HSC 321
0.34
UTI
0.39
CN
0.51
Cdens
0.75
CC3
0.03
Clit
1.0
Cdup
Nm (P>50%)
39
Core radius and density
1.4 [pc], 2.5 [pc-2]
- CN 0.39 Poorly populated
- Cdens 0.51 Moderately dense
- 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 321 is a poorly populated, moderately dense object of high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by very high extinction. It is catalogued as a massive, metal-rich, young cluster (see Parameters). It was recently reported in the literature.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 282.04 | 0.032 | 0.459 | -1.511 | -1.53 | 11.821 |
| Hunt & Reffert | 2024 | 282.044 | 0.043 | 0.433 | -1.53 | -1.525 | -70.651 |
| Cavallo et al. | 2024 | 282.038 | 0.045 | 0.435 | â | â | â |
| Hunt & Reffert | 2023 | 282.044 | 0.043 | 0.433 | -1.53 | -1.525 | -70.651 |
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 | 2.08 | 6.29 | 2.72 | 25 | 0.910 | 1066 | â | â |
| Hunt & Reffert | 2024 | 2.08 | 6.29 | 2.72 | 25 | â | 1066(1) | â | â |
| Cavallo et al. | 2024 | 2.51 | 5.49 | â | 11 | 0.910 | â | â | â |
| Hunt & Reffert | 2023 | 2.08 | 6.29 | 2.72 | 25 | 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 optical pair P156, along with OC_0064.
Cavallo et al. (2024)
Bronze sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.30 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.30 (50th percentile).