HSC 1308
0.15
UTI
0.0
CN
0.08
Cdens
0.5
CC3
0.1
Clit
1.0
Cdup
Nm (P>50%)
22
Core radius and density
2.8 [pc], 0.4 [pc-2]
- CN 0.0 Sparse
- Cdens 0.08 Very loose
- CC3 0.5 Intermediate quality
- Clit 0.1 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 1308 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster (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 | 76.327 | 38.466 | 0.94 | -0.385 | -3.113 | -16.527 |
| Liu et al. | 2025 | 76.51 | 38.47 | 0.95 | -0.36 | -3.13 | -16.74 |
| Zhang et al. | 2024 | 76.513 | 38.47 | â | â | â | â |
| Hunt & Reffert | 2024 | 76.513 | 38.47 | 0.952 | -0.36 | -3.133 | -16.738 |
| Cavallo et al. | 2024 | 76.193 | 38.302 | 0.95 | â | â | â |
| Hunt & Reffert | 2023 | 76.513 | 38.47 | 0.952 | -0.36 | -3.133 | -16.738 |
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 | 1.035 | 1.32 | 1.25 | 44 | 0.081 | 81 | â | â |
| Liu et al. | 2025 | 1.91 | 0.55 | â | 32 | â | â | â | â |
| Zhang et al. | 2024 | â | â | â | â | -0.019(1) | â | â | â |
| Hunt & Reffert | 2024 | 0.98 | 1.32 | 1.25 | 55 | â | 81(1) | â | â |
| Cavallo et al. | 2024 | 1.09 | 1.62 | â | 19 | 0.180 | â | â | â |
| Hunt & Reffert | 2023 | 0.98 | 1.32 | 1.25 | 55 | 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 190 along with HXHWL_18, and of multiple system 2 along with COIN-Gaia_10, COIN-Gaia_39, HXHWL_18 and ASCC_12.
Palma et al. (2025)
Part of multiple system G110, along with COIN-Gaia_39, ASCC_12 and HXHWL_18.
Cavallo et al. (2024)
Gold 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).