HSC 1674
0.18
UTI
0.0
CN
0.15
Cdens
0.62
CC3
0.06
Clit
1.0
Cdup
Nm (P>50%)
22
Core radius and density
1.6 [pc], 0.7 [pc-2]
- CN 0.0 Sparse
- Cdens 0.15 Very 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 1674 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity 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 | 106.133 | 2.609 | 0.771 | -1.212 | -4.267 | 19.304 |
| Zhang et al. | 2024 | 106.07 | 2.611 | â | â | â | â |
| Hunt & Reffert | 2024 | 106.07 | 2.611 | 0.756 | -1.216 | -4.269 | 22.04 |
| Cavallo et al. | 2024 | 106.121 | 2.624 | 0.756 | â | â | â |
| Hunt & Reffert | 2023 | 106.07 | 2.611 | 0.756 | -1.216 | -4.269 | 22.04 |
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 | 1.28 | 0.77 | 0.6 | 176 | 0.132 | 63 | â | â |
| Zhang et al. | 2024 | â | â | â | â | -0.097(1) | â | â | â |
| Hunt & Reffert | 2024 | 1.28 | 0.77 | 0.60 | 176 | â | 63(1) | â | â |
| Cavallo et al. | 2024 | 1.43 | 0.90 | â | 126 | 0.360 | â | â | â |
| Hunt & Reffert | 2023 | 1.28 | 0.77 | 0.60 | 177 | 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 P133, along with HSC_1672.
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).