HSC 2654
0.14
UTI
0.0
CN
0.19
Cdens
0.38
CC3
0.06
Clit
1.0
Cdup
Nm (P>50%)
23
Core radius and density
1.6 [pc], 0.9 [pc-2]
- CN 0.0 Sparse
- Cdens 0.19 Very loose
- CC3 0.38 Low quality
- Clit 0.06 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 2654 is a sparse, very loose object of low C3 quality. Its parallax locates it at a relatively close distance, below 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: 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 | 222.339 | -65.376 | 0.605 | -7.778 | -3.608 | -33.478 |
| Hu & Soubiran | 2025 | 222.246 | -65.424 | â | â | â | â |
| Hunt & Reffert | 2024 | 222.419 | -65.356 | 0.596 | -7.771 | -3.628 | -32.786 |
| Cavallo et al. | 2024 | 222.246 | -65.424 | 0.595 | â | â | â |
| Hunt & Reffert | 2023 | 222.419 | -65.356 | 0.596 | -7.771 | -3.628 | -32.786 |
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 | 1.7 | 2.47 | 1.6 | 310 | 0.215 | 137 | â | â |
| Hu & Soubiran | 2025 | â | â | â | â | 0.100(5) | â | â | â |
| Hunt & Reffert | 2024 | 1.70 | 2.47 | 1.60 | 310 | â | 137(1) | â | â |
| Cavallo et al. | 2024 | 1.42 | 2.05 | â | 1288 | 0.330 | â | â | â |
| Hunt & Reffert | 2023 | 1.70 | 2.47 | 1.60 | 310 | 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: 0.03 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.03 (50th percentile).