HSC 152
0.15
UTI
0.31
CN
0.15
Cdens
0.25
CC3
0.03
Clit
1.0
Cdup
Nm (P>50%)
31
Core radius and density
1.3 [pc], 0.7 [pc-2]
- CN 0.31 Poorly populated
- Cdens 0.15 Very loose
- CC3 0.25 Low quality
- Clit 0.03 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 152 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by moderate extinction. It is catalogued as an extremely metal-poor, 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.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 272.476 | -18.661 | 0.585 | 1.005 | 0.733 | -3.134 |
| Hunt & Reffert | 2024 | 272.44 | -18.646 | 0.603 | 1.004 | 0.734 | -29.544 |
| Cavallo et al. | 2024 | 272.467 | -18.659 | 0.599 | â | â | â |
| Hunt & Reffert | 2023 | 272.44 | -18.646 | 0.603 | 1.004 | 0.734 | -29.544 |
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 | 1.6 | 2.55 | 1.29 | 172 | -2.110 | 356 | â | â |
| Hunt & Reffert | 2024 | 1.60 | 2.55 | 1.29 | 172 | â | 356(1) | â | â |
| Cavallo et al. | 2024 | 1.47 | 3.25 | â | 339 | -2.110 | â | â | â |
| Hunt & Reffert | 2023 | 1.60 | 2.55 | 1.29 | 172 | 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 genetic pair P127, along with HSC_142.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.33 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.33 (50th percentile).