HSC 1843
0.11
UTI
0.0
CN
0.2
Cdens
0.38
CC3
0.0
Clit
1.0
Cdup
Stellar density (N50/rad)
1.0 [N/pc2]
- CN 0.0 Sparse
- Cdens 0.2 Very loose
- CC3 0.38 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 1843 is a sparse, very loose object of low C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by low extinction. It is catalogued as a metal-rich, intermediate-age 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 | 110.284 | -18.851 | 1.022 | -3.869 | 0.484 | 22.128 |
| Liu et al. | 2025 | 110.46 | -18.95 | 1.0 | -3.87 | 0.41 | 23.28 |
| Cavallo et al. | 2024 | 110.374 | -18.849 | 0.992 | â | â | â |
| Hunt & Reffert | 2023 | 110.462 | -18.945 | 1.004 | -3.868 | 0.407 | 23.279 |
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 | 1.09 | 0.15 | 0.38 | 175 | 0.910 | â | â | â |
| Liu et al. | 2025 | 1.15 | 0.15 | â | 100 | â | â | â | â |
| Cavallo et al. | 2024 | 1.09 | 0.04 | â | 309 | 0.910 | â | â | â |
| Hunt & Reffert | 2023 | 0.92 | 0.16 | 0.38 | 175 | â | â | â | â |
Liu et al. (2025)
Classified as primordial binary cluster 209 along with Theia_366, and of multiple system 60 along with NGC_2358 and Theia_366.
Palma et al. (2025)
Part of multiple system G215, along with Theia_366 and NGC_2358.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as a moving group.