HSC 2031
0.16
UTI
0.0
CN
0.03
Cdens
0.75
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
5.6 [arcmin]
- CN 0.0 Sparse
- Cdens 0.03 Very loose
- CC3 0.75 High quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
HSC 2031 is a sparse, very loose object of high C3 quality. Its parallax locates it at a large* distance, above the mid-plane, affected by moderate extinction. It is catalogued as a metal-poor, intermediate-age cluster (see Parameters). It was recently reported in the literature.
(*): The parallax distance estimate (~6.53 kpc) differs significantly from the median photometric distance (~4.50 kpc).
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.
Distant
Moderate extinction
Metal-poor
Intermediate age
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 126.078 | -33.535 | 0.153 | -2.248 | 2.303 | 126.239 |
| Hunt & Reffert | 2024 | 126.141 | -33.544 | 0.162 | -2.257 | 2.305 | 126.03 |
| Cavallo et al. | 2024 | 126.062 | -33.436 | 0.162 | â | â | â |
| Hunt & Reffert | 2023 | 126.141 | -33.544 | 0.162 | -2.257 | 2.305 | 126.03 |
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 | 150* | â | â |
| Cavallo et al. | 2024 | 3.66 | 1.35 | â | 170 | -0.570 | â | â | â |
| Hunt & Reffert | 2023 | 5.34 | 1.02 | 1.91 | 348 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.