HSC 1228
0.05
UTI
0.0
CN
0.1
Cdens
0.12
CC3
0.0
Clit
1.0
Cdup
Stellar density (N50/rad)
0.5 [N/pc2]
- CN 0.0 Sparse
- Cdens 0.1 Very loose
- CC3 0.12 Very low quality
- Clit 0.0 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 1228 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a close distance, near 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 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 | 62.488 | 44.639 | 1.447 | 0.029 | -3.939 | -5.362 |
| Zhang et al. | 2024 | 62.51 | 44.649 | â | â | â | â |
| Cavallo et al. | 2024 | 62.537 | 44.49 | 1.443 | â | â | â |
| Hunt & Reffert | 2023 | 62.51 | 44.649 | 1.441 | 0.012 | -3.979 | -1.0 |
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 | 0.67 | 1.22 | 0.7 | 112 | 0.138 | â | â | â |
| Zhang et al. | 2024 | â | â | â | â | -0.045(1) | â | â | â |
| Cavallo et al. | 2024 | 0.68 | 1.20 | â | 43 | 0.320 | â | â | â |
| Hunt & Reffert | 2023 | 0.66 | 1.24 | 0.70 | 182 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as a moving group.