HSC 1500
0.10
UTI
0.0
CN
0.06
Cdens
0.25
CC3
0.1
Clit
1.0
Cdup
Nm (P>50%)
21
Core radius and density
3.7 [pc], 0.3 [pc-2]
- CN 0.0 Sparse
- Cdens 0.06 Very loose
- CC3 0.25 Low quality
- Clit 0.1 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 1500 is a sparse, very loose object of low C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by low extinction. It is catalogued as a low-mass, near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity parameter (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 | 94.94 | 23.097 | 0.74 | 1.584 | -4.737 | 13.035 |
| Yang et al. | 2025 | 94.956 | 23.143 | â | â | â | â |
| Zhang et al. | 2024 | 94.956 | 23.143 | â | â | â | â |
| Hunt & Reffert | 2024 | 94.956 | 23.143 | 0.719 | 1.592 | -4.689 | 17.616 |
| Cavallo et al. | 2024 | 95.119 | 22.829 | 0.727 | â | â | â |
| Hunt & Reffert | 2023 | 94.956 | 23.143 | 0.719 | 1.592 | -4.689 | 17.616 |
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 | 1.27 | 0.7 | 0.23 | 654 | -0.070 | 44 | â | â |
| Yang et al. | 2025 | â | â | â | 661 | -0.070(3) | â | â | â |
| Zhang et al. | 2024 | â | â | â | â | -0.076(1) | â | â | â |
| Hunt & Reffert | 2024 | 1.27 | 0.70 | 0.23 | 654 | â | 44(1) | â | â |
| Cavallo et al. | 2024 | 1.39 | 0.95 | â | 380 | 0.330 | â | â | â |
| Hunt & Reffert | 2023 | 1.27 | 0.69 | 0.23 | 653 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 1.00 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).