HSC 1665
0.10
UTI
0.0
CN
0.12
Cdens
0.38
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
2.9 [arcmin]
- CN 0.0 Sparse
- Cdens 0.12 Very loose
- CC3 0.38 Low quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
HSC 1665 is a sparse, very loose object of low C3 quality. Its parallax locates it at a large* distance, below the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, young cluster (see Parameters). It was recently reported in the literature.
(*): The parallax distance estimate (~7.02 kpc) differs significantly from the median photometric distance (~5.36 kpc).
Note: This object shares a large 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
Moderate extinction
Massive
Near-solar metallicity
Young
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 99.606 | 0.743 | 0.142 | -0.251 | 0.367 | â |
| Hunt & Reffert | 2024 | 99.562 | 0.735 | 0.145 | -0.213 | 0.386 | 82.575 |
| Cavallo et al. | 2024 | 99.634 | 0.757 | 0.148 | â | â | â |
| Hunt & Reffert | 2023 | 99.562 | 0.735 | 0.145 | -0.213 | 0.386 | 82.575 |
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 | 1023* | â | â |
| Cavallo et al. | 2024 | 4.09 | 2.36 | â | 44 | 0.080 | â | â | â |
| Hunt & Reffert | 2023 | 6.63 | 2.69 | 2.38 | 19 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Silver sample.