CWNU 1987
0.16
UTI
0.0
CN
0.16
Cdens
0.62
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
10.4 [arcmin]
- CN 0.0 Sparse
- Cdens 0.16 Very loose
- CC3 0.62 Intermediate quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
CWNU 1987 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by moderate extinction. It is catalogued as an intermediate-age 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.
Relatively close
Moderate extinction
Intermediate age
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 323.819 | 60.01 | 0.592 | -2.962 | -3.604 | -37.868 |
| Hunt & Reffert | 2023 | 323.873 | 60.008 | 0.593 | -2.96 | -3.597 | -31.2 |
| He et al. | 2023 | 323.76 | 60.063 | 0.596 | -2.961 | -3.598 | -37.9 |
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] | Bfr | BSS |
|---|---|---|---|---|---|---|---|---|---|
| Hunt & Reffert | 2023 | 1.63 | 1.82 | 0.32 | 698 | â | â | â | â |
| He et al. | 2023 | 1.58 | 1.95 | â | 794 | â | â | â | â |
Hunt & Reffert (2024)
Classified as a moving group.