HSC 25
0.05
UTI
0.0
CN
0.01
Cdens
0.25
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
3.4 [arcmin]
- CN 0.0 Sparse
- Cdens 0.01 Very loose
- CC3 0.25 Low quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
HSC 25 is a sparse, very loose object of low C3 quality. Its parallax locates it at a very large* distance, well above the mid-plane, affected by very high extinction. It is catalogued as an extremely massive, intermediate-age cluster (see Parameters). It was recently reported in the literature.
(*): The parallax distance estimate (~20.41 kpc) differs significantly from the median photometric distance (~11.72 kpc).
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.
Extremely distant
Very high extinction
Extremely massive
Intermediate age
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 265.395 | -25.692 | 0.049 | -5.876 | -6.185 | 84.091 |
| Hunt & Reffert | 2024 | 265.392 | -25.702 | 0.053 | -5.898 | -6.197 | â |
| Hunt & Reffert | 2023 | 265.392 | -25.702 | 0.053 | -5.898 | -6.197 | 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] | Bfr | BSS |
|---|---|---|---|---|---|---|---|---|---|
| Hunt & Reffert | 2024 | â | â | â | â | â | 34720* | â | â |
| Hunt & Reffert | 2023 | 11.72 | 5.72 | 1.63 | 800 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
