HSC 2251
0.14
UTI
0.29
CN
0.11
Cdens
0.5
CC3
0.0
Clit
0.79
Cdup
Radius (P>50% members)
61.1 [arcmin]
- CN 0.29 Poorly populated
- Cdens 0.11 Very loose
- CC3 0.5 Intermediate quality
- Clit 0.0 Rarely studied
- Cdup 0.79 Very likely unique
Overview
HSC 2251 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a very close distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It was recently reported in the literature.
Note: This is very likely a unique object, which shares a small percentage of members with at least one previously reported entry. See table with shared members information.
â ī¸ Warning: the low UTI value and no obvious signs of duplication (Cdup=0.79) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.
Very close
Low extinction
Near-solar metallicity
Intermediate age
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 151.208 | -44.023 | 2.441 | -0.694 | -0.108 | -8.052 |
| Cavallo et al. | 2024 | 151.251 | -44.276 | 2.432 | â | â | â |
| Hunt & Reffert | 2023 | 154.881 | -45.523 | 2.429 | -0.591 | -0.173 | -8.222 |
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 | 0.41 | 0.34 | â | 224 | 0.050 | â | â | â |
| Hunt & Reffert | 2023 | 0.38 | 0.09 | 0.29 | 535 | â | â | â | â |
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as a moving group.