CWNU 249
0.15
UTI
0.0
CN
0.14
Cdens
0.5
CC3
0.06
Clit
1.0
Cdup
Nm (P>50%)
21
Core radius and density
2.3 [pc], 0.7 [pc-2]
- CN 0.0 Sparse
- Cdens 0.14 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 249 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by moderate 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 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 | 240.563 | -54.898 | 0.866 | -3.474 | -5.857 | -40.329 |
| Hunt & Reffert | 2024 | 240.566 | -54.873 | 0.845 | -3.485 | -5.903 | -38.864 |
| Cavallo et al. | 2024 | 240.6 | -54.915 | 0.847 | â | â | â |
| Hunt & Reffert | 2023 | 240.566 | -54.873 | 0.845 | -3.485 | -5.903 | -38.864 |
| He et al. | 2022 | 240.654 | -54.898 | 0.88 | -3.51 | -5.72 | 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 | 1.11 | 1.505 | 0.5 | 330 | 0.065 | 140 | â | â |
| Hunt & Reffert | 2024 | 1.11 | 1.55 | 0.50 | 159 | â | 140(1) | â | â |
| Cavallo et al. | 2024 | 1.18 | 0.76 | â | 933 | 0.010 | â | â | â |
| Hunt & Reffert | 2023 | 1.11 | 1.55 | 0.50 | 159 | â | â | â | â |
| He et al. | 2022 | 1.10 | 1.46 | â | 501 | 0.119 | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Cavallo et al. (2024)
Silver 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).