| Coord 2000 | 20313+4913 |
Discov num | S 756 |
Comp | Coord arcsec 2000 | 20 31 18.82 +49 13 13.1 |
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| Date first | 1825 |
Date last | 2010 |
Obs | 24 |
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| Pa first | 319 |
Pa last | 327 |
P.A. Now (θ) | 327° |
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| Sep first | 55.8 |
Sep last | 60.7 |
Sep. Now (ρ) | 60.7" |
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| Mag pri | 5.62 |
Mag sec | 10.24 |
delta mag (ΔM) | 4.62 |
Spectral class | M2IIIab (red) |
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| Pri motion ra | +009 |
Sec motion ra | +031 |
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| Pri motion dec | -032 |
Sec motion dec | +027 |
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| Notes | |||||||||||
| Precise pa | 326.7 |
Precise sep | 60.73 |
Common name | Ruchba |
Meaning | knee |
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| Other names | RUKBAT AL DAJAJAH |
Constellation | Cygnus |
SAO | 49741 |
HIP | 101243 |
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| Tycho2 | 3581-02030-1 |
Gaia DR2 | 54016699136 |
HD | 195774 |
HR | 7851 |
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| GC | 28569 |
BD | BD+48 3154 |
Bayer | Omega 2 Cygni |
Bayer name | Ome2 Cyg |
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| Flamsteed | 46 Cygni |
Flamsteed name | 46 Cyg |
Distance | 122.4 |
Distance ly | 399.27 |
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 20313+4913 | S 756 | 2006 | 22 | 327 | 60.2 | 5.62 | 10.24 | M2IIIab | NLD | 203118.82+491313.1 | |
| 20313+4913 | S 756 | 2010 | 23 | 327 | 60.7 | 5.62 | 10.24 | M2IIIab | NLD | 203118.82+491313.1 |