HSC 1840
0.14
UTI
0.25
CN
0.2
Cdens
0.25
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
62.8 [arcmin]
- CN 0.25 Poorly populated
- Cdens 0.2 Very loose
- CC3 0.25 Low quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
HSC 1840 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a very close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, 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.
Very close
Low extinction
Near-solar metallicity
Intermediate age
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 100.994 | -23.85 | 3.615 | -6.978 | 2.105 | 13.426 |
| Cavallo et al. | 2024 | 100.536 | -24.408 | 3.661 | â | â | â |
| Hunt & Reffert | 2023 | 100.906 | -22.902 | 3.658 | -6.827 | 2.068 | 13.899 |
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] | Bfr | BSS |
|---|---|---|---|---|---|---|---|---|---|
| Cavallo et al. | 2024 | 0.28 | 0.45 | â | 234 | 0.380 | â | â | â |
| Hunt & Reffert | 2023 | 0.27 | 0.08 | 0.37 | 163 | â | â | â | â |
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as a moving group.