HSC 2233
0.22
UTI
0.25
CN
0.15
Cdens
0.62
CC3
0.03
Clit
1.0
Cdup
Nm (P>50%)
25
Core radius and density
1.9 [pc], 0.7 [pc-2]
- CN 0.25 Poorly populated
- Cdens 0.15 Very loose
- CC3 0.62 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 2233 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a close distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young 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 | 146.981 | -50.437 | 1.02 | -7.189 | 2.551 | 21.893 |
| Hunt & Reffert | 2024 | 146.877 | -50.431 | 1.014 | -7.171 | 2.525 | 20.05 |
| Cavallo et al. | 2024 | 146.96 | -50.42 | 1.016 | â | â | â |
| Hunt & Reffert | 2023 | 146.877 | -50.431 | 1.014 | -7.171 | 2.525 | 20.05 |
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 | 0.96 | 1.39 | 0.73 | 83 | 0.250 | 67 | â | â |
| Hunt & Reffert | 2024 | 0.96 | 1.39 | 0.73 | 83 | â | 67(1) | â | â |
| Cavallo et al. | 2024 | 1.05 | 1.36 | â | 166 | 0.250 | â | â | â |
| Hunt & Reffert | 2023 | 0.96 | 1.40 | 0.73 | 83 | 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 G144, along with HSC_2234, UPK_549 and HSC_2232.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.29 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.29 (50th percentile).