OC 0630
0.24
UTI
0.26
CN
0.12
Cdens
0.62
CC3
0.1
Clit
1.0
Cdup
Nm (P>50%)
26
Core radius and density
2.1 [pc], 0.6 [pc-2]
- CN 0.26 Poorly populated
- Cdens 0.12 Very loose
- CC3 0.62 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 0630 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the absorption and metallicity parameters (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 | 233.915 | -56.447 | 1.089 | -0.804 | -3.5 | 10.133 |
| Hunt & Reffert | 2024 | 233.918 | -56.455 | 1.081 | -0.821 | -3.481 | 1.412 |
| Cavallo et al. | 2024 | 233.883 | -56.447 | 1.078 | â | â | â |
| Hunt & Reffert | 2023 | 233.918 | -56.455 | 1.081 | -0.821 | -3.481 | 1.412 |
| Hao et al. | 2022 | 233.932 | -56.406 | 1.093 | -0.948 | -3.572 | â |
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 | 0.88 | 1.24 | 0.56 | 69 | -0.149 | 138 | â | â |
| Liu et al. | 2025 | 1.74 | 0.49 | â | 69 | â | â | â | â |
| Hunt & Reffert | 2024 | 0.88 | 1.24 | 0.56 | 74 | â | 138(1) | â | â |
| Cavallo et al. | 2024 | 0.88 | 1.84 | â | 49 | -0.320 | â | â | â |
| Hunt & Reffert | 2023 | 0.88 | 1.24 | 0.56 | 74 | â | â | â | â |
| Hao et al. | 2022 | â | 2.48 | â | 63 | 0.022 | 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 tidal capture (resonant trapping binary) 313 along with UPK_621.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 1.00 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).