HSC 381
0.24
UTI
0.27
CN
0.23
Cdens
0.75
CC3
0.0
Clit
0.96
Cdup
Radius (P>50% members)
54.1 [arcmin]
- CN 0.27 Poorly populated
- Cdens 0.23 Very loose
- CC3 0.75 High quality
- Clit 0.0 Rarely studied
- Cdup 0.96 Unique
Overview
HSC 381 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 low extinction. It is catalogued as a near-solar metallicity, young cluster (see Parameters). It was recently reported in the literature.
Note: This is a unique object, which shares a very 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=0.96) 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
Young
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 270.961 | 19.467 | 3.227 | -1.162 | -8.033 | -16.73 |
| Zhang et al. | 2024 | 271.386 | 17.771 | â | â | â | â |
| Cavallo et al. | 2024 | 270.773 | 19.135 | 3.178 | â | â | â |
| Hunt & Reffert | 2023 | 271.386 | 17.771 | 3.161 | -1.036 | -8.11 | -17.045 |
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 |
|---|---|---|---|---|---|---|---|---|---|
| Zhang et al. | 2024 | â | â | â | â | 0.034* | â | â | â |
| Cavallo et al. | 2024 | 0.32 | 0.66 | â | 17 | -0.050 | â | â | â |
| Hunt & Reffert | 2023 | 0.31 | 0.21 | 0.83 | 31 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as a moving group.