CWNU 1619
0.23
UTI
0.33
CN
0.34
Cdens
0.5
CC3
0.0
Clit
1.0
Cdup
Stellar density (N50/rad)
1.7 [N/pc2]
- CN 0.33 Poorly populated
- Cdens 0.34 Loose
- CC3 0.5 Intermediate quality
- Clit 0.0 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 1619 is a poorly populated, loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by very high 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 | 256.567 | -42.424 | 0.389 | -0.839 | -2.567 | 0.9 |
| Hunt & Reffert | 2024 | 256.568 | -42.428 | 0.373 | -0.794 | -2.577 | 0.91 |
| Cavallo et al. | 2024 | 256.573 | -42.431 | 0.373 | â | â | â |
| Hunt & Reffert | 2023 | 256.568 | -42.428 | 0.373 | -0.794 | -2.577 | 0.91 |
| He et al. | 2023 | 256.591 | -42.432 | 0.412 | -0.836 | -2.553 | 0.9 |
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 | 2.47 | 5.11 | 1.67 | 141 | -0.130 | 875 | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 875(1) | â | â |
| Cavallo et al. | 2024 | 2.83 | 5.11 | â | 141 | -0.130 | â | â | â |
| Hunt & Reffert | 2023 | 2.47 | 5.29 | 1.67 | 75 | â | â | â | â |
| He et al. | 2023 | 2.14 | 5.10 | â | 447 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Palma et al. (2025)
Classified as optical pair P322, along with Teutsch_84.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.98 (50th percentile).