HSC 2911

Click to load Aladin Lite
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

â„šī¸
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.

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.

Data

â„šī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 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 – – –
Hunt & Reffert 2023 258.32 -33.267 0.897 1.682 -1.813 -4.117

💡 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 99999– 1.05 0.64 1.52 10 0.160 518 – –
Liu et al. 2025 1.07 0.21 – 19 – – – –
Hunt & Reffert 2024 – – – – – 518(1) – –
Cavallo et al. 2024 0.99 0.73 – 10 0.160 – – –
Hunt & Reffert 2023 1.05 0.64 1.52 8 – – – –

(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.

Cluster % RA DEC Plx pmRA pmDE Rv UTI
CWWDL 14438 23.2 258.58 -33.16 0.91 1.78 -1.75 3.82 0.29
CWWDL 14435 2.9 258.04 -33.6 0.95 1.46 -1.88 7.3 0.21

💡 Note: The % column shows the percentage of members that HSC 2911 shares with each listed object.

Visualization

â„šī¸