HSC 242
0.19
UTI
0.25
CN
0.06
Cdens
0.12
CC3
0.25
Clit
1.0
Cdup
Radius (P>50% members)
268.6 [arcmin]
- CN 0.25 Poorly populated
- Cdens 0.06 Very loose
- CC3 0.12 Very low quality
- Clit 0.25 Poorly studied
- Cdup 1.0 Unique
Overview
HSC 242 is a poorly populated, very loose object of very low C3 quality. Its parallax locates it at a very close distance, above the mid-plane, affected by low 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.
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 | 251.968 | 11.039 | 8.429 | -5.795 | 14.838 | -39.116 |
| Hu & Soubiran | 2025 | 250.125 | 10.031 | â | â | â | â |
| Zhang et al. | 2024 | 247.846 | 9.216 | â | â | â | â |
| Cavallo et al. | 2024 | 250.124 | 10.031 | 8.792 | â | â | â |
| Hunt & Reffert | 2023 | 247.846 | 9.216 | 8.719 | -6.528 | 14.357 | -26.593 |
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 |
|---|---|---|---|---|---|---|---|---|---|
| Hu & Soubiran | 2025 | â | â | â | â | -0.320* | â | â | â |
| Zhang et al. | 2024 | â | â | â | â | 0.038* | â | â | â |
| Cavallo et al. | 2024 | 0.12 | 0.64 | â | 589 | 0.100 | â | â | â |
| Hunt & Reffert | 2023 | 0.12 | 0.04 | 0.28 | 119 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as a moving group.