HSC 995
0.03
UTI
0.0
CN
0.02
Cdens
0.12
CC3
0.0
Clit
1.0
Cdup
Nm (P>50%)
24
Core radius and density
5.5 [pc], 0.1 [pc-2]
- CN 0.0 Sparse
- Cdens 0.02 Very loose
- CC3 0.12 Very low quality
- Clit 0.0 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 995 is a sparse, very loose object of very low 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, intermediate-age 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 | 13.73 | 58.515 | 5.794 | 20.171 | -2.925 | -1.216 |
| Yang et al. | 2025 | 16.405 | 58.503 | â | â | â | â |
| Hunt & Reffert | 2023 | 16.405 | 58.503 | 5.874 | 19.733 | -2.414 | 2.891 |
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 | 0.17 | 0.07 | 0.32 | 108 | 0.050 | â | â | â |
| Yang et al. | 2025 | â | â | â | 107 | 0.050(3) | â | â | â |
| Hunt & Reffert | 2023 | 0.17 | 0.07 | 0.32 | 108 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Palma et al. (2025)
Classified as optical pair P534, along with HSC_958.
Hunt & Reffert (2024)
Classified as moving group. CMD class: 0.98 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.98 (50th percentile).