HSC 1427
0.10
UTI
0.0
CN
0.12
Cdens
0.25
CC3
0.06
Clit
1.0
Cdup
Nm (P>50%)
24
Core radius and density
2.3 [pc], 0.6 [pc-2]
- CN 0.0 Sparse
- Cdens 0.12 Very loose
- CC3 0.25 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 1427 is a sparse, very 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, intermediate-age cluster, but with a large variance across recent sources for the absorption and age 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 | 81.27 | 24.459 | 1.333 | -1.821 | -5.008 | 14.315 |
| Hunt & Reffert | 2024 | 81.342 | 24.342 | 1.332 | -1.851 | -4.979 | 10.259 |
| Cavallo et al. | 2024 | 81.264 | 24.533 | 1.332 | â | â | â |
| Hunt & Reffert | 2023 | 81.342 | 24.342 | 1.332 | -1.851 | -4.979 | 10.259 |
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 | 0.71 | 2.11 | 0.89 | 137 | 0.270 | 104 | â | â |
| Liu et al. | 2025 | 1.08 | 0.63 | â | 398 | â | â | â | â |
| Hunt & Reffert | 2024 | 0.70 | 2.19 | 0.89 | 96 | â | 104(1) | â | â |
| Cavallo et al. | 2024 | 0.72 | 2.03 | â | 178 | 0.270 | â | â | â |
| Hunt & Reffert | 2023 | 0.70 | 2.19 | 0.89 | 96 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Liu et al. (2025)
Classified as tidal capture (resonant trapping binary) 194 along with HSC_1428.
Palma et al. (2025)
Part of multiple system G93, along with Gulliver_22, HSC_1441 and HSC_1428.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.99 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.99 (50th percentile).