CWNU 1273
0.24
UTI
0.45
CN
0.14
Cdens
0.5
CC3
0.06
Clit
1.0
Cdup
Nm (P>50%)
45
Core radius and density
2.7 [pc], 0.7 [pc-2]
- CN 0.45 Poorly populated
- 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 1273 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by low 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 | 115.046 | -21.968 | 0.36 | -3.217 | 3.146 | 36.91 |
| Hunt & Reffert | 2024 | 115.049 | -22.005 | 0.361 | -3.21 | 3.135 | 24.112 |
| Cavallo et al. | 2024 | 115.044 | -21.976 | 0.359 | â | â | â |
| Hunt & Reffert | 2023 | 115.049 | -22.005 | 0.361 | -3.21 | 3.135 | 24.112 |
| He et al. | 2023 | 115.068 | -21.97 | 0.363 | -3.228 | 3.154 | 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 | 2.43 | 0.945 | 1.43 | 163 | 0.320 | 161 | â | â |
| Hunt & Reffert | 2024 | 2.43 | 0.90 | 1.43 | 163 | â | 161(1) | â | â |
| Cavallo et al. | 2024 | 2.43 | 0.99 | â | 204 | 0.320 | â | â | â |
| Hunt & Reffert | 2023 | 2.43 | 0.90 | 1.43 | 163 | â | â | â | â |
| He et al. | 2023 | 2.45 | 1.25 | â | 35 | 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 (not dynamically associated) P92, along with HSC_1893.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.99 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.99 (50th percentile).