HSC 1850
0.24
UTI
0.47
CN
0.24
Cdens
0.5
CC3
0.0
Clit
1.0
Cdup
Nm (P>50%)
47
Core radius and density
1.9 [pc], 1.2 [pc-2]
- CN 0.47 Poorly populated
- Cdens 0.24 Very loose
- CC3 0.5 Intermediate 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 1850 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by low 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 | 112.01 | -19.021 | 1.841 | -7.399 | 5.601 | 38.873 |
| Cavallo et al. | 2024 | 112.013 | -19.135 | 1.851 | â | â | â |
| Hunt & Reffert | 2023 | 112.0 | -19.008 | 1.853 | -7.337 | 5.547 | 34.785 |
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 | 0.545 | 0.26 | 0.44 | 70 | -0.020 | â | â | â |
| Cavallo et al. | 2024 | 0.58 | 0.38 | â | 35 | -0.020 | â | â | â |
| Hunt & Reffert | 2023 | 0.51 | 0.14 | 0.44 | 105 | â | â | â | â |
Palma et al. (2025)
Classified as optical pair P446, along with HSC_1856.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as moving group. CMD class: 1.00 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).