HSC 1551
0.16
UTI
0.0
CN
0.22
Cdens
0.62
CC3
0.25
Clit
0.6
Cdup
Stellar density (N50/rad)
1.1 [N/pc2]
- CN 0.0 Sparse
- Cdens 0.22 Very loose
- CC3 0.62 Intermediate quality
- Clit 0.25 Poorly studied
- Cdup 0.6 Likely 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 1551 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, very young cluster (see Parameters). It was recently reported in the literature.
Note: This is likely a unique object, which shares a moderate percentage of members with at least one previously reported entry. See table with shared members information.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 92.852 | 13.986 | 1.055 | -1.752 | -1.375 | 19.186 |
| Liu et al. | 2025 | 93.0 | 14.07 | 1.04 | -1.77 | -1.38 | 19.35 |
| Zhang et al. | 2024 | 92.996 | 14.073 | â | â | â | â |
| Cavallo et al. | 2024 | 92.735 | 13.763 | 1.044 | â | â | â |
| Hunt & Reffert | 2023 | 92.996 | 14.073 | 1.045 | -1.767 | -1.384 | 19.348 |
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 | 1.05 | 0.76 | 1.0 | 9 | -0.103 | â | â | â |
| Liu et al. | 2025 | 1.30 | 0.29 | â | 14 | â | â | â | â |
| Zhang et al. | 2024 | â | â | â | â | -0.157(1) | â | â | â |
| Cavallo et al. | 2024 | 1.05 | 0.93 | â | 8 | -0.050 | â | â | â |
| Hunt & Reffert | 2023 | 0.91 | 0.76 | 1.00 | 9 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Liu et al. (2025)
Classified as primordial binary cluster 197 along with NGC_2169, and as primordial binary cluster 199 along with HSC_1561, and of multiple system 54 along with HSC_1561 and NGC_2169.
Palma et al. (2025)
Part of multiple system G120, along with NGC_2169 and HSC_1561.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as a moving group.