HSC 2921
0.09
UTI
0.0
CN
0.22
Cdens
0.25
CC3
0.0
Clit
1.0
Cdup
Stellar density (N50/rad)
1.1 [N/pc2]
- CN 0.0 Sparse
- Cdens 0.22 Very loose
- CC3 0.25 Low quality
- Clit 0.0 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 2921 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high extinction. It is catalogued as a near-solar metallicity, young cluster (see Parameters). It was recently reported in the literature.
Note: This object shares a small percentage of members with a later reported entry. See table with shared members information.
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 | 263.435 | -35.012 | 0.385 | -0.631 | -2.082 | 118.215 |
| Hunt & Reffert | 2024 | 263.43 | -35.02 | 0.392 | -0.657 | -2.102 | -49.409 |
| Cavallo et al. | 2024 | 263.448 | -35.051 | 0.392 | â | â | â |
| Hunt & Reffert | 2023 | 263.43 | -35.02 | 0.392 | -0.657 | -2.102 | -49.409 |
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 | 2.015 | 3.675 | 2.48 | 46 | -0.090 | 824 | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 824(1) | â | â |
| Cavallo et al. | 2024 | 1.74 | 3.71 | â | 58 | -0.090 | â | â | â |
| Hunt & Reffert | 2023 | 2.29 | 3.64 | 2.48 | 33 | 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 G170, along with Ruprecht_127, HSC_2912, CWNU_50 and UBC_564.
Cavallo et al. (2024)
Silver sample.