ZHBJZ 1
0.00
UTI
0.8
CN
1.0
Cdens
1.0
CC3
0.3
Clit
0.0
Cdup
Stellar density (N50/rad)
15.5 [N/pc2]
- CN 0.8 Rich
- Cdens 1.0 Very dense
- CC3 1.0 Very high quality
- Clit 0.3 Poorly studied
- Cdup 0.0 Very likely duplicate
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
ZHBJZ 1 is a rich, very dense object of very high C3 quality. Its parallax locates it at a very close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, very young cluster, but with a large variance across recent sources for the absorption parameter (see Parameters). It was recently reported in the literature.
â ī¸ Warning: This is very likely a duplicate object, which shares a large 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 | 103.737 | -5.895 | 3.487 | -7.414 | -2.435 | 20.511 |
| Liu et al. | 2025 | 103.95 | -5.79 | 3.49 | -7.32 | -2.44 | 18.36 |
| Zhang et al. | 2024 | 103.947 | -5.791 | â | â | â | â |
| Hunt & Reffert | 2024 | 103.947 | -5.791 | 3.491 | -7.318 | -2.445 | 18.357 |
| Cavallo et al. | 2024 | 103.471 | -5.827 | 3.505 | â | â | â |
| Hunt & Reffert | 2023 | 103.947 | -5.791 | 3.491 | -7.318 | -2.445 | 18.357 |
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 | 0.29 | 0.18 | 0.62 | 13 | -0.176 | 165 | â | â |
| Liu et al. | 2025 | 0.24 | 0.01 | â | 48 | â | â | â | â |
| Zhang et al. | 2024 | â | â | â | â | -0.072(1) | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 165(1) | â | â |
| Cavallo et al. | 2024 | 0.29 | 0.66 | â | 10 | -0.280 | â | â | â |
| Hunt & Reffert | 2023 | 0.29 | 0.18 | 0.62 | 13 | 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 348 along with Theia_72, and as tidal capture (resonant trapping binary) 351 along with Theia_379, and of multiple system 80 along with Theia_72 and Theia_379.
Palma et al. (2025)
Part of multiple system G248, along with Theia_379 and Theia_72.
Cavallo et al. (2024)
Gold sample.