HXHWL 31
0.56
UTI
0.42
CN
1.0
Cdens
0.75
CC3
0.31
Clit
1.0
Cdup
Radius (P>50% members)
3.8 [arcmin]
- CN 0.42 Poorly populated
- Cdens 1.0 Very dense
- CC3 0.75 High quality
- Clit 0.31 Poorly studied
- Cdup 1.0 Unique
Overview
HXHWL 31 is a poorly populated, very dense object of high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age and metallicity parameters (see Parameters). It is poorly studied in the literature.
Note: This object shares a large percentage of members with a later reported entry. See table with shared members information.
Relatively 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 | 314.983 | 45.342 | 0.497 | -2.484 | -4.574 | â |
| Hu & Soubiran | 2025 | 314.998 | 45.336 | â | â | â | â |
| Hunt & Reffert | 2024 | 314.988 | 45.335 | 0.508 | -2.488 | -4.545 | â |
| Cavallo et al. | 2024 | 314.998 | 45.336 | 0.507 | â | â | â |
| Hunt & Reffert | 2023 | 314.988 | 45.335 | 0.508 | -2.488 | -4.545 | â |
| He et al. | 2021 | 314.982 | 45.339 | 0.49 | -2.51 | -4.52 | â |
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 | -0.260* | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 253* | â | â |
| Cavallo et al. | 2024 | 2.07 | 1.69 | â | 603 | 0.330 | â | â | â |
| Hunt & Reffert | 2023 | 1.89 | 1.79 | 1.42 | 89 | â | â | â | â |
| He et al. | 2021 | 1.58 | 2.04 | â | 138 | 0.274 | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.