20313+4913 S   756 (Ruchba)

 
 
20h 31m 18.82s +49 13' 13.1" P.A. 327 sep 60.7 mag 5.62,10.24 Sp M2IIIab dist. 122.4 pc (399.27 l.y.)
 
 
Coord 2000
20313+4913
Discov num
S   756
Comp
Coord arcsec 2000
20 31 18.82 +49 13 13.1
Date first
1825
Date last
2010
Obs
24
Pa first
319
Pa last
327
P.A. Now (θ)
327°
Sep first
55.8
Sep last
60.7
Sep. Now (ρ)
60.7"
Mag pri
5.62
Mag sec
10.24
delta mag (ΔM)
4.62
Spectral class
M2IIIab (red)
Pri motion ra
+009
Sec motion ra
+031
Pri motion dec
-032
Sec motion dec
+027
Notes
N L (See Notes, Linear solution)
rPM=1.532
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
326.7
Precise sep
60.73
Common name
Ruchba
Meaning
knee
Other names
RUKBAT AL DAJAJAH
Constellation
Cygnus
SAO
49741
HIP
101243
Tycho2
3581-02030-1
Gaia DR2
54016699136
HD
195774
HR
7851
GC
28569
BD
BD+48 3154
Bayer
Omega 2 Cygni
Bayer name
Ome2 Cyg
Flamsteed
46 Cygni
Flamsteed name
46 Cyg
Distance
122.4
Distance ly
399.27
 
 
WDS HISTORIC DATA
 
 
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

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