HSC 2056
0.21
UTI
0.31
CN
0.1
Cdens
0.5
CC3
0.06
Clit
1.0
Cdup
Stellar density (N50/rad)
0.5 [N/pc2]
- CN 0.31 Poorly populated
- Cdens 0.1 Very loose
- CC3 0.5 Intermediate 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 2056 is a poorly populated, very 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, young cluster, but with a large variance across recent sources for the absorption 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 | 114.588 | -43.607 | 2.246 | -5.924 | 5.79 | 12.459 |
| Liu et al. | 2025 | 114.55 | -43.44 | 2.28 | -5.93 | 5.86 | 11.53 |
| Swiggum et al. | 2024 | 114.554 | -43.436 | 2.277 | -5.927 | 5.86 | 12.459 |
| Cavallo et al. | 2024 | 114.399 | -43.5 | 2.284 | â | â | â |
| Hunt & Reffert | 2023 | 114.554 | -43.436 | 2.277 | -5.927 | 5.86 | 11.526 |
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 | 0.445 | 0.59 | 0.94 | 26 | -0.150 | 66 | â | â |
| Liu et al. | 2025 | 0.58 | 0.15 | â | 25 | â | â | â | â |
| Swiggum et al. | 2024 | 0.43 | â | â | 27 | â | 66 | â | â |
| Cavallo et al. | 2024 | 0.46 | 1.07 | â | 16 | -0.150 | â | â | â |
| Hunt & Reffert | 2023 | 0.43 | 0.59 | 0.94 | 27 | â | â | â | â |
Liu et al. (2025)
Classified as primordial binary cluster 216 along with CWNU_1069, and of multiple system 29 along with CWNU_1069 and OC_0470.
Palma et al. (2025)
Part of multiple system G27, along with OC_0470 and CWNU_1069.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as moving group. CMD class: 0.98 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.98 (50th percentile).