HSC 2655
0.22
UTI
0.0
CN
0.3
Cdens
0.75
CC3
0.03
Clit
1.0
Cdup
Nm (P>50%)
22
Core radius and density
1.3 [pc], 1.5 [pc-2]
- CN 0.0 Sparse
- Cdens 0.3 Loose
- CC3 0.75 High quality
- Clit 0.03 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 2655 is a sparse, loose object of high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young 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 | 217.637 | -60.278 | 0.442 | -5.676 | -2.925 | â |
| Hunt & Reffert | 2024 | 217.643 | -60.29 | 0.434 | -5.676 | -2.93 | â |
| Cavallo et al. | 2024 | 217.646 | -60.278 | 0.438 | â | â | â |
| Hunt & Reffert | 2023 | 217.643 | -60.29 | 0.434 | -5.676 | -2.93 | 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 | 2.1 | 2.11 | 2.06 | 55 | 0.220 | 451 | â | â |
| Hunt & Reffert | 2024 | 2.11 | 2.11 | 2.06 | 55 | â | 451(1) | â | â |
| Cavallo et al. | 2024 | 1.87 | 1.90 | â | 398 | 0.220 | â | â | â |
| Hunt & Reffert | 2023 | 2.10 | 2.11 | 2.06 | 55 | 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 G218, along with UBC_1527 and NGC_5617.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.85 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.85 (50th percentile).