Ryu 661
0.11
UTI
0.0
CN
0.04
Cdens
0.5
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
2.7 [arcmin]
- CN 0.0 Sparse
- Cdens 0.04 Very loose
- CC3 0.5 Intermediate quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
Ryu 661 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a very large distance, well below the mid-plane. No fundamental parameter values are available for this object. It is rarely studied in the literature, with no articles listed in the last 7 years.
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.
No fundamental parameters
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 276.398 | -21.533 | 0.084 | -3.473 | -6.505 | 25.686 |
| Bica et al. | 2019 | 276.426 | -21.514 | â | â | â | â |
đĄ Note: The UCC values are estimated from its identified members.
