HSC 427
0.22
UTI
0.25
CN
0.26
Cdens
0.5
CC3
0.03
Clit
1.0
Cdup
Nm (P>50%)
25
Core radius and density
1.0 [pc], 1.3 [pc-2]
- CN 0.25 Poorly populated
- Cdens 0.26 Loose
- CC3 0.5 Intermediate 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 427 is a poorly populated, loose object of intermediate C3 quality. Its parallax locates it at a very close distance, below the mid-plane, affected by low extinction. It is catalogued as a 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 | 317.104 | 1.788 | 4.333 | 13.214 | -7.951 | 5.82 |
| Zhang et al. | 2024 | 316.836 | 1.943 | â | â | â | â |
| Cavallo et al. | 2024 | 317.458 | 1.673 | 4.397 | â | â | â |
| Hunt & Reffert | 2023 | 316.836 | 1.943 | 4.363 | 13.2 | -7.876 | 2.237 |
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 | 0.23 | 0.335 | 0.78 | 198 | 0.096 | â | â | â |
| Zhang et al. | 2024 | â | â | â | â | -0.059(1) | â | â | â |
| Cavallo et al. | 2024 | 0.23 | 0.49 | â | 240 | 0.250 | â | â | â |
| Hunt & Reffert | 2023 | 0.23 | 0.18 | 0.78 | 156 | 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 tidal capture (resonant trapping pair) P52, along with HSC_460.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as moving group. CMD class: 0.14 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.14 (50th percentile).