OC 0680
0.49
UTI
0.3
CN
1.0
Cdens
1.0
CC3
0.06
Clit
1.0
Cdup
Stellar density (N50/rad)
16.3 [N/pc2]
- CN 0.3 Poorly populated
- Cdens 1.0 Very dense
- CC3 1.0 Very high quality
- Clit 0.06 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 0680 is a poorly populated, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by very high extinction. It is catalogued as a massive, near-solar metallicity, very young cluster, but with a large variance across recent sources for the age and metallicity parameters (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 | 258.982 | -39.05 | 0.386 | -0.376 | -2.435 | 21.647 |
| Hunt & Reffert | 2024 | 258.986 | -39.042 | 0.371 | -0.368 | -2.418 | -7.227 |
| Cavallo et al. | 2024 | 258.971 | -39.025 | 0.37 | â | â | â |
| Hunt & Reffert | 2023 | 258.986 | -39.042 | 0.371 | -0.368 | -2.418 | -7.227 |
| Hao et al. | 2022 | 258.991 | -39.047 | 0.394 | -0.362 | -2.462 | 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 | 2.26 | 5.34 | 2.8 | 19 | 0.029 | 2152 | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 2152(1) | â | â |
| Cavallo et al. | 2024 | 2.11 | 5.34 | â | 19 | -0.140 | â | â | â |
| Hunt & Reffert | 2023 | 2.41 | 5.34 | 2.80 | 11 | â | â | â | â |
| Hao et al. | 2022 | â | 2.94 | â | 6310 | 0.198 | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Palma et al. (2025)
Part of multiple system G168, along with HSC_2874 and HSC_2870.
Cavallo et al. (2024)
Silver sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.13 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.13 (50th percentile).