HSC 641
0.23
UTI
0.25
CN
0.15
Cdens
0.75
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
87.8 [arcmin]
- CN 0.25 Poorly populated
- Cdens 0.15 Very loose
- CC3 0.75 High quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
HSC 641 is a poorly populated, very loose object of high C3 quality. Its parallax locates it at a very close distance, above the mid-plane, affected by high extinction. It is catalogued as an old cluster (see Parameters). It was recently reported in the literature.
Note: This object shares a moderate percentage of members with at least one entry reported in the same catalogue. 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 close
High extinction
Old
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 297.04 | 51.629 | 4.437 | 9.084 | 2.548 | -21.544 |
| Hunt & Reffert | 2023 | 295.85 | 48.907 | 4.501 | 8.991 | 2.479 | -21.711 |
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 | 2023 | 0.23 | 3.07 | 0.79 | 2404 | â | â | â | â |
Hunt & Reffert (2024)
Classified as a moving group.