OC 0506
0.19
UTI
0.0
CN
0.26
Cdens
0.5
CC3
0.1
Clit
1.0
Cdup
Nm (P>50%)
23
Core radius and density
1.6 [pc], 1.3 [pc-2]
- CN 0.0 Sparse
- Cdens 0.26 Loose
- CC3 0.5 Intermediate quality
- Clit 0.1 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
OC 0506 is a sparse, loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It is rarely studied 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 | 132.479 | -51.639 | 0.389 | -6.841 | 5.804 | 32.435 |
| Hu & Soubiran | 2025 | 132.436 | -51.572 | â | â | â | â |
| Hunt & Reffert | 2024 | 132.472 | -51.643 | 0.389 | -6.808 | 5.778 | 32.291 |
| Cavallo et al. | 2024 | 132.436 | -51.572 | 0.392 | â | â | â |
| Hunt & Reffert | 2023 | 132.472 | -51.643 | 0.389 | -6.808 | 5.778 | 32.291 |
| Hao et al. | 2022 | 132.492 | -51.629 | 0.391 | -6.852 | 5.794 | 33.854 |
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 | 2.32 | 2.115 | 1.8 | 625 | 0.022 | 159 | â | â |
| Hu & Soubiran | 2025 | â | â | â | â | -0.270(5) | â | â | â |
| Hunt & Reffert | 2024 | 2.32 | 2.02 | 1.80 | 661 | â | 159(1) | â | â |
| Cavallo et al. | 2024 | 2.38 | 2.21 | â | 589 | 0.170 | â | â | â |
| Hunt & Reffert | 2023 | 2.32 | 2.02 | 1.80 | 661 | â | â | â | â |
| Hao et al. | 2022 | â | 3.68 | â | 398 | 0.022 | 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 class: 0.41 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.41 (50th percentile).