OC 0279
0.54
UTI
0.26
CN
1.0
Cdens
0.75
CC3
0.35
Clit
1.0
Cdup
Stellar density (N50/rad)
47.6 [N/pc2]
- CN 0.26 Poorly populated
- Cdens 1.0 Very dense
- CC3 0.75 High quality
- Clit 0.35 Poorly 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 0279 is a poorly populated, very dense object of high C3 quality. Its parallax locates it at a very close distance, below the mid-plane, affected by low extinction. It is catalogued as a low-mass, near-solar metallicity, very young cluster, but with a large variance across recent sources for the absorption and metallicity parameters (see Parameters). It is poorly studied in the literature.
Note: This object shares a large percentage of members with a later 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 | 58.53 | 31.915 | 3.503 | 6.203 | -9.607 | 11.888 |
| Liu et al. | 2025 | 58.55 | 31.92 | 3.53 | 6.3 | -9.8 | 11.45 |
| Zhang et al. | 2024 | 58.547 | 31.923 | â | â | â | â |
| Hunt & Reffert | 2024 | 58.547 | 31.923 | 3.527 | 6.3 | -9.797 | 11.448 |
| Cavallo et al. | 2024 | 58.198 | 32.405 | 3.526 | â | â | â |
| Hunt & Reffert | 2023 | 58.547 | 31.923 | 3.527 | 6.3 | -9.797 | 11.448 |
| Hao et al. | 2022 | 58.538 | 31.893 | 3.509 | 6.341 | -9.697 | 14.917 |
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 | 0.905 | 0.76 | 15 | 0.070 | 49 | â | â |
| Liu et al. | 2025 | 0.39 | 0.31 | â | 23 | â | â | â | â |
| Zhang et al. | 2024 | â | â | â | â | -0.029(1) | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 49(1) | â | â |
| Cavallo et al. | 2024 | 0.29 | 1.15 | â | 10 | 0.070 | â | â | â |
| Hunt & Reffert | 2023 | 0.28 | 0.66 | 0.76 | 17 | â | â | â | â |
| Hao et al. | 2022 | â | 4.85 | â | 13 | 0.323 | 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 305 along with NGC_1333, and of multiple system 52 along with HSC_1250 and NGC_1333.
Palma et al. (2025)
Part of multiple system G108, along with NGC_1333 and HSC_1250.
Cavallo et al. (2024)
Gold sample.