HSC 842
0.15
UTI
0.0
CN
0.05
Cdens
0.5
CC3
0.1
Clit
1.0
Cdup
Nm (P>50%)
23
Core radius and density
2.2 [pc], 0.3 [pc-2]
- CN 0.0 Sparse
- Cdens 0.05 Very loose
- CC3 0.5 Intermediate quality
- Clit 0.1 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 842 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a close distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, young 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 | 349.128 | 50.85 | 1.333 | -0.513 | -3.11 | -9.154 |
| Zhang et al. | 2024 | 349.048 | 50.886 | â | â | â | â |
| Swiggum et al. | 2024 | 349.048 | 50.886 | 1.34 | -0.611 | -3.113 | -7.842 |
| Hunt & Reffert | 2024 | 349.048 | 50.886 | 1.34 | -0.611 | -3.113 | -9.775 |
| Cavallo et al. | 2024 | 349.19 | 50.8 | 1.337 | â | â | â |
| Hunt & Reffert | 2023 | 349.048 | 50.886 | 1.34 | -0.611 | -3.113 | -9.775 |
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 | 0.725 | 0.61 | 0.63 | 64 | 0.177 | 83 | â | â |
| Zhang et al. | 2024 | â | â | â | â | -0.126(1) | â | â | â |
| Swiggum et al. | 2024 | 0.73 | â | â | 64 | â | 88 | â | â |
| Hunt & Reffert | 2024 | 0.72 | 0.61 | 0.63 | 64 | â | 78(1) | â | â |
| Cavallo et al. | 2024 | 0.84 | 1.06 | â | 39 | 0.480 | â | â | â |
| Hunt & Reffert | 2023 | 0.72 | 0.60 | 0.63 | 64 | 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 open cluster. CMD class: 0.77 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.77 (50th percentile).