HSC 1698
0.17
UTI
0.0
CN
0.34
Cdens
0.38
CC3
0.06
Clit
1.0
Cdup
Nm (P>50%)
24
Core radius and density
1.2 [pc], 1.7 [pc-2]
- CN 0.0 Sparse
- Cdens 0.34 Loose
- CC3 0.38 Low quality
- Clit 0.06 Rarely studied
- Cdup 1.0 Unique
đĨ Members
đ Colab
đŦ Bayestar19
MOCA
đ CDS
đ Simbad
đ CDS (Îą, δ)
đ Simbad (Îą, δ)
MOCA
đ CDS
đ Simbad
đ CDS (Îą, δ)
đ Simbad (Îą, δ)
Overview
HSC 1698 is a sparse, loose object of low C3 quality. Its parallax locates it at a close distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, very young cluster, but with a large variance across recent sources for the age and metallicity parameters (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.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 91.803 | -8.518 | 1.227 | -3.142 | 1.256 | 33.179 |
| Zhang et al. | 2024 | 91.792 | -8.528 | â | â | â | â |
| Hunt & Reffert | 2024 | 91.792 | -8.528 | 1.23 | -3.157 | 1.27 | 33.149 |
| Cavallo et al. | 2024 | 91.786 | -8.542 | 1.228 | â | â | â |
| Hunt & Reffert | 2023 | 91.792 | -8.528 | 1.23 | -3.157 | 1.27 | 33.149 |
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] | Bfrac | BSS |
|---|---|---|---|---|---|---|---|---|---|
| UCC | 99999â | 0.78 | 1.79 | 1.65 | 11 | 0.180 | 54 | â | â |
| Zhang et al. | 2024 | â | â | â | â | -0.110(1) | â | â | â |
| Hunt & Reffert | 2024 | 0.78 | 1.79 | 1.65 | 11 | â | 54(1) | â | â |
| Cavallo et al. | 2024 | 1.12 | 0.80 | â | 245 | 0.470 | â | â | â |
| Hunt & Reffert | 2023 | 0.78 | 1.79 | 1.65 | 11 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Palma et al. (2025)
Classified as optical pair P615, along with OC_0361.
Cavallo et al. (2024)
Wood sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.05 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.05 (50th percentile).