OC 0321
0.21
UTI
0.0
CN
0.22
Cdens
0.62
CC3
0.1
Clit
1.0
Cdup
Nm (P>50%)
23
Core radius and density
1.3 [pc], 1.1 [pc-2]
- CN 0.0 Sparse
- Cdens 0.22 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 0321 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age 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 | 95.542 | 18.995 | 0.514 | -0.731 | 0.298 | â |
| Zhang et al. | 2024 | 95.545 | 19.004 | â | â | â | â |
| Hunt & Reffert | 2024 | 95.545 | 19.004 | 0.504 | -0.709 | 0.285 | â |
| Cavallo et al. | 2024 | 95.511 | 18.998 | 0.504 | â | â | â |
| Hunt & Reffert | 2023 | 95.545 | 19.004 | 0.504 | -0.709 | 0.285 | â |
| Hao et al. | 2022 | 95.555 | 18.989 | 0.543 | -0.75 | 0.269 | 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 | 1.85 | 0.71 | 0.52 | 179 | -0.030 | 164 | â | â |
| Zhang et al. | 2024 | â | â | â | â | -0.213(1) | â | â | â |
| Hunt & Reffert | 2024 | 1.85 | 0.71 | 0.52 | 179 | â | 164(1) | â | â |
| Cavallo et al. | 2024 | 1.90 | 0.70 | â | 339 | -0.030 | â | â | â |
| Hunt & Reffert | 2023 | 1.85 | 0.71 | 0.52 | 179 | â | â | â | â |
| Hao et al. | 2022 | â | 1.95 | â | 40 | 0.140 | 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 classes: 1.00 (50th percentile), true positive (human-assigned).
Hunt & Reffert (2023)
Classified as open cluster. CMD classes: 1.00 (50th percentile), true positive (human-assigned).