 0.973 | -2.43 | 0.183 | 19.33 |
| Cavallo et al. | 2024 | 109.168 | -1.764 | 0.97 | â | â | â |
| Hunt & Reffert | 2023 | 109.222 | -1.811 | 0.973 | -2.43 | 0.183 | 19.33 |
| He et al. | 2022 | 109.186 | -1.737 | 0.98 | -2.47 | 0.14 | 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 | 1.03 | 0.24 | 0.9 | 95 | 0.150 | 137 | â | â |
| Zhang et al. | 2024 | â | â | â | â | -0.135(1) | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 137(1) | â | â |
| Cavallo et al. | 2024 | 1.03 | 0.24 | â | 95 | 0.150 | â | â | â |
| Hunt & Reffert | 2023 | 0.97 | 0.14 | 0.90 | 121 | â | â | â | â |
| He et al. | 2022 | 1.10 | 0.38 | â | 63 | 0.374 | 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: 0.99 (50th percentile), true positive (human-assigned).
Hunt & Reffert (2023)
Classified as open cluster. CMD classes: 0.99 (50th percentile), true positive (human-assigned).