HSC 2957
0.11
UTI
0.0
CN
0.19
Cdens
0.38
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
20.4 [arcmin]
- CN 0.0 Sparse
- Cdens 0.19 Very loose
- CC3 0.38 Low quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
HSC 2957 is a sparse, very loose object of low C3 quality. Its parallax locates it at a close distance, below the mid-plane, affected by low extinction. It is catalogued as a metal-poor, 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.
Close
Low extinction
Metal-poor
Intermediate age
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 276.082 | -37.132 | 1.32 | -0.635 | -5.049 | 9.034 |
| Cavallo et al. | 2024 | 276.252 | -36.897 | 1.362 | â | â | â |
| Hunt & Reffert | 2023 | 276.001 | -37.189 | 1.343 | -0.636 | -5.177 | 8.005 |
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 |
|---|---|---|---|---|---|---|---|---|---|
| Cavallo et al. | 2024 | 0.68 | 0.71 | â | 120 | -0.540 | â | â | â |
| Hunt & Reffert | 2023 | 0.70 | 0.21 | 0.66 | 86 | â | â | â | â |
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as a moving group.