HSC 539
0.11
UTI
0.0
CN
0.04
Cdens
0.5
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
3.9 [arcmin]
- CN 0.0 Sparse
- Cdens 0.04 Very loose
- CC3 0.5 Intermediate quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
HSC 539 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a large distance, above the mid-plane, affected by high extinction. It is catalogued as a massive, 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 distant
High extinction
Massive
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 | 299.565 | 30.369 | 0.14 | -3.27 | -5.915 | -29.407 |
| Hunt & Reffert | 2024 | 299.503 | 30.348 | 0.143 | -3.251 | -5.912 | -44.442 |
| Cavallo et al. | 2024 | 299.541 | 30.349 | 0.146 | â | â | â |
| Hunt & Reffert | 2023 | 299.503 | 30.348 | 0.143 | -3.251 | -5.912 | -44.442 |
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 |
|---|---|---|---|---|---|---|---|---|---|
| Hunt & Reffert | 2024 | â | â | â | â | â | 1085* | â | â |
| Cavallo et al. | 2024 | 4.94 | 3.93 | â | 603 | -0.490 | â | â | â |
| Hunt & Reffert | 2023 | 6.39 | 3.99 | 2.01 | 241 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Silver sample.