HSC 2280
0.14
UTI
0.0
CN
0.21
Cdens
0.5
CC3
0.0
Clit
1.0
Cdup
Nm (P>50%)
23
Core radius and density
1.2 [pc], 1.0 [pc-2]
- CN 0.0 Sparse
- Cdens 0.21 Very loose
- CC3 0.5 Intermediate 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 2280 is a sparse, very loose object of intermediate 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, intermediate-age 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 | 148.943 | -56.226 | 1.741 | -18.525 | 11.19 | 3.983 |
| Cavallo et al. | 2024 | 149.117 | -56.278 | 1.759 | â | â | â |
| Hunt & Reffert | 2023 | 148.78 | -56.261 | 1.764 | -18.591 | 11.229 | 4.488 |
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 | 0.555 | 0.41 | 0.48 | 160 | 0.180 | â | â | â |
| Cavallo et al. | 2024 | 0.57 | 0.56 | â | 182 | 0.180 | â | â | â |
| Hunt & Reffert | 2023 | 0.54 | 0.26 | 0.48 | 139 | â | â | â | â |
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as moving group. CMD class: 0.95 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.95 (50th percentile).