OC 0644
0.00
UTI
0.25
CN
1.0
Cdens
0.5
CC3
0.25
Clit
0.0
Cdup
Radius (P>50% members)
1.7 [arcmin]
- CN 0.25 Poorly populated
- Cdens 1.0 Very dense
- CC3 0.5 Intermediate quality
- Clit 0.25 Poorly studied
- Cdup 0.0 Very likely duplicate
Overview
OC 0644 is a poorly populated, very dense object of intermediate C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high extinction. It is catalogued as a massive, near-solar metallicity, young cluster (see Parameters). It is poorly studied in the literature.
â ī¸ Warning: This is very likely a duplicate object, which shares a large percentage of members with at least one previously reported entry. See table with shared members information.
Relatively close
High extinction
Massive
Near-solar metallicity
Young
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 241.557 | -52.136 | 0.373 | -2.863 | -4.82 | -36.026 |
| Hunt & Reffert | 2024 | 241.566 | -52.134 | 0.372 | -2.864 | -4.801 | -5.408 |
| Cavallo et al. | 2024 | 241.578 | -52.14 | 0.373 | â | â | â |
| Hunt & Reffert | 2023 | 241.566 | -52.134 | 0.372 | -2.864 | -4.801 | -5.408 |
| Hao et al. | 2022 | 241.562 | -52.132 | 0.41 | -2.916 | -4.807 | 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] | Bfr | BSS |
|---|---|---|---|---|---|---|---|---|---|
| Hunt & Reffert | 2024 | â | â | â | â | â | 1523* | â | â |
| Cavallo et al. | 2024 | 2.45 | 3.77 | â | 148 | 0.500 | â | â | â |
| Hunt & Reffert | 2023 | 2.46 | 3.82 | 2.62 | 98 | â | â | â | â |
| Hao et al. | 2022 | â | 0.00 | â | 63 | 0.370 | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.