OC 0673
0.40
UTI
0.25
CN
0.54
Cdens
1.0
CC3
0.1
Clit
1.0
Cdup
Nm (P>50%)
25
Core radius and density
1.1 [pc], 2.7 [pc-2]
- CN 0.25 Poorly populated
- Cdens 0.54 Moderately dense
- CC3 1.0 Very high 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 0673 is a poorly populated, moderately dense object of very high C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by moderate 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 is rarely studied in the literature.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 252.623 | -41.598 | 0.614 | -0.919 | -2.004 | -31.488 |
| Liu et al. | 2025 | 252.62 | -41.6 | 0.61 | -0.91 | -2.01 | -34.28 |
| Hunt & Reffert | 2024 | 252.618 | -41.601 | 0.612 | -0.906 | -2.011 | -34.279 |
| Cavallo et al. | 2024 | 252.642 | -41.602 | 0.612 | â | â | â |
| Hunt & Reffert | 2023 | 252.618 | -41.601 | 0.612 | -0.906 | -2.011 | -34.279 |
| Hao et al. | 2022 | 252.621 | -41.595 | 0.613 | -0.933 | -2.036 | 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 | 1.56 | 1.38 | 0.76 | 7 | 0.263 | 198 | â | â |
| Liu et al. | 2025 | 2.02 | 0.43 | â | 13 | â | â | â | â |
| Hunt & Reffert | 2024 | 1.56 | 1.38 | 0.76 | 7 | â | 198(1) | â | â |
| Cavallo et al. | 2024 | 1.43 | 0.71 | â | 11 | 0.260 | â | â | â |
| Hunt & Reffert | 2023 | 1.56 | 1.38 | 0.76 | 7 | â | â | â | â |
| Hao et al. | 2022 | â | 3.75 | â | 6 | 0.265 | 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 314 along with NGC_6231, and of multiple system 45 along with ESO_332-13, HSC_2849 and NGC_6231.
Palma et al. (2025)
Classified as optical pair P151, along with HSC_2848.
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).