HSC 1740
0.03
UTI
0.26
CN
1.0
Cdens
0.62
CC3
0.0
Clit
0.08
Cdup
Stellar density (N50/rad)
33.5 [N/pc2]
- CN 0.26 Poorly populated
- Cdens 1.0 Very dense
- CC3 0.62 Intermediate quality
- Clit 0.0 Rarely studied
- Cdup 0.08 Very likely duplicate
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 1740 is a poorly populated, very dense 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, 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: This is very likely a duplicate object, which shares a large percentage of members with at least one previously reported entry. See table with shared members information.
(*): The parallax distance estimate (~1.32 kpc) differs significantly from the median photometric distance (~2.41 kpc).
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 104.922 | -7.793 | 0.759 | -2.415 | 1.096 | 4.347 |
| Hunt & Reffert | 2024 | 104.923 | -7.801 | 0.759 | -2.419 | 1.137 | 25.987 |
| Cavallo et al. | 2024 | 104.888 | -7.809 | 0.762 | â | â | â |
| Hunt & Reffert | 2023 | 104.923 | -7.801 | 0.759 | -2.419 | 1.137 | 25.987 |
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 | 2.41 | 1.565 | 1.52 | 158 | -0.040 | 132 | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 132(1) | â | â |
| Cavallo et al. | 2024 | 3.56 | 1.43 | â | 309 | -0.040 | â | â | â |
| Hunt & Reffert | 2023 | 1.26 | 1.70 | 1.52 | 8 | 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 genetic pair P187, along with BDSB_93.
Cavallo et al. (2024)
Wood sample.