HSC 431
0.17
UTI
0.0
CN
0.11
Cdens
0.75
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
1.5 [arcmin]
- CN 0.0 Sparse
- Cdens 0.11 Very loose
- CC3 0.75 High quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
HSC 431 is a sparse, very loose object of high C3 quality. Its parallax locates it at a very large* distance, above the mid-plane, affected by very high extinction. It is catalogued as an extremely massive, metal-rich, intermediate-age cluster (see Parameters). It was recently reported in the literature.
(*): The parallax distance estimate (~14.43 kpc) differs significantly from the median photometric distance (~7.74 kpc).
Note: This object shares a significant percentage of members with a later reported entry. See table with shared members information.
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.
Very distant
Very high extinction
Extremely massive
Metal-rich
Intermediate age
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 291.256 | 17.543 | 0.069 | -2.812 | -5.882 | 23.039 |
| Hunt & Reffert | 2024 | 291.243 | 17.543 | 0.074 | -2.837 | -5.905 | 21.683 |
| Cavallo et al. | 2024 | 291.289 | 17.566 | 0.059 | â | â | â |
| Hunt & Reffert | 2023 | 291.243 | 17.543 | 0.074 | -2.837 | -5.905 | 21.683 |
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 | 16273* | â | â |
| Cavallo et al. | 2024 | 4.15 | 5.70 | â | 27 | 0.590 | â | â | â |
| Hunt & Reffert | 2023 | 11.33 | 6.11 | 1.58 | 782 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Wood sample.