HSC 622
0.15
UTI
0.32
CN
0.04
Cdens
0.25
CC3
0.06
Clit
1.0
Cdup
Nm (P>50%)
32
Core radius and density
3.1 [pc], 0.2 [pc-2]
- CN 0.32 Poorly populated
- Cdens 0.04 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 622 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 a near-solar metallicity, very young 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 | 307.929 | 40.716 | 0.778 | -0.16 | -3.255 | -2.849 |
| Zhang et al. | 2024 | 307.863 | 40.732 | â | â | â | â |
| Hunt & Reffert | 2024 | 307.863 | 40.732 | 0.762 | -0.095 | -3.248 | -15.627 |
| Cavallo et al. | 2024 | 308.157 | 40.789 | 0.763 | â | â | â |
| Hunt & Reffert | 2023 | 307.863 | 40.732 | 0.762 | -0.095 | -3.248 | -15.627 |
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 | 1.23 | 2.55 | 2.63 | 11 | -0.115 | 112 | â | â |
| Zhang et al. | 2024 | â | â | â | â | -0.389(1) | â | â | â |
| Hunt & Reffert | 2024 | 1.23 | 2.55 | 2.63 | 11 | â | 112(1) | â | â |
| Cavallo et al. | 2024 | 1.45 | 3.10 | â | 18 | 0.160 | â | â | â |
| Hunt & Reffert | 2023 | 1.23 | 2.55 | 2.63 | 11 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Palma et al. (2025)
Part of multiple system G186, along with QC_1, HSC_620 and CWNU_455.
Cavallo et al. (2024)
Silver sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.18 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.18 (50th percentile).