20313+4913 S   756 (Ruchba)

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)

Visually invisible, K-band or other infrared star rPM=1.532 This double is not physical.

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

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

If you need more information about this double, apply for a data request form to the WDS.