Ruprecht 21
Summary
Ruprecht 21 is a sparse, very loose object of low C3 quality. It is located at a large distance from the Sun, well below the mid-plane. It is rarely studied in the literature, with no articles listed in the last 8 years.
Warning: contains less than 25 stars with P>0.5 estimated.
Warning: the low UTI value and no obvious signs of duplication (C_dup=1.0) indicates that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Kharchenko et al. (2012) | 111.735 | -31.155 | – | -3.34 | 2.31 | – |
| Loktin & Popova (2017) | 111.735 | -31.183 | – | -3.832 | 2.148 | – |
| UCC | 111.79 | -31.163 | 0.13 | -0.82 | 2.685 | 89.315 |
Estimated members
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Fundamental parameters
| Reference | Values |
|---|---|
| Kharchenko et al. (2012) | e_bv=0.77, distance=3894, log_age=8.65 |
| Loktin & Popova (2017) | E(B-V)=0.145, Dist=2257, logt=9.34 |
Search coordinates in Bayestar19