HSC 455
0.15
UTI
0.26
CN
0.1
Cdens
0.25
CC3
0.06
Clit
1.0
Cdup
Nm (P>50%)
26
Core radius and density
2.4 [pc], 0.5 [pc-2]
- CN 0.26 Poorly populated
- Cdens 0.1 Very loose
- CC3 0.25 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 455 is a poorly populated, very loose object of low 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, 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 | 287.124 | 23.378 | 1.062 | 0.287 | -0.517 | -10.402 |
| Zhang et al. | 2024 | 287.108 | 23.385 | â | â | â | â |
| Hunt & Reffert | 2024 | 287.108 | 23.385 | 1.068 | 0.319 | -0.511 | -6.078 |
| Cavallo et al. | 2024 | 287.232 | 23.318 | 1.062 | â | â | â |
| Hunt & Reffert | 2023 | 287.108 | 23.385 | 1.068 | 0.319 | -0.511 | -6.078 |
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 | 0.89 | 1.51 | 0.38 | 97 | -0.002 | 62 | â | â |
| Zhang et al. | 2024 | â | â | â | â | -0.063(1) | â | â | â |
| Hunt & Reffert | 2024 | 0.89 | 1.51 | 0.38 | 97 | â | 62(1) | â | â |
| Cavallo et al. | 2024 | 0.96 | 1.76 | â | 316 | 0.060 | â | â | â |
| Hunt & Reffert | 2023 | 0.89 | 1.51 | 0.38 | 97 | 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 classes: 0.90 (50th percentile), true positive (human-assigned).
Hunt & Reffert (2023)
Classified as open cluster. CMD classes: 0.90 (50th percentile), true positive (human-assigned).