HXHWL 45
(H21OC 45)
0.36
UTI
0.56
CN
0.56
Cdens
0.38
CC3
0.16
Clit
1.0
Cdup
Nm (P>50%)
61
Core radius and density
1.7 [pc], 2.8 [pc-2]
- CN 0.56 Moderately populated
- Cdens 0.56 Moderately dense
- CC3 0.38 Low quality
- Clit 0.16 Rarely studied
- Cdup 1.0 Unique
đĨ Members
đ Colab
đŦ Bayestar19
MOCA
đ CDS
đ Simbad
đ CDS (Îą, δ)
đ Simbad (Îą, δ)
MOCA
đ CDS
đ Simbad
đ CDS (Îą, δ)
đ Simbad (Îą, δ)
Overview
HXHWL 45 is a moderately populated, moderately dense object of low C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the absorption and metallicity parameters (see Parameters). It is rarely studied in the literature.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 350.356 | 58.366 | 1.0 | -0.37 | -0.916 | -21.222 |
| Zhang et al. | 2024 | 350.367 | 58.367 | â | â | â | â |
| Hunt & Reffert | 2024 | 350.367 | 58.367 | 0.995 | -0.322 | -0.95 | -20.547 |
| Cavallo et al. | 2024 | 350.304 | 58.357 | 0.998 | â | â | â |
| Hunt & Reffert | 2023 | 350.367 | 58.367 | 0.995 | -0.322 | -0.95 | -20.547 |
| He et al. | 2022 | 350.321 | 58.363 | 0.999 | -0.37 | -0.915 | â |
| He et al. | 2021 | 350.367 | 58.381 | 0.99 | -0.42 | -0.83 | 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] | Bfrac | BSS |
|---|---|---|---|---|---|---|---|---|---|
| UCC | 99999â | 0.96 | 2.195 | 0.85 | 68 | 0.119 | 174 | â | â |
| Liu et al. | 2025 | 2.51 | 0.78 | â | 68 | â | â | â | â |
| Zhang et al. | 2024 | â | â | â | â | -0.124(1) | â | â | â |
| Hunt & Reffert | 2024 | 0.96 | 2.13 | 0.85 | 68 | â | 174(1) | â | â |
| Cavallo et al. | 2024 | 1.04 | 2.26 | â | 68 | 0.360 | â | â | â |
| Hunt & Reffert | 2023 | 0.96 | 2.13 | 0.85 | 68 | â | â | â | â |
| He et al. | 2022 | â | 2.45 | â | 50 | â | â | â | â |
| He et al. | 2021 | 0.95 | 2.79 | â | 79 | 0.119 | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Liu et al. (2025)
Classified as primordial binary cluster 141 along with FSR_0435.
Palma et al. (2025)
Part of multiple system G83, along with FSR_0435, HSC_855 and HSC_888.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 1.00 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).