HSC 915
0.24
UTI
0.0
CN
0.43
Cdens
0.62
CC3
0.06
Clit
1.0
Cdup
Nm (P>50%)
23
Core radius and density
0.9 [pc], 2.1 [pc-2]
- CN 0.0 Sparse
- Cdens 0.43 Loose
- CC3 0.62 Intermediate quality
- Clit 0.06 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
HSC 915 is a sparse, loose object of intermediate C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, very young cluster, but with a large variance across recent sources for the absorption parameter (see Parameters). It was recently reported in the literature.
â ī¸ Warning: the low UTI value and no obvious signs of duplication (Cdup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 348.983 | 69.839 | 0.926 | -2.725 | -2.387 | -16.565 |
| Hunt & Reffert | 2024 | 348.911 | 69.846 | 0.928 | -2.681 | -2.379 | -16.546 |
| Cavallo et al. | 2024 | 349.069 | 69.857 | 0.927 | â | â | â |
| Hunt & Reffert | 2023 | 348.911 | 69.846 | 0.928 | -2.681 | -2.379 | -16.546 |
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 | 1.09 | 2.165 | 1.14 | 8 | -0.120 | 61 | â | â |
| Liu et al. | 2025 | 1.14 | 0.48 | â | 10 | â | â | â | â |
| Hunt & Reffert | 2024 | 1.04 | 2.19 | 1.14 | 8 | â | 61(1) | â | â |
| Cavallo et al. | 2024 | 1.18 | 2.14 | â | 7 | -0.120 | â | â | â |
| Hunt & Reffert | 2023 | 1.04 | 2.19 | 1.14 | 8 | 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 178 along with HSC_925.
Palma et al. (2025)
Part of multiple system G201, along with Berkeley_59 and HSC_925.
Cavallo et al. (2024)
Silver sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.94 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.94 (50th percentile).