CWNU 1577
0.21
UTI
0.3
CN
0.13
Cdens
0.5
CC3
0.06
Clit
1.0
Cdup
Nm (P>50%)
30
Core radius and density
1.6 [pc], 0.6 [pc-2]
- CN 0.3 Poorly populated
- Cdens 0.13 Very loose
- CC3 0.5 Intermediate 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 1577 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by very high extinction. It is catalogued as a metal-rich, very young cluster (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 | 282.674 | 4.248 | 0.734 | 0.501 | -4.48 | 72.902 |
| Hunt & Reffert | 2024 | 282.627 | 4.242 | 0.706 | 0.448 | -4.543 | 72.874 |
| Cavallo et al. | 2024 | 282.634 | 4.275 | 0.715 | â | â | â |
| Hunt & Reffert | 2023 | 282.627 | 4.242 | 0.706 | 0.448 | -4.543 | 72.874 |
| He et al. | 2023 | 282.688 | 4.339 | 0.741 | 0.501 | -4.464 | 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 | 1.32 | 5.66 | 2.07 | 6 | 0.830 | 710 | â | â |
| Hunt & Reffert | 2024 | 1.32 | 6.57 | 2.07 | 7 | â | 710(1) | â | â |
| Cavallo et al. | 2024 | 2.21 | 4.69 | â | 6 | 0.830 | â | â | â |
| Hunt & Reffert | 2023 | 1.32 | 6.57 | 2.07 | 7 | â | â | â | â |
| He et al. | 2023 | 1.23 | 4.75 | â | 3 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Cavallo et al. (2024)
Bronze sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.96 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.96 (50th percentile).