HSC 2769
0.22
UTI
0.28
CN
0.06
Cdens
0.62
CC3
0.06
Clit
1.0
Cdup
Nm (P>50%)
28
Core radius and density
4.0 [pc], 0.3 [pc-2]
- CN 0.28 Poorly populated
- Cdens 0.06 Very loose
- CC3 0.62 Intermediate 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 2769 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a close distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, very 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 | 242.383 | -47.023 | 1.224 | -0.281 | -5.749 | -18.521 |
| Swiggum et al. | 2024 | 242.629 | -47.295 | 1.241 | -0.404 | -5.773 | -19.5 |
| Hunt & Reffert | 2024 | 242.629 | -47.295 | 1.241 | -0.404 | -5.773 | -12.727 |
| Cavallo et al. | 2024 | 242.404 | -46.961 | 1.231 | â | â | â |
| Hunt & Reffert | 2023 | 242.629 | -47.295 | 1.241 | -0.404 | -5.773 | -12.727 |
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 | 0.775 | 1.29 | 1.69 | 19 | 0.230 | 76 | â | â |
| Swiggum et al. | 2024 | 0.78 | â | â | 19 | â | 101 | â | â |
| Hunt & Reffert | 2024 | 0.77 | 1.29 | 1.69 | 19 | â | 52(1) | â | â |
| Cavallo et al. | 2024 | 0.81 | 1.27 | â | 30 | 0.230 | â | â | â |
| Hunt & Reffert | 2023 | 0.77 | 1.29 | 1.69 | 19 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Palma et al. (2025)
Classified as tidal capture (resonant trapping pair) P45, along with HSC_2787.
Cavallo et al. (2024)
Silver sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.53 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.53 (50th percentile).