HSC 903
0.09
UTI
0.0
CN
0.19
Cdens
0.25
CC3
0.0
Clit
1.0
Cdup
Stellar density (N50/rad)
1.0 [N/pc2]
- CN 0.0 Sparse
- Cdens 0.19 Very loose
- CC3 0.25 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 903 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate distance, above 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 | 351.701 | 62.075 | 0.329 | -3.701 | -1.871 | -60.255 |
| Hunt & Reffert | 2024 | 351.738 | 62.07 | 0.324 | -3.694 | -1.893 | â |
| Cavallo et al. | 2024 | 351.687 | 62.074 | 0.326 | â | â | â |
| Hunt & Reffert | 2023 | 351.738 | 62.07 | 0.324 | -3.694 | -1.893 | â |
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 | 2.57 | 2.94 | 1.65 | 48 | 0.210 | 239 | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 239(1) | â | â |
| Cavallo et al. | 2024 | 2.30 | 2.86 | â | 21 | 0.210 | â | â | â |
| Hunt & Reffert | 2023 | 2.84 | 3.02 | 1.65 | 74 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Palma et al. (2025)
Part of multiple system G200, along with HSC_907 and UBC_1185.
Cavallo et al. (2024)
Gold sample.