HSC 2911
0.46
UTI
0.6
CN
0.93
Cdens
1.0
CC3
0.25
Clit
0.77
Cdup
Stellar density (N50/rad)
4.6 [N/pc2]
- CN 0.6 Moderately populated
- Cdens 0.93 Very dense
- CC3 1.0 Very high quality
- Clit 0.25 Poorly studied
- Cdup 0.77 Very likely unique
Overview
HSC 2911 is a moderately populated, very dense object of very high C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, very young cluster (see Parameters). It was recently reported in the literature.
Note: This is very likely a unique object, which shares a small percentage of members with at least one previously reported entry. See table with shared members information.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 258.251 | -33.286 | 0.889 | 1.728 | -1.813 | 7.42 |
| Liu et al. | 2025 | 258.32 | -33.27 | 0.9 | 1.68 | -1.81 | -4.12 |
| Hunt & Reffert | 2024 | 258.32 | -33.267 | 0.897 | 1.682 | -1.813 | -4.117 |
| Cavallo et al. | 2024 | 258.195 | -33.363 | 0.894 | â | â | â |
| Hunt & Reffert | 2023 | 258.32 | -33.267 | 0.897 | 1.682 | -1.813 | -4.117 |
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 | 1.05 | 0.64 | 1.52 | 10 | 0.160 | 518 | â | â |
| Liu et al. | 2025 | 1.07 | 0.21 | â | 19 | â | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 518(1) | â | â |
| Cavallo et al. | 2024 | 0.99 | 0.73 | â | 10 | 0.160 | â | â | â |
| Hunt & Reffert | 2023 | 1.05 | 0.64 | 1.52 | 8 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
MOCA


Liu et al. (2025)
Classified as primordial binary cluster 32 along with BH_221, and as primordial binary cluster 389 along with UFMG_65, and of multiple system 16 along with UFMG_65 and BH_221.
Palma et al. (2025)
Part of multiple system G14, along with CWNU_170, UFMG_65 and BH_221.
Cavallo et al. (2024)
Gold sample.