HSC 689
0.11
UTI
0.0
CN
0.28
Cdens
0.25
CC3
0.0
Clit
1.0
Cdup
Stellar density (N50/rad)
1.4 [N/pc2]
- CN 0.0 Sparse
- Cdens 0.28 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 689 is a sparse, loose object of low C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by low 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 | 321.469 | 42.515 | 1.584 | 2.62 | -0.827 | -19.204 |
| Zhang et al. | 2024 | 321.57 | 42.483 | â | â | â | â |
| Cavallo et al. | 2024 | 321.554 | 42.541 | 1.583 | â | â | â |
| Hunt & Reffert | 2023 | 321.57 | 42.483 | 1.584 | 2.575 | -0.978 | -33.117 |
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 | 0.615 | 0.245 | 0.44 | 76 | 0.098 | â | â | â |
| Zhang et al. | 2024 | â | â | â | â | 0.025(1) | â | â | â |
| Cavallo et al. | 2024 | 0.62 | 0.33 | â | 91 | 0.170 | â | â | â |
| Hunt & Reffert | 2023 | 0.61 | 0.16 | 0.44 | 61 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as a moving group.