HSC 983
0.11
UTI
0.0
CN
0.12
Cdens
0.38
CC3
0.03
Clit
1.0
Cdup
Nm (P>50%)
24
Core radius and density
2.1 [pc], 0.6 [pc-2]
- CN 0.0 Sparse
- Cdens 0.12 Very loose
- CC3 0.38 Low quality
- Clit 0.03 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 983 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate 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 | 13.597 | 59.876 | 0.498 | -2.643 | -1.289 | -49.944 |
| Hunt & Reffert | 2024 | 13.59 | 59.863 | 0.498 | -2.628 | -1.285 | -49.962 |
| Cavallo et al. | 2024 | 13.552 | 59.892 | 0.499 | â | â | â |
| Hunt & Reffert | 2023 | 13.59 | 59.863 | 0.498 | -2.628 | -1.285 | -49.962 |
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 | 1.91 | 1.1 | 0.49 | 331 | -0.100 | 89 | â | â |
| Hunt & Reffert | 2024 | 1.91 | 1.10 | 0.49 | 331 | â | 89(1) | â | â |
| Cavallo et al. | 2024 | 1.85 | 1.52 | â | 263 | -0.100 | â | â | â |
| Hunt & Reffert | 2023 | 1.91 | 1.10 | 0.49 | 331 | 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 (not dynamically associated) P115, along with Czernik_2.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.99 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.99 (50th percentile).