HSC 2505
0.00
UTI
0.76
CN
0.86
Cdens
1.0
CC3
0.1
Clit
0.0
Cdup
Nm (P>50%)
121
Core radius and density
2.1 [pc], 4.3 [pc-2]
- CN 0.76 Rich
- Cdens 0.86 Dense
- CC3 1.0 Very high quality
- Clit 0.1 Rarely studied
- Cdup 0.0 Very likely duplicate
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
HSC 2505 is a rich, dense object of very high C3 quality. Its parallax locates it at a very close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, very young cluster, but with a large variance across recent sources for the absorption and age parameters (see Parameters). It was recently reported in the literature.
â ī¸ Warning: This is very likely a duplicate object, which shares a large 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 | 185.584 | -64.049 | 9.332 | -37.8 | -10.726 | 12.405 |
| Liu et al. | 2025 | 185.02 | -64.1 | 9.35 | -37.79 | -10.81 | 11.78 |
| Swiggum et al. | 2024 | 185.021 | -64.097 | 9.352 | -37.789 | -10.811 | 12.139 |
| Hunt & Reffert | 2024 | 185.021 | -64.097 | 9.352 | -37.789 | -10.811 | 11.785 |
| Cavallo et al. | 2024 | 185.649 | -64.273 | 9.351 | â | â | â |
| Hunt & Reffert | 2023 | 185.021 | -64.097 | 9.352 | -37.789 | -10.811 | 11.785 |
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 | 0.1 | 0.21 | 0.47 | 7 | 0.260 | 70 | â | â |
| Liu et al. | 2025 | 0.10 | 0.05 | â | 14 | â | â | â | â |
| Swiggum et al. | 2024 | 0.11 | â | â | 7 | â | 88 | â | â |
| Hunt & Reffert | 2024 | 0.10 | 0.21 | 0.47 | 7 | â | 52(1) | â | â |
| Cavallo et al. | 2024 | 0.11 | 1.15 | â | 52 | 0.260 | â | â | â |
| Hunt & Reffert | 2023 | 0.10 | 0.21 | 0.47 | 7 | â | 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 232 along with HSC_2468, and as primordial binary cluster 233 along with HSC_2523, and of multiple system 67 along with HSC_2468, HSC_2523 and HSC_2515.
Cavallo et al. (2024)
Silver 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).