20310+0211 J   561

Coord 2000	20310+0211		Discov num	J   561		Comp			Coord arcsec 2000	20 30 55.17 +02 11 13.1
Date first	1909		Date last	2015		Obs	8
Pa first	183		Pa last	176		P.A. Now (θ)	176°
Sep first	4.4		Sep last	4.3		Sep. Now (ρ)	4.3"
Mag pri	12.83		Mag sec	12.83		delta mag (ΔM)	0		Spectral class
Pri motion ra	+003		Sec motion ra	+005
Pri motion dec	-005		Sec motion dec	-011
Notes	B (Blue magnitudes)

Visually invisible, K-band or other infrared star rPM=0.523 Nature of this double is uncertain.

Precise pa

176.1

Precise sep

4.268

Constellation

Aquila

Gaia DR2

49930519168

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20310+0211	J 561		1943	6	184	4.0	12.83	12.83		B	203055.17+021113.1
20310+0211	J 561		2000	7	177	4.4	12.83	12.83		B	203055.17+021113.1
20310+0211	J 561		2015	8	176	4.3	12.83	12.83		B	203055.17+021113.1

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