HSC 1239
0.13
UTI
0.0
CN
0.27
Cdens
0.38
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
31.4 [arcmin]
- CN 0.0 Sparse
- Cdens 0.27 Loose
- CC3 0.38 Low quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
HSC 1239 is a sparse, loose object of low C3 quality. Its parallax locates it at a very close distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, old 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
Moderate extinction
Near-solar metallicity
Old
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 57.249 | 39.125 | 2.328 | 8.192 | -7.652 | 3.434 |
| Cavallo et al. | 2024 | 56.992 | 39.282 | 2.319 | â | â | â |
| Hunt & Reffert | 2023 | 57.401 | 38.957 | 2.311 | 8.153 | -7.636 | -7.349 |
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 | 0.55 | 0.70 | â | 5012 | 0.400 | â | â | â |
| Hunt & Reffert | 2023 | 0.40 | 1.57 | 1.04 | 6 | â | â | â | â |
Cavallo et al. (2024)
Wood sample.
Hunt & Reffert (2024)
Classified as a moving group.