HSC 139
0.05
UTI
0.0
CN
0.02
Cdens
0.25
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
57.0 [arcmin]
- CN 0.0 Sparse
- Cdens 0.02 Very loose
- CC3 0.25 Low quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
HSC 139 is a sparse, very loose object of low C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by moderate 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.
Close
Moderate 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 | 277.788 | -21.215 | 1.932 | -3.188 | -8.635 | 8.83 |
| Cavallo et al. | 2024 | 277.723 | -21.22 | 1.956 | â | â | â |
| Hunt & Reffert | 2023 | 277.614 | -22.367 | 1.955 | -3.164 | -8.585 | 9.411 |
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 | 0.51 | 1.36 | â | 204 | -0.140 | â | â | â |
| Hunt & Reffert | 2023 | 0.49 | 0.86 | 0.34 | 235 | â | â | â | â |
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as a moving group.