HSC 1581
0.10
UTI
0.0
CN
0.13
Cdens
0.38
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
9.9 [arcmin]
- CN 0.0 Sparse
- Cdens 0.13 Very loose
- CC3 0.38 Low quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
HSC 1581 is a sparse, very loose object of low C3 quality. Its parallax locates it at a relatively close distance, below the mid-plane, affected by low extinction. It is catalogued as an 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.
Relatively close
Low extinction
Intermediate age
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 90.045 | 8.567 | 0.511 | 0.302 | -3.35 | 43.179 |
| Hunt & Reffert | 2024 | 90.066 | 8.566 | 0.51 | 0.305 | -3.318 | â |
| Hunt & Reffert | 2023 | 90.066 | 8.566 | 0.51 | 0.305 | -3.318 | 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 | 56* | â | â |
| Hunt & Reffert | 2023 | 1.83 | 0.56 | 0.72 | 300 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
