HSC 1179
0.06
UTI
0.0
CN
0.07
Cdens
0.12
CC3
0.06
Clit
1.0
Cdup
Nm (P>50%)
20
Core radius and density
1.9 [pc], 0.3 [pc-2]
- CN 0.0 Sparse
- Cdens 0.07 Very loose
- CC3 0.12 Very low 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 1179 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age 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 | 51.222 | 52.29 | 1.677 | -3.637 | -0.278 | -6.796 |
| Yang et al. | 2025 | 53.485 | 51.288 | â | â | â | â |
| Zhang et al. | 2024 | 53.484 | 51.288 | â | â | â | â |
| Cavallo et al. | 2024 | 53.798 | 51.132 | 1.706 | â | â | â |
| Hunt & Reffert | 2023 | 53.484 | 51.288 | 1.704 | -3.621 | -0.305 | -14.211 |
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 | 0.585 | 1.845 | 2.16 | 331 | -0.007 | â | â | â |
| Yang et al. | 2025 | â | â | â | 331 | -0.130(3) | â | â | â |
| Zhang et al. | 2024 | â | â | â | â | -0.007(1) | â | â | â |
| Cavallo et al. | 2024 | 0.61 | 1.95 | â | 69 | 0.020 | â | â | â |
| Hunt & Reffert | 2023 | 0.56 | 1.74 | 2.16 | 335 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as moving group. CMD class: 0.75 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.75 (50th percentile).